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M7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M7

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ASTM M7

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This page is mainly introduced the M7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
M7

Steel Garde:M7
Type:Special Alloy
Country:USA
Standard:ASTM
Application:M7

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France
M78	AFNOR	France
SUSXM7	JIS	Japan
STSXM7	KS	Korea
STSXM7	KS	Korea
CNS XM7	CNS	China
CNS XM7	CNS	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	964～301	σb/MPa
Yield Strength	824	σ 0.2 ≥/MPa
Elongation	07	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	068～512	-
HRC	30	-

Physical Properties

Thermal expansion	41-01	e-6/K
Thermal conductivity	92-15	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1226-8223	째C
Density	6567-5965	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)
M7 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