17-4 PH Stainless Steel

17-4 ph stainless steel alloy

17-4 ph Stainless Steel is a precipitation hardening martensitic stainless steel. Typical 17-4 ph usage is seen in applications requiring high strength and a modest level of corrosion resistance. Strength and toughness desired can be manipulated by temperate range in the heat treatment process.

Standards

  • UNS S17400
  • AMS 5643
  • ASTM A564
  • ASTM A693 Grade 630

Stainless Steel Applications

17 4 PH Composition(%)

  • Carbon 0.070 max
  • Chromium 15.00 - 17.50
  • Columbian + Tantalum 0.15 - 0.45
  • Copper 3.00 - 5.00
  • Manganese1.00 max
  • Nickel 3.00 - 5.00
  • Phosphorus 0.040 max
  • Silicon 1.00 max
  • Sulfur 0.030 max

Mechanical Properties

Material Type Condition Ultimate Tensile Strength (PSI) 0.2% Yield Strength (PSI) Elongation (% In 2in.) Reduction Of Area (%) Hardness Brinell Hardness Rockwell
17-4 PH H900 190,000 170,000 10 40 388 C40
  H1025 155,000 145,000 12 45 331 C35
  H1075 145,000 125,000 13 45 311 C32
  H1150 135,000 105,000 16 50 277 C28
  H1150-M 115,000 75,000 18 55 255 C24
  H1150-D 125,000 105,000 16 50 255 min - 311 max C24 - 33

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