ASTM A995 STANDARD

Standard Specification for Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts

Grade Heat Treatment
  • 1B Heat to 1900°F [1040°C] minimum, hold for sufficient time to heat
  • casting uniformly to temperature, quench in water or rapid cool by other means.
  • 2A Heat to 2050°F [1120°C] minimum, hold for sufficient time to heat
  • casting uniformly to temperature, quench in water or rapid cool by other means.
  • 3A Heat to 1950°F [1070°C] minimum, hold for sufficient time to heat
  • casting uniformly to temperature, quench in water or rapid cool by other means.
  • 4A Heat to 2050°F [1120°C] minimum for sufficient time to heat casting
  • uniformly to temperature and water quench, or the casting may be furnace cooled to 1850°F [1010°C] minimum, hold for 15 min minimum and then water quench. A rapid cool by other means may be employed in lieu of water quench.
  • 5A Heat to 2050°F [1120°C] minimum, hold for sufficient time to heat
  • casting to temperature, furnace cool to 191 0°F [1 045°C] minimum, quench in water or rapid cool by other means.
  • 6A Heat to 2010°F [1100°C] minimum, hold for sufficient time to heat
  • casting uniformly to temperature, quench in water or cool rapidly by other means.

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