665M17 / EN34

1.7% Nickel-Molybdenum Case Hardening Steel

Surcharge

£898.14 per tonne

Surcharge Price History for 665M17 / EN34

NOV 21 FEB 22 MAY 22 AUG 22 TODAY
£742.33 £767.18 £1,213.73 £980.23 £898.14

Product Method

Rolled or Forged

Finishes

Black Bar or Bright Bar

Description

665M17 grade steel is a medium alloy nickel-molybdenum case-hardening steel which may be carburised and hardened to produce a hard wear resistant case developing a core strength of 770N/mm.

It has good impact properties, very good resistance to stock and freedom from temper brittleness.

Size Range

60mm - 250mm Dia

Typical applications of 665M17 grade steel

  • Gears
  • Shafts
  • Pinions
  • Tappets
  • Valve rockers
  • Collets
  • Track pins
  • Steering balls and worms
  • Transmission components
  • Breech mechanisms
  • Small arms parts

665M17 steel is still often referred to as EN34 steel - its equivalent grade under the previous BS 970: 1955 standard.

Equivalent Grades

BS 970: 1955
EN34
£123

Grades for Potential Substitution (Greater)

BS 970
655M13 / EN36
£1319.71

Services

Stock Availability

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