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2J21

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2J12 2J23
#2J21

Description

China GBT 2J21 Deformable permanent magnetic alloy and 2J21 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 2J21
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 2J21 GBT China Deformable permanent magnetic alloy
1J88
1J89
1J90
1J91
2J04
2J07
2J09
2J10
2J11
2J12

Chemical composition(mass fraction)(wt.%) of the 2J21

C(％) Si(％) Mn(％) P(％) S(％) Mo(％) Co(%) Fe(%)
≤0.03 ≤0.30 0.10-0.50 0.025 0.025 10.5-11.5 11.0-13.0 Bal

Mechanical Properties of steel grade 2J21

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)
793 (≥) 521 (≥) 12 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade 2J21

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
21 - -     0.23 -  
354 869 - 21.3 323   -  
764 - 43 44.2   224 313

Heat Treatment of steel grade 2J21

Heat treated : 1499°C - 1455°C

Technological Curves of steel grade 2J21

Cross Reference Table (Equivalent Grade) of 2J21

Grade Standard Country Application
2J21 GBT China Deformable permanent magnetic alloy
2J12 2J23
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Jiangyou Longhai Special Steel Co.,Ltd.
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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