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T20812

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H12 H13
#T20812

Description

USA UNS T20812 Alloy tool steel and T20812 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: T20812
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy T20812 UNS USA Alloy tool steel
W2-A
UNS T72302
W2-C
W5
T72305
H10
H11
T20811
T20810
H12

Chemical composition(mass fraction)(wt.%) of the T20812

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 T20812

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)
822 (≥) 794 (≥) 33 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade T20812

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
12 - -     0.44 -  
273 671 - 14.3 142   -  
114 - 22 21.2   414 131

Heat Treatment of steel grade T20812

Heat treated : 1762°C - 1131°C

Technological Curves of steel grade T20812

Cross Reference Table (Equivalent Grade) of T20812

Grade Standard Country Application
T20812 UNS USA Alloy tool steel
H13 ASTM USA Alloy tool steel
H12 H13
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Jiangyou Longhai Special Steel Co.,Ltd.

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