316/316H is a high carbon modification of Alloy 316 developed for use in elevated temperature service. The corrosion resistance of Alloy 316H is comparable to Alloy 316/316L and is superior to Alloy 304/304L in moderately corrosive environments. It is often used in process streams containing chlorides or halides. The alloy resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. It also resists corrosion in polluted marine conditions.

UNS: S31600/S31609
Stock Sizes: 1/4” – 1/2” OD


  • Seamless Tube: ASTM A213/A269
  • NACE MR0175/MR0103

Available Processing:

  • Cold Worked and Bright Annealed

Common Testing: Eddy Current, Flare, Flattening, Positive Material Identification

Chemical Composition (%)

Iron (Fe)Balance
Chromium (Cr)16-18%
Nickel (Ni)11-14%
Molybdenum (Mo)2-3%
Manganese (Mn)2% Max
Silicon (Si)1% Max
Carbon (C)0.04-0.08%
Sulfur (S)0.030% Max
Phosphorus (P)0.045% Max

Physical Properties

Density (lb/in3)0.285
Elongation (min %)35
Minimum Yield (psi)30,000
Minimum Tensile (psi)75,000
Max Hardness (HRB)90