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A8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A8

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ASTM A8

Catalog

A8 Profile
A8 Chemical composition
A8 Mechanical Properties
A8 Physical Properties
A8 Heat treatment
A8 Size Availability
A8 Relevant products

Profile

This page is mainly introduced the A8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Cold-Work Tool Steel

Steel Garde:A8
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Cold-Work Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.50	0.60
Si	0.75	1.10
Mn	0.20	0.50
P		0.030
S		0.030
Cr	4.75	5.50
Mo	1.15	1.65
V
W	1.00	1.50
Ni＋Cu		0.75

Mechanical Properties

Tensile strength	151～313	σb/MPa
Yield Strength	771	σ 0.2 ≥/MPa
Elongation	02	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	774～502	-
HRC	30	-

Physical Properties

Thermal expansion	77-49	e-6/K
Thermal conductivity	34-33	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9070-8940	째C
Density	6498-9460	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)
A8 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