665M17 - 1.7% Nickel-Molybdenum Case Hardening Steel
Surcharge Information
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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.
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PRODUCTION METHOD
Rolled or Forged
FINISHES
Black Bar or Bright Bar