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Description

Germany DIN 1.4704 Valve steel and 1.4704 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 1.4704
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 1.4704 DIN Germany Valve steel
X8CrNiTi18-10/X12CrNiTi18-9
1.4878
1.4885
X12CrNiMoNb20-15
X8SiTi4
1.5310
X50NiCrWV13-13
1.3817
X4MnCr18
45SiCr16-11/X45SiC

Chemical composition(mass fraction)(wt.%) of the 1.4704

C(%) Si(%) Mn(%) P(%) S(%) Cr(%)
0.40-0.50 3.50-4.50 Max 1.00 Max 0.045 Max 0.030 2.50-3.00

Mechanical Properties of steel grade 1.4704

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)
635 (≥) 866 (≥) 33 11 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade 1.4704

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 - -     0.31 -  
425 234 - 42.3 443   -  
734 - 41 22.2   342 334

Heat Treatment of steel grade 1.4704

Heat treated : 1392°C - 1254°C

Technological Curves of steel grade 1.4704

Cross Reference Table (Equivalent Grade) of 1.4704

Grade Standard Country Application
1.4704 DIN Germany Valve steel

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