British BS 970 1955
British BS 970
0.15 / 0.25
General purpose grade, suitable for use in many engineering applications, case hardening and welding.
0.13 / 0.18
General purpose engineering, suitable for case hardening and welding.
220M07 / 230M07
A low carbon, free cutting steel that is highly machinable with consistent properties giving a good surface finish.
220M07 PB 230M07 PB
A low carbon, free cutting mild steel with added lead that improves machining with very little effect on mechanical properties. Unsuitable for welding.
080A40 / 080M40
0.40 / 0.45
Medium tensile strength. Small sizes suitable for induction hardening.
0.40 / 0.45
A free cutting version of 080M40 medium carbon steel, offering improved machinability.
British BS 970:1955
British BS 970:1991
Alloy Element (%)
A manganese molybdenum steel with good ductile and mechanical strength and the ability to withstand shock loading.
As En16 but more suitable for repetition machining. Welding not recommended.
708M40T / 709M40T
A 1% typical chromium molybdenum steel with good ductile and mechanical strength. Suitable for higher strength applications where resistance to shock is required.
A nickel chrome molybdenum steel with high strength and toughness. Good ductile and tensile strength with good shock and wear resistance properties.
A nickel chrome case hardening steel. Can be hardened to provide a very hard surface with a strong, tough core.
A low alloy case hardening steel which is supplied to American standards.