D6 Tool Die Steels

D6 - Specification & Application

Cold-Work Tool Steel

Chemical composition(wt.%) of D6 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 2.00 2.20
Si 0.70 0.90
Mn 0.20 0.40
Cr 11.50 12.50
Mo - -
V - -
W 0.60 0.90
Co 2.50 3.50

D6 - Detail

Cold-Work Tool Steel

Mechanical properties of grade D6

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)
285 (≥) 231 (≥) 32 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical properties of grade D6

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
866 (≥) 858 (≥) 23 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 124
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
145 323 621
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