665M17 / EN34
1.7% Nickel-Molybdenum Case Hardening Steel
Surcharge
£1156.94 per tonne
Surcharge Price History for 665M17 / EN34
| FEB 22 | MAY 22 | AUG 22 | NOV 22 | TODAY |
|---|---|---|---|---|
| £767.18 | £1,213.73 | £980.23 | £898.14 | £1,156.94 |
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.