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X55CrMnNiN20-8

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1.4871 1.4875
#X55CrMnNiN20-8

Description

France AFNOR X55CrMnNiN20-8 Valve Internal Combustion Engines steel (NF-EN 1009-1998) and X55CrMnNiN20-8 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: X55CrMnNiN20-8
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel X55CrMnNiN20-8 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
NC15Fe7TA
NC20TA
X45CrSi9-3
X40CrSiMo10-2
1.4731
1.4718
X33CrNiMnN23-8
1.4866
X53CrMnNiN21-9
1.4871

Chemical composition(mass fraction)(wt.%) of the X55CrMnNiN20-8

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) N(%)
0.50-0.60 Max 0.25 7.00-10.00 Max 0.035 Max 0.030 19.5-21.5 1.50-2.75 0.20-0.40

Mechanical Properties of steel grade X55CrMnNiN20-8

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)
195 (≥) 685 (≥) 41 22 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade X55CrMnNiN20-8

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 - -     0.12 -  
742 531 - 34.3 412   -  
528 - 22 34.2   331 143

Heat Treatment of steel grade X55CrMnNiN20-8

Heat treated : 1684°C - 1839°C

Technological Curves of steel grade X55CrMnNiN20-8

Cross Reference Table (Equivalent Grade) of X55CrMnNiN20-8

Grade Standard Country Application
X55CrMnNiN20-8 DIN Germany Valve steel
X55CrMnNiN20-8 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
ISO X55CrMnNiN20 8 ISO ISO ISO standard valve austenite steel
1.4871 1.4875
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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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