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709M40 - 1% Chromium-Molybdenum Through Hardening Steel

Surcharge

Both Scrap and most alloys saw a small increase going into April, meaning surcharges for the majority of grades increased slightly.

Nickel has been rising steadily (albeit not significantly) in recent weeks and therefore we would expect to see this filter through to the surcharges in the coming weeks.

Surcharge information as listed via Liberty Speciality Steels where possible, other based on mean chemical analysis for the given grade.

info
£334.18 per tonne

Surcharge Price History for 709M40

APR 18 JUL 18 OCT 18 JAN 19 TODAY
£327.95 £347.00 £347.21 £375.30 £334.18

Description

709M40 grade steel is a versatile low alloy steel that possesses good tensile and shock resistance properties combined with ductility.

Its resistance to wear can be considerably increased by flame hardening and it is also suitable for nitriding (for maximum wear and abrasion resistance).

Bars are often supplied in the hardened and tempered condition with a tensile strength range of 850-1000N/mm². The bars are readily machinable so that the components can be put into service without the cost of further treatment.

Bars can also be supplied in the softened state which require hardening and tempering, but will give increased machinability.

Typical applications of 709M40 grade steel

  • Axle shafts
  • Crankshafts
  • Gears
  • Induction hardened pins

709M40 steel is still often referred to as EN19 steel - its equivalent grade under the previous BS 970: 1955 standard.

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PRODUCTION METHOD

Rolled or Forged

FINISHES

Black Bar or Bright Bar