PH stainless steel PH15-7Mo

PH stainless steel 632丨PH15-7Mo

Stainless Steel PH15-7Mo is a semi-austenitic precipitation-hardening stainless steel renowned for its remarkable combination of high strength, hardness, and corrosion resistance, alongside minimal distortion during heat treatment. It exhibits excellent formability in the annealed state and achieves an optimal balance of properties through straightforward heat treatments.

PH stainless steel 632 / pH15-7Mo / UNS S15700 / W.Nr 1.4532

Applications of stainless steel 632:

  • Springs
  • Retaining rings
  • Diaphragms
  • Aircraft bulkheads
  • Welded and brazed honeycomb paneling
  • Aircraft components

Normal product forms:

  • Sheets, bars, coils, and wires.
  • Round, square, hex (A/F), rectangle, billet, ingot, forged, etc.
  • Forged hollow bar, forged ring, forging blocks, forging shaft, forging discs & circles.

Specifications/Standard: AMS 5520, ASTM A693, etc.

Chemical Composition:
  • Chromium (Cr): 14.00-16.00
  • Nickel (Ni): 6.50-7.75
  • Molybdenum (Mo): 2.00-3.00
  • Aluminum (Al): 0.75-1.50
  • Iron (Fe): Balance
  • Carbon (C): 0.09 max
  • Manganese (Mn): 1.00 max
  • Silicon (Si): 1.00 max
  • Phosphorus (P): 0.040 max
  • Sulfur (S): 0.040 max

Physical Constants and Thermal Properties

  • Density: 0.28 lbs/in³, 7.80 g/cm³
  • Thermal Conductivity at 200 °F (93 °C): 112 BTU/hr/ft2/in/°F, 16.2 W/m·K
  • Mean Coefficient of Thermal Expansion: 8.0 x 10·6 in/in/° F (14.4 µm/m·K) at 70 – 200 °F (21 – 93 °C), 8.5 x 10·6 (15.3) at 70 – 600 °F (21 – 315 °C), 8.9 x 10·6 (16.0) at 70 – 800 °F (21 – 427 °C)
  • Modulus of Elasticity: 29 x 10^3 ksi (200 x 10^3 MPa) in tension

Mechanical Property:

  • Ultimate Tensile Strength: 150 KSI max (1035 MPa max) in annealed condition
  • Yield Strength (0.2% offset): 55 KSI max (380 MPa max) in annealed condition
  • Elongation: 20% min in annealed condition
  • Hardness: Rb 92 max in annealed condition

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