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1.4870

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X53CrMnNiNbN21-9 X85CrMoV18-2
#1.4870

Description

France AFNOR 1.4870 Valve Internal Combustion Engines steel (NF-EN 1009-1998) and 1.4870 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: 1.4870
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel 1.4870 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
1.4718
X33CrNiMnN23-8
1.4866
X53CrMnNiN21-9
1.4871
X55CrMnNiN20-8
1.4875
X50CrMnNiNbN21-9
1.4882
X53CrMnNiNbN21-9

Chemical composition(mass fraction)(wt.%) of the 1.4870

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) N(%) Other(%)
0.48-0.58 Max 0.45 8.00-10.0 Max 0.045 Max 0.030 20.0-22.0 3.25-4.50 0.38-0.50 C+N Max 0.90

Mechanical Properties of steel grade 1.4870

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)
458 (≥) 746 (≥) 14 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 1.4870

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
13 - -     0.34 -  
619 595 - 33.3 343   -  
851 - 21 23.2   144 442

Heat Treatment of steel grade 1.4870

Heat treated : 1673°C - 1521°C

Technological Curves of steel grade 1.4870

Cross Reference Table (Equivalent Grade) of 1.4870

Grade Standard Country Application
1.4870 DIN Germany Valve steel
1.4870 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
X53CrMnNiNbN21-9 X85CrMoV18-2
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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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