8740 Alloy Bar

8740 is a Nickel Chrome Moly produced for case hardening. It can often be found in aerospace applications, when wear resistance, toughness, and strength are needed.

Applications:

  • Aerospace Engine Parts
  • Aerospace Subassemblies
  • Aerospace Fasteners
Typical Chemical Properties
Minimum Properties Tensile Strength , psi 167,000
  Yield Strength, psi 152,000
  Elongation 15%
  Hardness bhn 229
Chemistry Carbon( C) .38 -.43%
  Chrome (Cr) 0.40-0.60 %
  Manganese (Mn) 0.75-1.00 %
  Molybdenum (Mo) 0.20 - .30%
  Nickel ( Ni) 0.40 -0.70%
  Phosphorus (P) .035% max
  Sulphur (S) 0.04% max
  Silicon (Si) 0.15- 0.30%

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