• High Peak Steels Ltd, Brookfield Ind Est, Peakdale Road, Glossop, Derbyshire, SK13 6LQ

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BLACK 722M24

Description

A nitriding steel with chromium and molybdenum which is normally supplied in the ‘T’ condition (850 – 1000 n/mm 2 tensile strength) After nitriding the material develops a hard wear resisitant case upto 65 HRc rockwell. It then has excellent resistance to shock and fatigue. Niteriding the material gives no significant loss of surface hardness and is scale free with ninimum distortion.

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Products & Sizes

ProductMin sizeMax size
codes-round225mm dia300mm (forged bar above 300mm dia)
codes-flat2
codes-square2
codes-hex2

Associated Standards

StandardCode
UK StandardEN40B
European Grades32CrMo12
Werkstoff
1.7361
SAE/AISI

Chemical Composition

 CSiMnSPCrNiMo
Min0.20.10.452.80.4
Max0.280.350.70.040.0353.30.40.6

 

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
Annealed (min)
Annealed (max)255
Quenched & Tempered to condition T (min)
6808501324850
Quenched & Tempered to condition T (max)
1000302
Quenched & Tempered to condition U (min)
7559251226942
Quenched & Tempered to condition U (max)
1075331

Typical Applications

  • Aircraft & Aerospace applications
  • Gears
  • Pins
  • Spindles
  • Crankshafts
  • Plastic Moulds
  • Drills
  • Guides
UA-23101739-40