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H12

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T20810 T20812
#H12

Description

USA ASTM H12 Alloy tool steel and H12 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: H12
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

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 of steel 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)
357 (≥) 963 (≥) 44 14 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade H12

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
11 - -     0.43 -  
653 291 - 13.3 443   -  
594 - 42 43.2   224 324

Heat Treatment of steel grade H12

Heat treated : 1385°C - 1364°C

Technological Curves of steel grade H12

Cross Reference Table (Equivalent Grade) of H12

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
GH128 GBT China wrought Fe/Ni-base superalloy
HGH128 GBT China Super alloy welding wire
T20810 T20812
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Jiangyou Longhai Special Steel Co.,Ltd.

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