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6/16/22 8:04 GMT
Fire Resistant SK34 Clay Refractory Brick 40MPA Yellow Color
Physical and chemical indexes: Item Unit Index Bulk density g/cm2 2.31-2.4 Water absorption % <0.5 Acid resistance % 99.8 Flexural strength Mpa 42 Crushing stength Mpa 120 Thermal stability 130°c-20°c No crackle after 3 times Chemical composition (%) SiO2 Al2O3 K2O Na2O CaO MgO Fe2O3 69.8 22.5 2.7 0.95 0.82 0.82 0.49 High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove is comparable to that of silica bricks, up to 1690~1730℃, but the softening temperature under load is more than 200℃ lower than that of silica bricks. In addition to the high refractory mullite crystals,High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove also contain nearly half of the low melting point amorphous glass phase. In the temperature range of 0~1000℃, the volume of High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove expands uniformly as the temperature rises. The linear expansion curve is approximately a straight line, and the linear expansion rate is 0.6%~0.7%, which is only about half of that of silica bricks. When the temperature reaches 1200 ℃ and then continue to rise, its volume will start to shrink from the maximum expansion. The residual shrinkage of High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove leads to the loosening of mortar joints in masonry, which is a major disadvantage of clay bricks. When the temperature exceeds 1200°C, the low melting point substances in the High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove gradually melt, and the particles are tightly pressed against each other due to surface tension, resulting in volume shrinkage. Production practice in China has proved that before crushing, high-aluminum clinker is strictly sorted and classified, and stored in tiers. The use of bauxite clinker and combined clay fin grinding method can improve product quality. Contact:
Phone: Fax: Email: Zhengzhou Annec Industrial Co., Ltd.
Industrial Cluster Area of Xinmi City, Henan Province,China. Xinmi 452300 China 6/16/22 7:02 GMT
20mm 35mm Custom Laser Cut Parts Galvanizing Sheet Metal Stamping Prototype
Our Laser Cutting Metal Services Our team of CNC metal laser cutting experts produces custom parts, complex shapes and detailed cuts of sheet metal. The metals we use range from rare metals like copper and brass to more common metals Our laser cutting systems utilize state-of-the-art metal cutting technology. Our metal laser cutting systems combine speed and accuracy to quickly create custom designs. That's why we rely on the manufacture of custom industrial parts and components - from small gears to industrial equipment When it comes to getting your laser cut metal projects right, we ensure quality and accuracy by: Comprehensive pre-production consulting, analysis and data review Direct communication between customers and laser technicians Strict quality assurance process Output "on target" guarantee for final metal product Contact:
Phone: Fax: Email: Guangzhou Yigang Steel Trading Co., Ltd.
A10 Xintang Steel Market, Xintang Town, Zengcheng District, Guangzhou Guangzhou 510000 China 6/15/22 10:53 GMT
DELLOK Solid Extruded Serrated Alu1050 Heat Exchanger Fin Tube Thick 0.4mm
Solid Extruded Serrated Alu1050 Heat Exchanger Fin Tube Thick 0.4mm Serrated Extruded Heat Exchanger aluminum Fin Tube , A179 seamless Carbon Steel tubes Manufacturing Process A smooth core tube is inserted into an aluminum sleeve and then the fins are extruded out of the aluminum sleeve. The fins are solid plain or serrated into 12,16 or 24 segments or as your design. Both plain ends with appr. 10mm~50mm and gaps (Unfinned Section) in the middle. Both bare ends of Bimetallic Finned Tubes shall be Zinc or Aluminum that metallized applied by an electro spray arc system coating on surface, it suits to various areas such as Heat exchangers units for power plant(electric, nuclear, thermal and geothermal power plants); High corrosive systems (condensers, evaporators, sea water desalinations, fertilizing, urea systems, ammonia, gas, corrosive acids); The petroleum, chemical and petrochemical industries; The food processing and refrigeration industries; Natural gas treatment; General specifications of Extruded Fin Tubes Tube OD : 50.8mm(2'') max. Tube Length : No limit Fin Height : 16 mm max. Fin Thickness: appr. 0.4mm Fin Pitch : 1.5mm min. General extrusion production capacity Extrusion Facility: 10 finning machines. Daily capacity up to 15,000 meters. Extruded fins type: solid and serrated Accessories Tube Support Box, Clamp or Spacer Box(Materials: Aluminum, Zinc or Stainless Steel). Specifications: Extruded Bimetallic Finned Tube is combined with two different materials. Items General Materials Popular ASTM Materials Core Tube Material Any metallic materials, as carbon steel, low-alloy steel, stainless steel, brass, copper, cooper-nickel alloys, aluminum bronze, nickel alloys etc. (Core tube with extremely thin wall materials can be applied.) 1. Carbon Steel: A179, A192,SA210 Gr A1/C,A106 Gr B 2. Stainless Steel: TP304/304L,TP316/TP316L/316Ti, A789 S31803/S2205 etc... 3. Copper:UNS12200/UNS14200/UNS70600, CuNi70/30,Cu , Ni 90/10 4. Titanium: B338 Gr 2 Fins Material 1. Aluminum 2. Copper. 1. Aluminum(Alu.1100,Alu.1060,Alu.6063) 2. Copper. Contact:
Phone: Fax: Email: DELLOK TECHNOLOGY CO.,LTD
No.20 Xinghuo Road,Nanjing,Jiangsu,China Nanjing 210000 China 6/15/22 10:17 GMT
3030 60kn Biaxial Plastic Geogrid For Civil Engineering Construction
Feature: 1) High tensile strength at both longitudinal and transverse direction 2) Improving bearing capacity of foundation 3) Preventing cracking and subsiding 4) Convenient to construct, reducing cost and maintaining expense Tensile strength(MD/CD) Item TGSG 15-15 TGSG 20-20 TGSG 25-25 TGSG 30-30 TGSG 40-40 TGSG 45-45 TGSG 50-50 Vertical Tensile Strength (KN/m) ≥ 15 20 25 30 40 45 50 H , orizontal Tensile Strength (KN/m) 15 20 25 30 40 45 50 cVertical elongation ration (%) ≤ 13 Horizontal elongation ration (%) ≤ 13 Vertical stretching force at 2% elongation(KN/m) ≥ 5 7 9 10 14 16 17.5 Ho , rizontal stretching force at 2% elongation(KN/m) ≥ 5 7 9 18 14 16 17.5 Ve , rtical stretching force at 5% elongation(KN/m) ≥ 7 14 17 21 28 32 35 Ho , rizontal stretching force at 2% elongation(KN/m) ≥ 7 14 17 21 28 32 35 Le , ngth (m) 50 Width (m) 1-6m Contact:
Phone: Fax: Email: Anping County Hengquan Metal Wire Mesh Products Co.,Ltd
North 1000 meters, Taicheng village, East Huangcheng town Anping County, Hengshui City, Hebei Province, China Hengshui 053000 China 6/15/22 7:24 GMT
T3CA T57 T53 T61 TH415 TH550 Electrolytic Tinplate For Can Components TINPL
Tinplate T3CA T57 T53 T61 TH415 TH880 Electrolytic tinplate for Can Components Electrolytic Tin Plate English Abbreviations: SPTE . It refers to cold rolled low carbon thin steel plate or steel strip coated with commercial pure tin on both sides. Applications of Tinplate and TFS ETP is primarily used for packaging foodstuffs and beverages, but it is also used in containers for oils, grease, paints, polishes, chemicals and many other products. Aerosol containers and caps and closures are also made from ETP. TFS are most frequently used for can tops, screw and lug caps, snap and press- on closures and shallow-drawn food cans. Tinplate Components Paramenters PRODUCT Prime tinplate STANDARD BS EN 10202, DIN EN 10203, GB/T2520 , JIS G3303 MATERIAL MR SPCC Grade Prime Annealing BA,CA THICKNESS 0.18-0.45mm WIDTH 600-1050mm TEMPER T2, T2.5, T3, T3.5, T4,T5 ,DR7,DR7M,DR8 COATING: 2.8g/2.8g, 5.6g/5.6g, 2.8/5.6,2.0/2.0 gr/m² or according to customer's requirement FINISHS: . Bright,Silver,Stone, Matte PACKINGS: export packing. Or according to customer's requirements. MOQ 25 tons DELIVERY 15-30 days after payment Contact:
Phone: Fax: Email: SHANGHAI QUANYE METAL PACKAGING MATERIALS CO.,LTD
NO 406 CHUNHE ROAD YUEPU TOWN, BAOSHAN DISTRICT, SHANGHAI CHINA 200941 Shanghai 201100 China 6/15/22 3:41 GMT
ASTM 304 Stainless Round Bar , Polished Stainless Flat Bar ISO SGS Certific
Polishing 304 Stainless Steel Bar/Rod 304L cheap price polished SUS304 316 303 300 Series Stainless Steel Round Bar/Rod/Shaft Stainless steel is an alloy of Iron with a minimum of 10.5% Chromium. Chromium produces a thin layer of oxide on the surface of the steel known as the 'passive layer'. This prevents any further corrosion of the surface. Increasing the amount of Chromium gives an increased resistance to corrosion. Surface Surface finish Characteristics and application 2B The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties,No2B could nearly satisfy comprehensive uses. No.1 Polished with abrasive belt of grit#100-#200, have better brightness with discontinuous coarse stria, used as inner and external ornaments for building, electrical appliances and kitchen utensils etc. No.4 Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria, but thinner than No3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment etc. HL Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous streaks, mainly used as buildings ornaments elevators, door of building, frontal plate etc. BA Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror, kitchen apparatus, ornament etc. 8K The product have excellent brightness and prefer reflexivity can to be the mirror. Contact:
Phone: Fax: Email: Jiangsu Huyi Metal Material Co., LTD
Room 104, Building A, No. 7 Tangnongshi Road, Northeast of Xishan District, Wuxi City Wuxi 214000 China 6/14/22 7:59 GMT
Optical Glass 1.2 Micron Rare Earth Polishing Powder
Gona is a manufacture of high-performance cerium oxide and rare earth oxide materials designed to deliver excellent polishing performance for many various glass polishing applications including precision optical lenses, flat glass/mirror,LCD,and blue filter glass. 【Application】 It is suitable for optical spherical glass with abrasion 80-120, flat glass polishing, such as K9 glass. 【Specification】 1. Chemical properties: TREO>94%, CeO2/TREO= 60-70%,La2O3/TREO=20-30% 2. Color:Red brown 3.PSD: D50=1.0-1.4um,D99<6um ITEM INDEX ITEM INDEX TREO% 94 D50 1.0-1.4um CeO2/ITREO% 60-70 D90 <4um La2O3/TREO% 20-30 D99 <6um Pr6O11/TREO% <3 BET 2-4m2/g Contact:
Phone: Fax: Email: Shanghai Gona Industrial Co., Ltd.
Building D3,No. 250, Xinfei Road, Songjiang district,Shanghai Shanghai 200000 China 6/13/22 8:54 GMT
Community Camouflage Cell Tower Pine Tree Communication
Camouflaged Tree Tower iBionic tree, also known as simulation tower and bionic communication tower, belongs to the technical field of communication launch tower. It is to coordinate the communication tower with the surrounding natural environment and effectively solve the problem of difficult station construction in scenic spots and other places. Its advantage is to maintain all the advantages of the original single tube tower and make major breakthroughs and improvements in its shape. Taking the naturally growing pine and camphor trees as simulation modeling samples, design sketch drawings and computer effect drawings, formulate sculpture and spraying process procedures, and simulate and camouflage the single tube tower, Make people unaware of the existence of the tower and integrate it into the surrounding natural environment. Contact:
Phone: Fax: Email: Hebei Changtong Steel Structure Co., Ltd.
Fu Zhao Village,Guang Chuan Town, Jing County, Hengshui City, Hebei Province Hengshui 053000 China 6/13/22 2:35 GMT
CGCC Ppgi Coated Coil HDG Gi Hot Dipped Galvanized Steel Coil
Product Parameters Product Name Color Pre-coated Galvanized Coil Standard AISI, ASTM, JIS, DIN, BS, EN, GB Material Grade DX51D DX52D SGCC SPCC Surface Treatment Color Pre-coated Color All Ral Color or as customized Top Coating Thickness 15μm-25μm Back Coating Thickness 5μm-20μm Thickness 0.12mm-1.2 , mm Width 600mm-1500mm or as customized Package Standard seaworthy export package Original Port Tianjin Port Delivery Time 7-15 working days after got the deposit Contact:
Phone: Fax: Email: Shandong Rigang Steel Industry Co., Ltd
Room 1402, Building 2, Qisheng Square, No. 1666, Xinluo Street Shandong 250000 China 6/9/22 10:00 GMT
Alloy Structural Steel Supplier ODM Alloy Structural Steel Supplier Stock
Alloy Structural Steel Supplier ODM Alloy Structural Steel Supplier Stock 1. Structural alloy steel (structural alloy steel) refers to steel that is used as mechanical parts and various engineering components and contains one or several alloying elements in a certain amount. 2. Alloy structural steel is generally divided into quenched and tempered structural steel and case-hardened structural steel. ① The carbon content of quenched and tempered structural steel is generally about 0.25% to 0.55%. For structural parts of a given cross-sectional size, during the quenching and tempering treatment (quenching and tempering), if it is quenched along the section, the mechanical properties It is good, but if hardenability is not carried out and free ferrite appears in the microstructure, the toughness decreases. For steels with a tendency to temper brittleness, such as manganese steel, chromium steel, nickel-chromium steel, etc., they should be cooled quickly after tempering. The quenching critical diameter of this type of steel increases with the increase of grain size and alloying element content. For example, 40Cr and 35SiMn steels are about 30 to 40 mm, while 40CrNiMo and 30CrNi2MoV steels are about 60 to 100 mm. Structural parts such as shafts and connecting rods with large loads. ②Surface hardening structural steel is used to manufacture parts with hard and wear-resistant surface and flexible core, such as gears, shafts, etc. In order to make the toughness of the core of the part high, the carbon content in the steel should be low, generally 0.12 to 0.25%, and there should be an appropriate amount of alloying elements to ensure suitable hardenability. Nitride steel also needs to add alloying elements (such as Al, Cr, Mo, etc.) that are easy to form nitrides. Carburizing or carbonitriding steel, after carburizing or carbonitriding at 850~950℃, quenched and used in low temperature tempering (about 200℃). Nitrided steel is treated by nitriding (480~580℃) and used directly without quenching and tempering. 3.Production Process According to the steel grade and steel quality requirements, the smelting of alloy structural steel can be carried out by oxygen top-blown converter, open hearth, electric arc furnace; or by electroslag remelting and vacuum degassing. The ingot can be cast by continuous casting or die casting. The ingot should be slowly cooled or hot forged and rolled. When the ingot is heated, the temperature should be uniform and there should be sufficient holding time to improve segregation defects and avoid uneven deformation during forging and rolling; the steel after forging and rolling is small in size, especially carburizing with a carbon content of about 0.2%. Steel should be cooled rapidly at temperatures above 600°C to avoid aggravating the banded structure; for forgings with larger cross-sections, measures should be taken to eliminate internal stress and white spots. Quenched and tempered steel should be quenched into martensite structure as much as possible, and then tempered into sorbite structure; in the carburizing process of carburized steel, the concentration gradient of the carburizing layer should not be too large, so as to avoid continuous network on the grain boundary of the carburizing layer. Carbide; nitrided steel must first be heat treated to obtain the required properties, and then final finishing can be used for nitriding. After nitriding treatment, no processing is required except that the brittle "white layer" is ground and removed. 4. Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:mikizhuo Songshun Facebook:Songshun Steel Songshun YouTube:MiKi Zhuo Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ songshunsteel , 41404340 Minimum Order: 2 barrels Contact:
Phone: Fax: Email: Dongguan Songshun Mould Steel Co., Ltd.
1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town Dongguan 523846 China 6/9/22 9:54 GMT
ASTM 8620 JIS SNCM220 DIN 1.6523 Alloy Structural Steel Application
ASTM 8620 JIS SNCM220 DIN 1.6523 Alloy Structural Steel Application Application What is the application of 8620 steel? AISI 8620 alloy steel is mainly used as a material for impact and wear resistant parts such as automobile bearings, camshafts, etc. In the carburized state it is used for gears, ring gears, shafts and crankshafts.It can also be used for the claws and cone bodies of the roller cone bits for oil drilling and metallurgical open-pit mines, and to manufacture the forgings of the connecting rod valve section of the steam turbine gear whole rotor internal combustion engine. Heat Treatment AISI/SAE/ASTM 8620 Steel Heat Treatment (1)Glow It can be fully annealed by heating to 820 – 850℃ and holding until the temperature is uniform throughout the section, and furnace or air-cooled. (2)Cranking Tempering of heat treated and water cooled parts (not carburized) is done at 400 to 1300 F to improve the toughness of the case with minimal impact on its hardness. This also reduces the possibility of grinding cracks. (3)Hardening It is austenitized at around 840°C – 870°C and oil or water quenched depending on the cross-section size and complexity. And cool it in air or oil required. (4)Normalize 910ºC (1675ºF) and air cooled. This is another method to improve the machinability of 8620 steel materials. Normalizing can also be applied prior to case hardening. (5)Heat treatment This alloy can be hardened by heating to 1500 F and then water quenching. Carburize at 1650 to 1700 F in a suitable carburizing medium and oil quench to harden. Improved properties of the carburized case and core can be obtained by furnace cooling by carburizing at 1650-1700F and then reheating to 1575F. Test How is ASTM 8620 steel tested? Our AISI 8620 alloy steel guarantees high quality, and we use UT test to check each piece of steel; UT test: Ultrasonic Test, ultrasonic inspection and flaw detection, is one of the methods of non-destructive testing in the industry. When the ultrasonic wave enters the object and encounters a defect, a part of the sound wave will be reflected, and the transmitter and receiver can analyze the reflected wave, and the defect can be detected extremely accurately. And it can display the position and size of internal defects, and measure the thickness of materials. Ultrasound in UT is a mechanical wave with a frequency higher than 20 kHz. The frequency commonly used in ultrasonic flaw detection is 0.5 to 5 MHz. This kind of mechanical wave can propagate at a certain speed and direction in the material, and it will be reflected when encountering a heterogeneous interface with different acoustic impedance (such as a defect or the bottom surface of the measured object, etc.). We supply Songshun steel from stock AISI 8620 alloy steel round bar: Specifications: Diameter: 16mm – 800mm; Length: 2000mm-5000mm Surface: black/bright/polished/peeled/turned; AISI 8620 steel plate: Specifications: Thickness: 16-800mm; Width: 205mm-810mm; Length: 2000mm-5000mm Surface: black/bright/polished/peeled/turned; We also have our own cutting and processing facilities. Specifications can be tailored and customized to your needs. We have been producing alloy steel for more than ten years. As a professional 8620/1.6523/SNCM220 steel supplier, you are welcome to contact us at any time. songshunsteel41404340 Minimum Order: 1 bags Contact:
Phone: Fax: Email: Dongguan Songshun Mould Steel Co., Ltd.
1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town Dongguan 523846 China 6/9/22 9:50 GMT
AISI 8620 alloy steel Processing technology AISI 8620 alloy steel mill
1. 8620 steel has high hardenability without brittleness. It is also called DIN 1.6523 and JIS SNCM220 steel. It also has good weldability, little tendency to form cold cracks, and good machinability and plasticity by cold deformation. It is used to make gears, shafts, bolts, springs, hand tools, etc.AISI 8620 alloy steel properties and 8620 steel composition as below. 2. 8620 chemical composition Carbon C: 0.18~0.23 Silicon Si: 0.15~0.35 Manganese Mn: 0.70~0.90 ASTM8620 alloy structural steel ASTM8620 alloy structural steel Sulfur S: Allowable residual content≤0.035 P: Allowable residual content≤0.035 Chromium Chromium: 0.40~0.60 Nickel Nickel: 0.40~0.70 Copper Cu: allowable residual content ≤ 0.030 Molybdenum Molybdenum: 0.15~0.25 3.AISI/SAE/ASTM 8620 Steel Heat Treatment (1)Glow It can be fully annealed by heating to 820 – 850℃ and holding until the temperature is uniform throughout the section, and furnace or air-cooled. (2)Cranking Tempering of heat treated and water cooled parts (not carburized) is done at 400 to 1300 F to improve the toughness of the case with minimal impact on its hardness. This also reduces the possibility of grinding cracks. (3)Hardening It is austenitized at around 840°C – 870°C and oil or water quenched depending on the cross-section size and complexity. And cool it in air or oil required. (4)Normalize 910ºC (1675ºF) and air cooled. This is another method to improve the machinability of 8620 steel materials. Normalizing can also be applied prior to case hardening. (5)Heat treatment This alloy can be hardened by heating to 1500 F and then water quenching. Carburize at 1650 to 1700 F in a suitable carburizing medium and oil quench to harden. Improved properties of the carburized case and core can be obtained by furnace cooling by carburizing at 1650-1700F and then reheating to 1575F. 4. For more steel product information,Please search our company(Dongguan Songshun Mould Steel Co., Ltd.) and check the official website!!! songshunsteel41404340 Minimum Order: 1 bags Contact:
Phone: Fax: Email: Dongguan Songshun Mould Steel Co., Ltd.
1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town Dongguan 523846 China 6/9/22 9:41 GMT
Forging 4340 Alloy Steel Good Ductility Forging 4340 Alloy Steel Factory
Describe: 4340 belongs to the American standard high-strength alloy structural steel, which is made of high-quality carbon structural steel by appropriately adding one or more alloying elements (the total content does not exceed 5%). Corresponding steel number: China GB steel number 40CrNiMoA, German DIN steel number 36CrNiMo4, German DIN material number 1.6511, French NF standard 40NCD3, Japanese JIS standard SNCM439, British BS standard 816M40, American AISI/ASTM4340, American UNS standard G43400 chemical composition: C:0.37-0.44 Si:0.17-0.37 S:≤0.035 P:≤0.035 Mn: 0.50-0.80 Cr: 0.60-0.90 Mo: 0.15-0.25 Ni: 1.25-1.65 Heat treatment specification: Quenching at 850℃, oil cooling; tempering at 600℃, water cooling, oil cooling Brinell hardness GBW of annealed or high-temperature tempered steel is less than or equal to 269; Mechanical properties: Tensile strength σb (MPa): ≥980(100) Yield strength σs (MPa): ≥835(85) Elongation δ5 (%): ≥12 Area shrinkage ψ (%): ≥55 Impact energy Akv (J): ≥78 Elongation δ5 (%): ≥12 Area shrinkage ψ (%): ≥55 Impact energy Akv (J): ≥78 Impact toughness value αkv (J/cm2): ≥98(10) Sample size: sample blank size is 25mm Alloy 4340 steel (also known as AISI 4340) is a low alloy steel with high toughness in the annealed condition. Alloy 4340 is characterized by its excellent ductility, formability, and weldability, making it an excellent metal for a variety of structural applications and assemblies, including power transmission gears and shafts, aircraft parts, and machinery. 4340 steel is mainly iron based, nickel is another major chemistry. Standard specifications for the 4340 include AISI 4340, AMS 6359, ASTM A711, and more. Minimum Order: 2 barrels Contact:
Phone: Fax: Email: Dongguan Songshun Mould Steel Co., Ltd.
1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town Dongguan 523846 China 6/9/22 9:35 GMT
Hot Rolled AISI 4340 Alloy Structural Steel Warehouse
Hot Rolled AISI 4340 Alloy Structural Steel Warehouse Introduction AISI 4340 alloy structural steel is a medium carbon nickel-chromium-molybdenum steel alloy, very similar to 4130 steel, but AISI 4340 alloy steel has high white spot sensitivity and temper brittleness, and is widely used in large- sized important quenched and tempered parts, shafts , transmission parts of heavy chemical machinery, etc., and AISI 4340 steel is a wear-resistant material with particularly good wear resistance, impact resistance and impact resistance, as well as excellent atmospheric corrosion resistance, and because the material is usually in Annealed condition, it also has the advantages of excellent hardenability, stability against overheating and short construction period. Our AISI 4340 alloy steel can be not only heat treated but also fusion and resistance welding. Chemical Composition The chemical composition of Song Shun AISI 4340 alloy structural steel. C:0.37-0.44 Si:0.17-0.37 S:≤0.035 P:≤0.035 Mn:0.50-0.80 Cr:0.60-0.90 Mo:0.15-0.25 Ni:1.25-1.65 Mechanical Properties The mechanical properties of AISI 4340 alloy structural steel Tensile strength σb (MPa): ≥980(100) Yield strength σs (MPa): ≥835(85) Elongation δ5 (%): ≥12 Area shrinkage ψ (%): ≥55 Impact energy Akv (J): ≥78 Elongation δ5 (%): ≥12 Area shrinkage ψ (%): ≥55 Impact energy Akv (J): ≥78 Impact toughness value αkv (J/cm2): ≥98(10) Sample size: sample blank size is 25mm AISI 4340 High Quality Alloy Steel Round Bar · GB steel number: CN:40CrNiMoA DIN:36CrNiMo4 JIS:SNCM439 BS: 816M40 US:AISI/ASTM4340 · Chemical component: C:0.37-0.44 Si:0.17-0.37 S:≤0.35 P:≤0.35 Mn:0.50-0.80 Cr:0.60-0.90 Mo:0.15-0.25 N:1.25-1.65 · Usage: It is used as important quenched and tempered parts that require good toughness, high strength and large size, such as heavy machinery and high- load shafts, turbine shafts with a diameter greater than 250mm, helicopter rotor shafts, turbojet engine turbine shafts, blades, high Loaded transmission parts, crankshaft fasteners. gears, etc.; · Types:5140 /4140 / 4340 / 4142 / 15CrMo / 6150 / 38CrMoAI / 8620 ..... · Serve:OEM/ODM · Delivery status:With heat treatment (normalized, annealed or high temperature tempered) or without heat treatment Goods, the delivery status should be specified in the contract. Our company Dongguan Songshun Mould Steel Co., Ltd. specializes in the production of alloy steel for more than 10 years, mainly producing various alloy steel products, if you need more price, cooperation or quality information, please notify us jacklu@songshunsteel.com songshunsteel41404340 Minimum Order: 2 barrels Contact:
Phone: Fax: Email: Dongguan Songshun Mould Steel Co., Ltd.
1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town Dongguan 523846 China 6/9/22 9:27 GMT
high speed steel composition forged high speed steel composition supplier
high speed steel composition forged high speed steel composition supplier High-speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or front steel, commonly known as white steel. High-speed steel was created in 1898 by F.W. Taylor and M. White in the United States. High-speed steel has good process performance, good strength and toughness, so it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 1960s, which has the advantage of avoiding the reduction of mechanical properties and heat treatment deformation caused by the segregation of carbides produced by the smelting method. Craftsmanship The heat treatment process of high-speed steel is more complicated, and it must go through a series of processes such as quenching and tempering. Quenching is generally carried out in two stages due to its poor thermal conductivity. First preheat at 800 ~ 850 ℃ (to avoid causing large thermal stress), then quickly heat to the quenching temperature of 1190 ~ 1290 ℃ (the actual temperature of different brands is different), and then oil cooling or air cooling or gas cooling. The factories are all heated by salt furnaces, and vacuum furnaces are also widely used. After quenching, a part (about 30%) of retained austenite remains in the internal structure and is not transformed into martensite, which affects the performance of high-speed steel. In order to transform the retained austenite and further improve the hardness and wear resistance, it is generally necessary to carry out 2 to 3 tempering times, the tempering temperature is 560 ° C, and the temperature is kept for 1 hour each time. Production method: Usually electric furnace is used for production, and powder metallurgy method was used to produce high-speed steel, so that the carbides are evenly distributed on the substrate in the form of extremely fine particles, which improves the service life. Uses: used to manufacture various cutting tools. Such as turning tools, drills, hob, machine saw blades and molds with high requirements. Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:mikizhuo Songshun Facebook:Songshun Steel Songshun YouTube:MiKi Zhuo Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ songshunsteel , 41404340 Minimum Order: 2 barrels Contact:
Phone: Fax: Email: Dongguan Songshun Mould Steel Co., Ltd.
1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town Dongguan 523846 China SOURCE: Import-Export Bulletin Board (https://www.imexbb.com/)
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