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 tons

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