A8 Tool Die Steels

A8 - Specification & Application

Cold-Work Tool Steel

Chemical composition(wt.%) of A8 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
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

A8 - Detail

Cold-Work Tool Steel

Mechanical properties of grade A8

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
859 (≥) 661 (≥) 41 34 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical properties of grade A8

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
113 (≥) 962 (≥) 42 41 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 212
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
289 171 626

Equivalent Products

We can customize the production of A8 grade, contact us for the best solution.
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