120W4 Tool Die Steels

120W4 - Specification & Application

Alloyed W steel

Chemical composition(wt.%) of 120W4 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 1.15 1.25
Si 0.15 0.30
Mn 0.20 0.35
P - 0.035
S - 0.035
Cr 0.15 0.25
Mo - -
V - -
W 0.90 1.10

120W4 - Detail

Alloyed W steel

Mechanical properties of grade 120W4

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)
685 (≥) 191 (≥) 23 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical properties of grade 120W4

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
426 (≥) 337 (≥) 31 44 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 123
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
287 356 178

Equivalent Grade

Equivalent Products

We can customize the production of 120W4 grade, contact us for the best solution.
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