Sitemap | E-mail:sales@steelgs.com

M8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M8

Location » Home » Grades > Tool Die Steels > M8

Contact

+86-13880247006

E-mail: sales@longhaisteel.com

SAE M8

Profile

This page is mainly introduced the M8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M8,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:M8
Type:Tool Die Steels
Country:USA
Standard:SAE
Application:High-Speed Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.80	0.85
Si	0.20	0.40
Mn	0.10	0.40
Cr	4.00	4.50
Mo	4.30	4.70
V	1.35	1.65
W	5.25	5.75
Nb		1.25

Mechanical Properties

Tensile strength	452～029	σb/MPa
Yield Strength	471	σ 0.2 ≥/MPa
Elongation	70	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	293～710	-
HRC	30	-

Physical Properties

Thermal expansion	65-65	e-6/K
Thermal conductivity	58-64	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3958-0765	째C
Density	0018-6574	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)
M8 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