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ISO 898 10.9


ISO 898 10.9


Carbon Steel with Additives quenched and tempered

Element Min Max
C (carbon) 0.25% 0.55%
P (Phosphorus) 0.025%
S (Sulphur) 0.025%
B (Boron) 0.003%

Mechanical Properties Min Max
Tensile strength 1040 MPa
0.2% Proof Stress 940 MPa
Elongation 9%
Reduction of Area 48%
Hardness (Brinell) 316 (HB) 375 (HB)
Hardness (Rockwell) 39 HRC 44 HRC
Hardness (Vickers) 320 (HV) 380 (HV)


General Bolting

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