1.7225 material steel DIN 1.7225 material steel alloy products

4140 steel is a kind of alloy structural steel. It belongs to the steel with
the American grade equivalent to the 42CrMo grade in my country. This kind of
steel belongs to the medium hardenability steel with high yield, good
comprehensive mechanical properties, good strength, good toughness and
hardenability. High advantages, its carbon content is 0.33%-0.48%, its tensile
strength is 795 MPa, and its hardness is 241HB. After heat treatment at 4140,
it has good strength and good comprehensive mechanical properties, and it has
good manufacturability. Fasteners, salvage tools, etc.

China GB steel number 42CrMo, Germany DIN steel number 42CrMo4, Germany DIN
material number 1.7225, French NF standard 40CD4/42CD4, Japanese JIS standard
SCM440, British BS standard 708M40/708A42/709M40, American AISI/ASTM 4140,
American SAE 4140, American UNS Standard G41400
(4140 alloy structural steel, executive standard: ASTM A29/A29M-04)

Mechanical properties:
Tensile strength σb (MPa): ≥1080(110)
Yield strength σs (MPa): ≥930(95)
Elongation δ5 (%): ≥12
Area shrinkage ψ (%): ≥45
Impact energy Akv (J): ≥63
Impact toughness value αkv (J/cm2): ≥78(8)
Hardness: ≤217HB
Sample size: sample blank size is 25mm

Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and
tool steel products, including high speed tool steel, cold work tool steel,
hot work tool steel, plastic mould steel, engineering steel and machine
structural steel etc. After more than 10 years development and growing,
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