T20812 Tool Die Steels

T20812 - Specification & Application

Hot-Work Tool Steel

Chemical composition(wt.%) of T20812 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.30 0.40
Si 0.80 1.20
Mn 0.20 0.50
P - 0.030
S - 0.030
Cr 4.75 5.50
Mo 1.25 1.75
V 0.20 0.50
W 1.00 1.70
Ni+Cu - 0.75

T20812 - Detail

Hot-Work Tool Steel

Mechanical properties of grade T20812

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)
536 (≥) 918 (≥) 43 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical properties of grade T20812

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
982 (≥) 129 (≥) 42 42 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 111
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
742 848 392

Equivalent Grade

Equivalent Products

We can customize the production of T20812 grade, contact us for the best solution.
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