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Material specification sheet Saarstahl - 21CrMoV5-11

Material No.: 1.8070 Former brand name: Atrix 231 International steel grades: BS: AFNOR: SAE:

Material group: Chemical composition:

(Typical analysis in %)

High temperature constructional steel

C 0,21 Si 0,35 Mn 0,40 Cr 1,35 Mo 1,10 V 0,30

Application:

High temperature constructional steel for srews, nuts and for turbine forgings

Hot forming and heat treatment:

Hardening: Tempering: Stress relieving:

900-950°C/oil, air 680-740°C min. 2h 580-650°C

930-950°C/water, oil 690-730°C -

Mechanical Properties:

Dimension [mm] 0,2% proof stress Rp0,2 [N/mm²] Tensile strength Rm [N/mm²] Fracture elongation A5 longitudinal [%] Fracture elongation A5 tangential [%] Fracture elongation A5 transverse [%] Notch impact energy ISO-V longitudinal [J] Notch impact energy ISO-V tangential [J] Notch impact energy ISO-V transverse [J] <250 min. 550 700 - 850 min. 17 min. 15 min. 13 min. 38 min. 24 min. 19 <750 min. 550 700 - 850 min. 16 min. 14 min. 12 min. 31 min. 24 min. 16

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