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X50CrMnNiNbN21-9

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1.4875 1.4882
#X50CrMnNiNbN21-9

Description

France AFNOR X50CrMnNiNbN21-9 Valve Internal Combustion Engines steel (NF-EN 1009-1998) and X50CrMnNiNbN21-9 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: X50CrMnNiNbN21-9
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel X50CrMnNiNbN21-9 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
X45CrSi9-3
X40CrSiMo10-2
1.4731
1.4718
X33CrNiMnN23-8
1.4866
X53CrMnNiN21-9
1.4871
X55CrMnNiN20-8
1.4875

Chemical composition(mass fraction)(wt.%) of the X50CrMnNiNbN21-9

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) W(%) N(%)
0.45-0.55 Max 0.45 8.00-10.0 Max 0.045 Max 0.030 20.0-22.0 3.50-5.50 0.80-1.50 0.40-0.60

Mechanical Properties of steel grade X50CrMnNiNbN21-9

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)
658 (≥) 546 (≥) 43 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade X50CrMnNiNbN21-9

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
42 - -     0.34 -  
592 993 - 31.3 313   -  
233 - 22 14.2   314 133

Heat Treatment of steel grade X50CrMnNiNbN21-9

Heat treated : 1552°C - 1844°C

Technological Curves of steel grade X50CrMnNiNbN21-9

Cross Reference Table (Equivalent Grade) of X50CrMnNiNbN21-9

Grade Standard Country Application
X50CrMnNiNbN21-9 DIN Germany Valve steel
X50CrMnNiNbN21-9 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
ISO X50CrMnNiNbN21 9 ISO ISO ISO standard valve austenite steel
EN X50CrMnNiNbN21-9 EN Euronorm Euronorm Stainless Steel
1.4875 1.4882
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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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