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Case Hardening steel grade 16MnCr5 | SAE 8620

16MnCr5 | 8620 Engineering steel

16MnCr5 is a low alloy case hardening steel. After carburizing/carbonitriding and hardening it produces a hard wear resistant case with tough core, with good resistance to shock. The ‘as rolled and quenched’ surface hardness usually ranges from 37-43HRc.

Both 16MnCr5 and 20MnCr5 steel grades demonstrates reasonably high hardenability, and excellent forgeability and can be used as an alternative to more costly alloyed case hardening steels.

Grade 16MnCr5 and 20MnCr5 steels are case hardening steels used extensively for both carburising and carbonitriding, demonstrating reasonably high hardenability and excellent forgeability. It has become an accepted alternative to SAE 8620 steel in some cases.

Steel stock range

High Peak Steels stock 16MnCr5 in black steel round bar.

Associated standards

UK Standard 16MnCr5 | European Grades 21NiCrMo2-2 | SAE/AISI 8620

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Steel stock grades

Order 16MnCr5 | SAE 8620 steel

Black round

16MnCr5 | SAE 8620 Black steel

ProductMin sizeMax size
codes-round230mm dia300mm dia
codes-flat2
codes-square2
codes-hex2

16MnCr5 | SAE 8620 Chemical Composition

CSiMnSPCrNiMo
Min0.180.150.70.40.40.15
Max0.230.350.90.030.040.60.70.25

16MnCr5 | SAE 8620 Mechanicals

Yield
N/mm2
0.2% proof
N/mm2
UTS (Rm)
N/mm2
Elong (A)
%
Red of Area (Z)
%
Hardness
HB
Normalised (min)21543021126
Normalised (max)
Drawn (min)42053012179
Drawn (max)

Typical Applications of 16MnCr5 | SAE 8620 steel

  • SHAFTS
  • PINS
  • PINIONS
  • GEARS
  • CAMSHAFTS
  • CLUTCH PLATES
  • DRIVE WHEELS