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R04220

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K44220 S42225
#422

Description

USA AISI R04220 Specialsteel Niobium (columbium) RRR Grade and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: R04220
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel R04220 Precipitation-Hardening AISI USA Niobium (columbium) RRR Grade

Chemical composition(mass fraction)(wt.%) of the R04220

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo W V
≤0.22 ≤0.40 ≤0.75 ≤ ≥ ≤ ≥ ≤0.75 ≤12.50 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤ ≥ ≤1.00 ≤1.00 ≤0.22

Mechanical Properties of steel grade R04220

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)
884 (≥) 965 (≥) 32 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade R04220

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
32 - -     0.31 -  
646 459 - 13.3 311   -  
511 - 22 42.2   144 314

Heat Treatment of steel grade R04220

Heat treated : 1844°C - 1328°C

Technological Curves of steel grade R04220

Cross Reference Table (Equivalent Grade) of R04220

Grade Standard Country Application
1.5422
1.5422
S42200
S42225
S42200
S42200
422
422M(C)
422M
S42200
SAE 4422
UNS G44220
ASTM 4422
UNS G44220
AMS 6422E
UNS K11422
UNS J94224
UNS J42215
UNS J42220
422(S42200)
K44220 S42225
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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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