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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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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