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M34 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M34

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ASTM M34

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This page is mainly introduced the M34 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M34,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:M34
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:High-Speed Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.85	0.92
Si	0.20	0.45
Mn	0.15	0.40
P		0.030
S		0.030
Cr	3.50	4.00
Mo	7.75	9.20
V	1.90	2.30
W	1.40	2.10
Co	7.75	8.75

Mechanical Properties

Tensile strength	266～742	σb/MPa
Yield Strength	104	σ 0.2 ≥/MPa
Elongation	59	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	579～442	-
HRC	30	-

Physical Properties

Thermal expansion	00-54	e-6/K
Thermal conductivity	25-16	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9678-2683	째C
Density	7412-2050	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)
M34 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