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21-4N + Nb + W

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21-4N A 214
#214

Description

USA UNS SAE J 775 (2004), 21-4N + Nb + W Specialsteel Engine poppet valve information report and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 21-4N + Nb + W
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 21-4N + Nb + W Precipitation-Hardening UNS USA Engine poppet valve information report

Chemical composition(mass fraction)(wt.%) of the 21-4N + Nb + W

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo B Zr
≤0.05 ≤0.20 ≤0.50 ≤ ≥ ≤ ≥ ≤remaining 15.00 -17.00 4.00 -5.00 ≤ ≥ ≤0.50 2.00 -4.00 ≤ ≥ ≤0.50 ≤0.006 ≤0.05

Mechanical Properties of steel grade 21-4N + Nb + W

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)
285 (≥) 728 (≥) 21 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade 21-4N + Nb + W

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
14 - -     0.24 -  
738 566 - 11.3 134   -  
732 - 31 41.2   121 424

Heat Treatment of steel grade 21-4N + Nb + W

Heat treated : 1763°C - 1756°C

Technological Curves of steel grade 21-4N + Nb + W

Cross Reference Table (Equivalent Grade) of 21-4N + Nb + W

Grade Standard Country Application
S21400
S21460
214
214
S21400
S21400
UNS G12144
UNS G12144
UNS W21418
UNS W74214
UNS K21451
UNS K21450
UNS K21485
UNS W82141
SS14:2140
SS14:2140
SS14:2140

Relevant standard of 21-4N + Nb + W

SAE J 775 (2004) Engine poppet valve information report SAE-J-775-(2004).pdf
21-4N A 214
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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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