Chinese
Available 24/7 at sales@steel-grades.com
SGSG
Post Your Request Now
Toggle menu

3J21

Favorite Datasheet
3J09 3J22
#3J21

Description

China GBT 3J21 Elastic Alloy and 3J21 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 3J21
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 3J21 GBT China Elastic Alloy
2J53
2J63
2J64
2J65
2J67
2J83
2J84
2J85
3J01
3J09

Chemical composition(mass fraction)(wt.%) of the 3J21

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Co(%)
0.07-0.12 0.60 1.70-2.30 0.010 0.010 19.0-21.0 11.0-16.0 6.5-7.5 39.0-41.0

Mechanical Properties of steel grade 3J21

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)
875 (≥) 861 (≥) 31 43 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 3J21

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
23 - -     0.11 -  
656 825 - 42.3 121   -  
297 - 12 44.2   131 132

Heat Treatment of steel grade 3J21

Heat treated : 1877°C - 1697°C

Technological Curves of steel grade 3J21

Cross Reference Table (Equivalent Grade) of 3J21

Grade Standard Country Application
3J21 GBT China Elastic Alloy
3J09 3J22
Available Suppliers
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...

Rfq.: sales@longhaisteel.com
  • Do you supply this 3J21?
  • List your company on S&G now? Join
  • Non-paying users only
Top