665M17 / EN34

1.7% Nickel-Molybdenum Case Hardening Steel

Surcharge

£855.77 per tonne

Surcharge Price History for 665M17 / EN34

DEC 22 MAR 23 JUN 23 SEP 23 TODAY
£938.87 £1,167.76 £1,041.43 £872.60 £855.77

The surcharge data provided is based on the information available to us and represents an average of the surcharge mechanisms taken from various global steel producers. It is intended to only provide an indication of market movements and does not necessarily reflect the specific surcharges applied to individual material batches.

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
£1178.58

Services

Stock Availability

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