40CrMn Structural Steel

Chemical composition % of the ladle analysis of grade 40CrMn

C(％)	Si(％)	Mn(％)	Cr(％)
0.37-0.45	0.17-0.37	0.90-1.20	0.90-1.20

40CrMn

Mechanical properties of grade 40CrMn

Proof strength Rp0.2 (MPa)	Tensile strength Rm (MPa)	Impact energy KV (J)	Elongation at fracture A(%)	Reduction in cross section on fracture Z(%)	As-Heat-Treated Condition	Brinell hardness (HBW)
169 (≥)	116 (≥)	41	43	33	Solution and Aging, Annealing, Ausaging, Q+T,etc	142

Physical properties of grade 40CrMn

Property	Density kg/dm3	Temperature T °C/F	Specific heat J / kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2	Expansion rate
619 (≥)	897 (≥)	32	23	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	434
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
427	462	914

40CrMn Range of products

Product type	Products	Dimension	Processes	Deliver Status
Plates / Sheets	Plates / Sheets	0.08-200mm(T)*W*L	Forging, hot rolling and cold rolling	Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar	Round Bar, Flat Bar, Square Bar	Φ8-1200mm*L	Forging, hot rolling and cold rolling, Cast	Black, Rough Turning, Shot Blasting,
Coil / Strip	Steel Coil /Steel Strip	0.03-16.0x1200mm	Cold-Rolled & Hot-Rolled	Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes	Seamless Pipes/Tubes, Welded Pipes/Tubes	OD:6-219mm x WT:0.5-20.0mm	Hot extrusion, Cold Drawn, Welded	Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade	Standard	Country	Application
40CrMnMo7			Heat resistant materials for the extrusion processing of aluminum and aluminum alloys
40CrMnMoS8-6			Tool Steels; Technical Conditions of Delivery
40CrMnNiMo8-6-4			Alloyed CrMnNiMo steel
1.2311,40CrMnMoS8-6,1.2312,P20,40CMD8			Tool Steels; Technical Conditions of Delivery

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