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12Q

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11Q 13Q
#12Q

Description

USA ASTM 12Q Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures and 12Q Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 12Q
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 12Q ASTM USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
2A,2Q
3A,3Q
4A,4Q
5N
6N
7Q
8Q
9Q
10Q
11Q

Chemical composition(mass fraction)(wt.%) of the 12Q

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) V(%)
0.45-0.55 0.20-0.80 0.65-0.95 0.04 0.045 0.80-1.10 ≥0.15

Mechanical Properties of steel grade 12Q

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)
524 (≥) 495 (≥) 21 42 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade 12Q

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
44 - -     0.43 -  
954 427 - 42.3 414   -  
831 - 41 33.2   413 141

Heat Treatment of steel grade 12Q

Heat treated : 1825°C - 1956°C

Technological Curves of steel grade 12Q

Cross Reference Table (Equivalent Grade) of 12Q

Grade Standard Country Application
ASTM 12Q AISI USA
40CrNi12q STAS/SR Romania Alloy structural steel
21MoMnCr12q STAS/SR Romania Alloy structural steel
21MoMnCr12q STAS/SR Romania Alloy structural steel
21TiMnCr12q STAS/SR Romania Alloy structural steel
12Q ASTM USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
12Q ASTM USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
11Q 13Q
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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