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Case Hardening steel grade 665M17

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

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Steel stock grades

Order EN34 | 665M17 steel

Enquire about EN34

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