P3 Tool Die Steels

P3 - Specification & Application

Mold Steel

Chemical composition(wt.%) of P3 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si - 0.40
Mn 0.20 0.60
P - 0.030
S - 0.030
Cr 0.40 0.75
Mo - -
V - -
W - -
Ni+Cu - 0.75
Ni 1.00 1.50

P3 - Detail

Mold Steel

Mechanical properties of grade P3

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)
564 (≥) 724 (≥) 14 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical properties of grade P3

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
384 (≥) 594 (≥) 34 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 433
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
829 364 833
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