PH stainless steel PH13-8Mo

PH stainless steel XM-13 丨PH13-8Mo

Stainless steel13-8MoPH demonstrates exceptional strength and hardness, coupled with robust resistance to general corrosion and stress-corrosion cracking. Moreover, the alloy showcases commendable ductility and toughness in large sections, both longitudinally and transversely. These outstanding properties result from meticulous control over chemical composition and microstructure, along with specialized melting techniques that reduce impurities and minimize segregation.

PH stainless steel XM-13 / PH13-8Mo / UNS S13800/ W.Nr 1.4534

Applications of stainless steel PH13-8Mo:

Stainless steel PH13-8Mo has been used for valve parts, fittings, cold-headed and machined fasteners, shafts, landing gear parts, pins, lockwashers, aircraft components, nuclear reactor components and petrochemical applications requiring resistance to stress-corrosion cracking.

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 5864, AMS 5629, ASTM A 564, ASME SA564, ASTM A693, ASME SA693, ASTM A 705, ASME SA705.

Chemical Composition:
  • Chromium (Cr): 12.25-13.25%
  • Nickel (Ni): 7.5-8.5%
  • Molybdenum (Mo): 2.00-2.50%
  • Aluminum (Al): 0.90-1.35%
  • Carbon (C): 0.05% max
  • Manganese (Mn): 0.1% max
  • Silicon (Si): 0.1% max
  • Nitrogen (N): 0.01% max
  • Sulfur (S): 0.008% max
  • Phosphorus (P): 0.01% max

Physical Constants and Thermal Properties

  • Density: 4.48 g/cm³, Imperial: 0.28 lb/in³
  • Melting Point: 1,404°C – 1,415°C, 2,560°F – 2,590°F
  • Specific Heat Capacity: 0.50 J/g°C, 0.12 Btu/lb°F
  • Thermal Conductivity: 13.8 W/m°C, 8 Btu-ft/hr/ft²/°F

Mechanical Property:

The mechanical properties of 13-8MoPH stainless steel vary depending on the heat treatment condition. For example, in the H950 condition, it has an ultimate tensile strength of 220 ksi, a 0.2% yield strength of 205 ksi, an elongation of 10% in 2D, a reduction of area of 45%, and a Rockwell C hardness of 45.

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