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Description

Germany DIN 1.4988 The high-temperature and high-strength steel and 1.4988 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 1.4988
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 1.4988 DIN Germany The high-temperature and high-strength steel
1.4980
X8CrNiMoNb16-16
1.4981
1.4984
2.4982
NiCr20CoMo
NiCr18Co
NiCr18Co
1.4986
X7(8)CrNiMoBNb16-16

Chemical composition(mass fraction)(wt.%) of the 1.4988

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) V(%) N(%) Other(%)
0.04-0.10 0.04-0.10 Max 1.50 Max 1.50 Max 1.50 15.5-17.5 12.5-14.5 1.10-1.50 0.60-0.85 0.10 10×C%+0.4Max Nb+TaMax 1.20

Mechanical Properties of steel grade 1.4988

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)
679 (≥) 995 (≥) 24 14 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade 1.4988

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
41 - -     0.41 -  
441 971 - 22.3 311   -  
425 - 32 22.2   332 444

Heat Treatment of steel grade 1.4988

Heat treated : 1299°C - 1529°C

Technological Curves of steel grade 1.4988

Cross Reference Table (Equivalent Grade) of 1.4988

Grade Standard Country Application
1.4988 DIN Germany The high-temperature and high-strength steel

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