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40CrMn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 40CrMn

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This page is mainly introduced the 40CrMn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 40CrMn,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
40CrMn

Steel Garde:40CrMn
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
40CrMnMo7	DIN	Germany
40CrMnMoS8-6	DIN	Germany
40CrMnNiMo8-6-4	DIN	Germany
40CrMnMo8	AFNOR	France
40CrMnMo8	AFNOR	France
40CrMnNiMo8-6-4①	ISO	ISO
40CrMnNiMo8-6-4①	ISO	ISO
S40CrMnlSil	STAS/SR	Romania
40CrMnMo7	UNE	Spain
40CrMnMo	GBT	China
EN 40CrMnNiMo8-6-4	EN	Euronorm

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	363～430	σb/MPa
Yield Strength	296	σ 0.2 ≥/MPa
Elongation	12	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	268～994	-
HRC	30	-

Physical Properties

Thermal expansion	75-10	e-6/K
Thermal conductivity	45-27	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3731-7550	째C
Density	7382-6396	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
40CrMn Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk