S31009 (310H) Pipe & Fittings

A high carbon modification of 310 developed for enhanced creep resistance.

Alloy 310 (UNS S31000) is an austenitic stainless steel developed for use in high temperature corrosion resistant applications. The alloy resists oxidation up to 2010°F (1100°C) under mildly cyclic conditions.

Because of its high chromium and moderate nickel content, Alloy 310 is resistant to sulfidation and can also be used in moderately carburizing atmospheres.

310H has a resistance to corrosion in high temperature environments that exceeds that of many other stainless steel alloys. It finds use in the heat treatment industry, including the containment of concentrated acids. 310H is often exposed to sulfur dioxide environments and displays a high level of resistance to negative effects, as well as those from oxidation at high temperatures. However, it does not display the same resistance against aqueous corrosion. In wet environments, its high carbon content works as a limitation.

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Properties

Chemical Composition

Applications

  • Cryogenic components
  • Food processing
  • Furnaces — burners, doors, fans, piping and recuperators
  • Fluidized bed furnaces — coal combustors, grids, piping, wind boxes
  • Ore processing/Steel plants — smelter and steel melting equipment, continuous casting equipment
  • Petroleum refining — catalytic recovery systems, flares, recuperators, tube hangers
  • Power generation — coal gasifier internals, pulverized coal burners, tube hangers
  • Sintering/Cement plants — burners, burner shields, feeding and discharging systems, wind boxes
  • Thermal processing — annealing covers and boxes, burner grids, doors, fans, muffles and retorts, recuperators, walking beams

Characteristics

  • Excellent corrosion resistance
  • Retains superior strength in elevated temperatures and hold good toughness at sub-zero temperatures
  • Resistant to sulfidation and can also be used in moderately carburizing atmospheres

Additional Information

Heat Treatment

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