Type II

ASTM A447/A447M-1998 - Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class),for High-Temperature Service

This page provides Type II datasheet, Type II mechanical properties, chemical element Type II, technical specifications of Type II steel material properties. Type II performance specifications.

Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy Type II ASTM USA Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class),for High-Temperature Service
J94203
J94204
J94603
WCA
WCB
WCC
J02502
J03002
J02503
Type I
Datasheet for:Steel Grades:Special Alloy:Type II

Chemical composition(mass fraction)(wt.%) of the Type II

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.20-0.45 ≤1.75 ≤2.5 ≤0.05 ≤0.05 23.0-28.0 10.0-14.0 ≤0.2

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade Type II

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
195 (≥) 876 (≥) 21 23 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 414
Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
41 - -     0.13 -  
883 936 - 31.3 121   -  
482 - 13 13.2   243 312
Heat treated : 1669°C - 1784°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
Type410S UNS USA
Martensitic special steel
Type410S UNS USA
Martensitic special steel
Type410Cb(XM-30) UNS USA
Martensitic special steel
Type410Cb(XM-30) UNS USA
Martensitic special steel
Type418(GreekAscollOy) UNS USA
Type418(GreekAscollOy) UNS USA
S42023 UNS USA
Martensitic special steel
S42023 UNS USA
Martensitic special steel
Type420FSe UNS USA
Martensitic special steel
Type420FSe UNS USA
Martensitic special steel
Type440F UNS USA
Martensitic special steel
Type440F UNS USA
Martensitic special steel
PH15-7MO(Type632) UNS USA
Martensitic special steel
PH15-7MO(Type632) UNS USA
Martensitic special steel
AM-350(Type633) UNS USA
precipitation hardening
AM-350(Type633) UNS USA
precipitation hardening
AM-350(Type633) UNS USA
precipitation hardening
AM-350(Type633) UNS USA
precipitation hardening
AM-355(Type634) UNS USA
precipitation hardening
AM-355(Type634) UNS USA
precipitation hardening
Contact Suppliers with your enquiries for Type II any of the shape and size.

Haihong International Trade (HK) CO., Limited

Stainless Steel, Special Steel, Compressor Blading, Turbine Blading, Superalloy Supplier.
Type II can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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