1.6655 Tool Die Steels

1.6655 - Specification & Application

Heat treatable low alloyed NiCrMo steel

Chemical composition(wt.%) of 1.6655 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.32
Si - 0.28
Mn - 0.38
Cr - 1.35
Mo - 0.35
Ni - 2.90

1.6655 - Detail

Professional 1.6655(32NiCrMo12-5,AISI A723,30NiCrMo12,30NCD12) Forged Forging Steel Rings Seamless Rolled Rings.


Mechanical properties of grade 1.6655

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)
243 (≥) 644 (≥) 32 23 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical properties of grade 1.6655

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
398 (≥) 386 (≥) 41 33 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
477 662 429

Equivalent Grade

Equivalent Products

We can customize the production of 1.6655 grade, contact us for the best solution.
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