Material 1.4939

High-temperature resisting steel and alloy

The material 1.4939 is a highly heat-resistant maartensitic steel. This steel can be used up to a maximum temperature of about 560 °C / 1040 °F. Typical application for 1.4939 include highly stressed bolts in turbine.

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1.4939

Standards

HDIN / EN US-Standard AFNOR UNI JIS request
X12CrNiMo12 X12CrNiMoN12 UNS S64152 request

Material Category: High-temperature resisting steel and alloy

Chemical Composition

C % Si % Mn % P % S % Cr % Mo % N % Ni %  V %
0,08 - 0,13 max 0,35 0,50 - 0,90 max 0,025 max 0,020 11,00 - 12,50 1,50 - 2,00 0,020 - 0,040 2,00 - 3,00 0,25 - 0,40

 

Mechanical Properties

vergütet
0,2% Dehngrenze
(Rp0,2)		 Zugfestigkeit
(Rm)		 Bruchdehnung
(A 5,65)		 Kerbschlagarbeit
(DVM)		 Zeitstandfestigkeit
10.000 h		 Zeitstandfestigkeit
100.000 h		 Warmfestigkeit bei Temperatur
            ~ 580 °C  
>= 800 N/mm² 950 - 1.150 N/mm² >= 13 % >= 55 Joule       ~ 20 °C
>= 800 N/mm²             ~ 200 °C
>= 770 N/mm²             ~ 300 °C
>= 700 N/mm²             ~ 400 °C
>= 590 N/mm²             ~ 500 °C
>= 470 N/mm²       ~ 145 N/mm² ~ 102 N/mm²   ~ 550 °C
>= 350 N/mm²       ~ 98 N/mm² ~ 49 N/mm²   ~ 600 °C

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