Chinese (Simplified)

34CrNiMo6 - 1.5% Nickel-Chromium-Molybdenum Through Hardening Steel

Surcharge Information

Due to the UK’s mostly commonly recognised surcharge mechanism no longer being openly published to the UK market we are unable to provide specific surcharge information on our website at this stage.

We are currently working with our suppliers to establish alternative mechanisms in order to provide a comprehensive and transparent view of global surcharge variations.

Look out for our improved surcharge pages appearing in the coming weeks.


34CrNiMo6 grade steel is a general purpose steel used for a wide range of engineering parts.

It is capable of being heat treated to produce a wide range of tensile strengths combined with good ductility and resistance to shock.

34CrNiMo6 has good hardenability, enabling it to be used for medium tensile strengths in fairly large sections, and possesses good resistance to wear. At low temperatures good impact values can also be obtained.

Bars are often supplied in the hardened and tempered condition with a tensile strength exceeding 1000 N/mm2 (depending on section size). Material is readily machinable so that the components can be put into service without the cost of further treatment.

Bars can also be supplied in the softened state which require hardening and tempering but give increased machinability.

Nickel-chromium-molybdenum steels benefit from a combination of alloying elements. Nickel imparts toughness; chromium depth of hardness; molybdenum inhibits temper brittleness and each element tends to reduce grain size.

Size Range

32mm - 860mm Dia

Typical applications of 34CrNiMo6 grade steel

  • Shafts
  • Connection rod bolts
  • Push rods
  • Studs
  • Pinion sleeves
  • Mandrel bars for tube manufacturing
  • Breech mechanism parts
  • High-duty engine connecting rods
  • High temperature bolts in oil refining and steam installations
  • Machine tool parts including:
    • Spindle gears
    • Power transmission gears
    • Slide cams

Share this page


Rolled or Forged


Black Bar or Bright Bar

Similar Grades

Grades for Potential Substitution (Greater)