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M2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M2

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ASTM M2

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This page is mainly introduced the M2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
High-Speed Tool Steel

Steel Garde:M2
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:High-Speed Tool Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
M2	ASTM	USA
Stellite 98M2	Whole	Whole

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.95	1.05
Si	0.20	0.45
Mn	0.15	0.40
P		0.030
S		0.030
Cr	3.75	4.50
Mo	4.50	5.50
V	1.75	2.20
W	5.50	6.75
Co

Mechanical Properties

Tensile strength	634～838	σb/MPa
Yield Strength	614	σ 0.2 ≥/MPa
Elongation	99	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	473～763	-
HRC	30	-

Physical Properties

Thermal expansion	23-77	e-6/K
Thermal conductivity	15-53	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9199-4311	째C
Density	2516-9515	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)
M2 Tool Die Steels	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