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J21890

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J12072 J11872
#J21890

Description

USA UNS J21890 Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service and J21890 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: J21890
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy J21890 UNS USA Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
WC9
WC11
C5
C12
C12A
CA15
J12524
J12082
J22000
J12072

Chemical composition(mass fraction)(wt.%) of the J21890

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Al(%)
0.05-0.18 ≤0.60 0.40-0.70 0.04 0.045 2.00-2.75 － 0.90-1.20 ≤0.01

Mechanical Properties of steel grade J21890

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)
579 (≥) 458 (≥) 43 31 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade J21890

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 - -     0.32 -  
481 466 - 42.3 441   -  
654 - 21 32.2   431 131

Heat Treatment of steel grade J21890

Heat treated : 1754°C - 1876°C

Technological Curves of steel grade J21890

Cross Reference Table (Equivalent Grade) of J21890

Grade Standard Country Application
UNS J21890 AISI USA
J21890 UNS USA Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
J21890 UNS USA Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
J12072 J11872
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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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