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15Cr-5Ni Project 70®+

UNS #S15500

15Cr-5Ni Project 70®+ Stainless is an optimized 15Cr-5Ni stainless designed to provide superior machinability with the ability to attain average machining speed improvements of 50% and higher while meeting all aspects of AMS 5659. The alloy may be considered for all usual 15-5 applications.

Type Analysis

  • Carbon (Maximum) 0.07
  • Phosphorus (Maximum) 0.03
  • Silicon (Maximum) 1
  • Nickel (Nominal) 3.50-5.50
  • Manganese (Maximum) 1
  • Sulfur (Maximum) 0.015
  • Chromium (Nominal) 14.00-15.50
  • Molybdenum (Nominal) 0.5
  • Iron (Nominal) Balance
  • Copper (Nominal) 2.50-4.50
  • Columbium/Niobium 0.15-0.45
  • Tantalum 0.05

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Applications

Applicable Specifications

  • AMS 5659
  • ASTM A705 [Forgings (UNS S15500
  • XM-12)]
  • ASTM A564 (Grade XM-12)
  • ASTM F899

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Technical Information

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