1.2721 Tool Die Steels

1.2721 - Specification & Application

Alloyed NiCr steel

Chemical composition(wt.%) of 1.2721 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.45 0.55
Si 0.15 0.35
Mn 0.40 0.60
P - 0.035
S - 0.035
Cr 0.90 1.20
Mo - -
V - -
Ni 3.00 3.50

1.2721 - Detail

Alloyed NiCr steel

Mechanical properties of grade 1.2721

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)
745 (≥) 138 (≥) 33 31 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical properties of grade 1.2721

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
127 (≥) 794 (≥) 23 32 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
152 769 698

Equivalent Grade

Equivalent Products

We can customize the production of 1.2721 grade, contact us for the best solution.
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