Material 1.4742

Heat-resisting steel

The material 1.4742 is heat reasistant ferritic steel. This material is resistant to scaling up to a maximum temperature of about 1000 °C / 1832°F

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1.4742

Standards

HDIN / EN US-Standard AFNOR UNI JIS request
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Material Category: Heat-resisting steel

Chemical Composition

C % Si % Mn % P % S % Al % Cr %
max 0,12 0,70 - 1,40 max 1,00 max 0,040 max 0,015 0,7000 - 1,2000 17,00 - 19,00

 

Mechanical Properties

DIN SEW 470 (02/1976)
Hitzebeständige Walz- und Schmiedestähle.
Zeitdehngrenze 1.000 h (Rp 1,0) Zeitdehngrenze 10.000 h (Rp 1,0) Zeitstandfestigkeit 1.000 h Zeitstandfestigkeit 10.000 Zeitstandfestigkeit 100.000 h bei Temperatur
~ 80 N/mm² ~ 50 N/mm² ~ 160 N/mm² ~ 100 N/mm² ~ 55 N/mm² ~ 500 ° C
~ 27,5 N/mm² ~ 17,5 N/mm² ~ 55 N/mm² ~ 35 N/mm² ~ 20 N/mm² ~ 600 ° C
~ 8,5 N/mm² ~ 4,7 N/mm² ~ 17 N/mm² ~ 9,5 N/mm² ~ 5 N/mm² ~ 700 ° C
~ 3,7 N/mm² ~ 2,1 N/mm² ~ 7,5 N/mm² ~ 4,3 N/mm² ~ 2,3 N/mm² ~ 800 ° C
~ 1,8 N/mm² ~ 1 N/mm² ~ 3,6 N/mm² ~ 1,9 N/mm² ~ 1 N/mm² ~ 900 ° C
Stäbe
geglüht 0,2% Dehngrenze (Rp0,2) Zugfestigkeit (Rm) Härte [HB] bei Temperatur
>= 25 mm >= 270 N/mm² 500 - 700 N/mm² <= 212 HB ~ 20 ° C
Flacherzeugnisse
geglüht Bruchdehnung (A5, 65) Probenlage bei Temperatur
0,5 - 3 mm >= 13 % längs ~ 20 ° C
0,5 - 3 mm >= 13 % quer ~ 20 ° C
>= 3 mm >= 15 % längs ~ 20 ° C
>= 3 mm >= 15 % quer ~ 20 ° C
Langerzeugnisse  
geglüht Bruchdehnung (A5, 65) bei Temperatur
<= 25 mm >= 15 % ~ 20 ° C

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