ASTM H12
ASTM H12 PDF ASTM H12 Word
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy H12 ASTM USA Alloy tool steel
W1-C
W2-A
UNS T72302
W2-C
W5
T72305
H10
H11
T20811
T20810
Datasheet for:Steel Grades:Tool Steel And Hard Alloy:H12

Chemical composition(mass fraction)(wt.%) of the H12

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%) V(%) W(%)
0.30~0.40 0.80~1.20 0.20~0.50 ≤0.030 ≤0.030 4.75~5.50 1.25~1.75 0.20~0.50 1.00~1.70

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade H12

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)
431 (≥) 969 (≥) 13 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 211
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
42 - -     0.24 -  
173 793 - 41.3 143   -  
794 - 12 13.2   412 311
Heat treated : 1747°C - 1337°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
H12 ASTM USA
Alloy tool steel
BH12 UK
Carbide for cutting tools
BH12 UK
Carbide for cutting tools
15X18H12C4TЮ
Austenitic - Martensitic steel
03X18H12 ГОСТ Russia
Austenitic
03X18H12T ГОСТ Russia
Austenitic
12X18H12T ГОСТ Russia
Austenitic
08X18H12Б ГОСТ Russia
Austenitic
ISO H12 ISO ISO
ISO standard Austenite size heat resistant steel
SWRCH12R CNS China
China Taiwan Structural steel
SWRCH12A CNS China
China Taiwan Structural steel
SWRCH12K CNS China
China Taiwan Structural steel
EN FeH12FU EN Euronorm
Euronorm Structural steel
H12

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