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1.4870

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X33CrNiMnN23-8 X53CrMnNiNbN21-9
#1.4870

Description

Germany DIN 1.4870 Valve steel and 1.4870 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 1.4870
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 1.4870 DIN Germany Valve steel
1.4731
X80CrSiMoW15-2
1.4732
1.4732
X85CrMoV18-2
1.4748
1.4785
X60CrMnMoVNbN21-10
1.4866
X33CrNiMnN23-8

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 8.00-10.00 Max 0.045 Max 0.030 20.00-22.00 3.25-4.50 0.38-0.50 Nb+Ta 2.00-3.00,C+NMix 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)
986 (≥) 488 (≥) 22 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

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
44 - -     0.24 -  
545 292 - 32.3 121   -  
629 - 32 32.2   441 321

Heat Treatment of steel grade 1.4870

Heat treated : 1245°C - 1623°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)
X33CrNiMnN23-8 X53CrMnNiNbN21-9
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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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