Material 1.4903

High-temperature resisting steel and alloy

The material 1.4903 is a high-temperature steel. This steel can be used up to a maximum temperature of approx. 650 C°. A typical area of application for 1.4903 is power plant construction. Valve housings are often made of 1.4903.

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1.4903

Standards

HDIN / EN US-Standard AFNOR UNI JIS request
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Material Category: High-temperature resisting steel and alloy

Chemical Composition

C % Si %  Mn %  P % S % Al % Cr % Cu %  Mo % N %  Nb % Ni % V % Zr %
0,08 - 0,12 max 0,50 0,30 - 0,60 max 0,025 max 0,015 0,0400 8,00 - 9,50 max 0,30 0,85 - 1,05 0,030 - 0,070 0,060 - 0,100 max 0,40 0,18 - 0,25 max 0,010

Mechanical Properties

vergütet
Streckgrenze (Re) Zugfestigkeit (Rm) Bruchdehnung (A5, 65) Zeitstandfestigkeit 10.000 h Zeitstandfestigkeit 100.000 h bei Temperatur
>= 450 N/mm² 620 - 850 N/mm² >= 20 %     ~ 20 ° C
>= 410 N/mm²         ~ 100 ° C
>= 380 N/mm²         ~ 200 ° C
>= 360 N/mm²         ~ 300 ° C
>= 340 N/mm²         ~ 400 ° C
>= 300 N/mm²         ~ 500 ° C
>= 270 N/mm²     ~ 199 N/mm² ~ 162 N/mm² ~ 550 ° C
>= 215 N/mm²     ~ 122 N/mm² ~ 90 N/mm² ~ 600 ° C
      ~ 70 N/mm² ~ 44 N/mm² ~ 650 ° C

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