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18CrNi8 (High grade steel)

Description

General

18CrNi8: Ferro (Fe) rest, Carbon (C) 0.15-0.20, Chromium (Cr) 1.80-2.10, Nickel (Ni) 1.80-2.10, Silicon (Si) 0.17-0.37, Manganese (Mn) 0.50-0.80, Sulphur (S)

Properties

Chemical properties

Minimum value Maximum value Unit Sources
%
%

Electrical properties

Minimum value Maximum value Unit Sources
kV/mm
%
-0.45 -0.45 V
Ohm.mm²/m

Manufacturing Properties

Minimum value Maximum value Unit Sources

Mechanical properties

Minimum value Maximum value Unit Sources
MPa
MPa
MPa
7850 7850 kg/m³
7 7 %
MPa
J/cm
MPa
1200 1450 MPa
MPa
800 800 MPa
210000 210000 MPa

Optical properties

Minimum value Maximum value Unit Sources

Thermal properties

Minimum value Maximum value Unit Sources
°C
1540 1540 °C
°C
500 500 J/kg.K
W/m.K
11.8 11.8 e-6/K

Environment

9085 mPt
0.17 Pt
2580 mELU
4.96 MJ/MJ
31.3 MJ
3.49 kg
0.01 kg
Environmental data for the production of 1 kg crude steel from SPIN. Transport is added. The coal comes for 65% from Canada, 23% Australia, 12% from the EEC. Iron ore comes for 37% from Brasil, 21% Australia, 31% Europe and the remaining 11% from elsewhere. Lime is imported from Belgium. Metallic alloy elements are assumed to be added in the required percetages. For details on the winning and refining of the elements see [Metallic Elements]. The production and emission data are for 1989.
Idemat 2003, Design for Sustainability, Delft University of Technology

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