310H (Alloy 310H UNS S31009) Stainless Steel

310H (Alloy 310H UNS S31009) Stainless Steel

310H (Alloy 310H UNS S31009) Stainless Steel General Properties Alloy 310H (UNS S31009) has a carbon content restricted to exclude the lower end of the 310 range. This makes 310H the grade of choice for high temperature applications. This steel has good resistance to oxidation at temperatures of...
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310H (Alloy 310H UNS S31009) Stainless Steel


Grade 310H stainless steel is chiefly used in the heat treatment industry, and the chemical process industry.

  • Fans

  • Trays

  • Baskets

  • Rollers

  • Burner parts

  • Oven linings

  • Tube hangers

  • Retorts linings

  • Conveyor belts

  • Refractory supports

  • Containers for hot concentrated acids, ammonia, and sulfur dioxide

  • Used along with hot acetic and citric acid in the food processing industry.

Value Added Services:

  • Need a special length?

    • We can custom level 3/8″ thick x 72″ x 186″ from our plate line to reduce scrap

  • Polish plate inventory available

    • We supply #4, #6, and #8 mirror finish

    • Special polishes available

  • Plate processing

  • Dynamic water jet cutting

  • Plate shearing

  • Saw cutting

  • Plasma cutting and high quality plasma cutting

  • Machine cut rings and discs

Corrosion Resistance:

  • The high chromium content – intended to increase high temperature properties – also gives this grades good aqueous corrosion resistance.

  • In high temperature service, 310H exhibits good resistance to oxidising and carburising atmospheres.

Heat Resistance:

  • 310H has good resistance to oxidation in intermittent service in air at temperatures up to 1040°C and 1150°C in continuous service.

  • Good resistance to thermal fatigue and cyclic heating. Widely used where sulphur dioxide gas is encountered at elevated temperatures.

  • Continuous use in 425-860°C range not recommended due to carbide precipitation, if subsequent aqueous corrosion resistance is needed, but it often performs well in temperatures fluctuating above and below this range.

  • Prone to sigma phase embrittlement in the temperature range 650 – 900°C.

  • Grade 310H is generally used at temperatures starting from about 800 or 900°C – above the temperatures at which 304H and 321 are effective

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