665M17/EN34 - 1.7% Nickel-Molybdenum Case Hardening Steel
The surcharge information provided is a guide to market scrap and alloy surcharges and is an averaged value taken from various suppliers’ surcharge mechanisms and isn’t therefore necessarily the surcharge applied to all material supplied. Please contact us if you want any further information.
Surcharge Price History for 665M17/EN34
| JUL 20 | OCT 20 | JAN 21 | APR 21 | TODAY |
|---|---|---|---|---|
| £392.95 | £399.78 | £487.91 | £609.98 | £720.29 |
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