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T12A

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China JB T12A 机床零件热处理技术条件 第1部分：退火、正火、调质 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: T12A / T12A
Category Grade Standard Region/Area Standard Content
Metals T12A JB/T 8491.1 China 机床零件热处理技术条件 第1部分：退火、正火、调质

Chemical composition(mass fraction)(wt.%) of the T12A

Element Min Max Similar

Mechanical Properties of steel grade T12A

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)
667 (≥) 272 (≥) 44 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade T12A

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
24 - -     0.22 -  
187 441 - 13.3 123   -  
657 - 32 24.2   432 314

Heat Treatment of steel grade T12A

Heat treated : 1696°C - 1532°C

Technological Curves of steel grade T12A

Cross Reference Table (Equivalent Grade) of T12A

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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Jiangyou Longhai Special Steel Co.,Ltd.

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