Steel grade EN34

EN34 (665M17) Engineering steel

EN34 (665M17) is a 2% nickel, molybdenum case hardening steel grade. EN34 (665M17) is suitable for applications requiring wear resistance and shock resistance.

It offers good core strength and impact properties with little temper brittleness. Combining good core strength, toughness and fatigue resistance EN34 (665M17) can be case hardened up to 60HRc.

Steel stock range

High Peak Steels stock EN34 (665M17) in black steel round bar.

Associated standards

UK Standard EN34 | SAE/AISI 4615

Call now on 01457 866911

to talk to one of our advisors for more information, or email us at sales@highpeaksteels.com

EN34 (665M17) black steel

ProductMin sizeMax size
codes-round250mm dia200mm dia
codes-flat2
codes-square2
codes-hex2

EN34 (665M17) Chemical Composition

 CSiMnSPCrNiMo
Min0.140.10.351.50.2
Max0.20.40.750.040.0350.320.3

EN34 (665M17) Mechanicals

 Yield
N/mm2
0.2% proof
N/mm2
UTS (Rm)
N/mm2
Elong (A)
%
Red of Area (Z)
%
Hardness
HB
Impact Test (KV)
J
Normalised207
Quenched & Tempered770mm max12

Typical Applications of EN34 steel

  • AUTOMOTIVE PARTS
  • CASE HARDEN PRODUCTS
  • PINIONS
  • GEARS
  • TRACK ROD PINS
  • HEAVY DUTY ENGINEERING COMPONENTS
  • TRANSMISSION COMPONENTS