Alloy 316/316L/316H

UNS S31603


Your Alloy 316L Stainless Steel Distributor

The chromium-nickel-molybdenum composition of alloy 316/316L stainless steel allows it to withstand extreme conditions. In almost any environment, alloy 316L pipes, valves, and bars resist chemical corrosion and chemical pitting. If you need a metal alloy with these features for equipment parts or welding applications, James Duva Inc. can help you make the right alloy choice for your project.

Design Features of Alloy 316/316L

Each alloy 316L pipe, pipe fitting, bar, and valve we make is resistant to corrosion. This alloy remains strong even after repeated exposure to corrosive chemicals.

Other special characteristics of alloy 316L include the following:

  • Resistant to carbide precipitation
  • Resistant to pitting from chloride-containing solutions
  • Easy to weld (at a max temperature of 1650 degrees Fahrenheit)
  • Non-magnetic and non-hardenable

You can heat and cool alloy 316/316L to extreme temperatures for welding or other purposes. This heating and cooling will have no effect on its chemical resistance. An alloy 316L pipe, pipe fitting, bar, or other part is optimal for welding due to its lower carbon content.

Applications of Alloy 316/316L
The features of alloy 316L make it an ideal metal for multiple environments. If you need a metal that resists damage from chemicals or at high and low temperatures, choose alloy 316L for the best results. A few specific industries that use alloy 316L are:

  • Nuclear plants
  • Pharmaceutical processing
  • Textile industries
  • Chemical processing plants
  • Rubber factories
  • Plastic factories
  • Petroleum refining

Work With James Duva Inc.
At James Duva Inc., we help companies with all their specialty alloy needs. Alloy 316/316L comes in pipes, pipe fittings, flanges, valves, tubing, and bars. Give us a call at 908.526.1222 to place an order or to see if the alloy 316L pipe is right for you. We’ve helped hundreds of businesses find the perfect metal.

Typical Applications

  • Nuclear, chemical processing, Rubber, plastics, pulp/paper, pharmaceutical and textile industries, heat exchangers, condensers and evaporators

Design Features

  • Type 316 is more resistant to atmospheric and other mild environments than Type 304. It is resistant to dilute solutions (i.e. 1-5%) of sulfuric acid up to 120 ̊ F. However, in certain oxidizing acids, Type 316 is less resistant than Type 304.
  • 316 is susceptible to carbide precipitation when exposed in the temperature range of 800 ̊ – 1500 ̊ F and therefore is susceptible to intergranular corrosion in the as-welded condition. Annealing after welding will restore corrosion resistance.
  • Type 316L has the same composition as Type 316 except the carbon content is held below 0.03%. Not unexpectedly, its general corrosion resistance and other properties closely correspond to those of Type 316. However, it does provide immunity to intergranular attack in the as-welded condition or with short periods of exposure to the temperature range of 800 ̊ – 1500 ̊ F. The use of 316L is recommended when exposure in the carbide precipitation range is unavoidable and when annealing after welding is not practical. However, prolonged exposure in this range may embrittle the material and make it susceptible to intergranular attack.
  • The maximum temperature for scaling resistance in continuous service is about 1650 ̊ F, and 1500 ̊ F for intermittent service.
  • May be susceptible to chloride stress corrosion cracking.
  • Non-hardenable; non-magnetic in the annealed condition, and slightly magnetic when cold worked.
  • Improved corrosion resistance to chlorides.

James Duva Inc. stocks 316/316L and 316/316H.

* Denotes Seamless


  • Seamless Pipe 1/4″ – 20″
  • Weld Pipe 1/2″ – 24″
  • Butt-Weld Fittings 1/2″ – 24″
  • Butt-Weld Fittings 1/2″ – 12*”
  • Flanges 1/2″ – 24″
  • Pressure Fittings 1/4″ – 4″
  • Plate 1/8″ – 3″
  • BQ-Brewery Quality Welded Pipe: 1/2″-12″
  • BQ-Brewery Quality BW Fittings: 1/2″-12″
  • Seamless Tube 1/16″ – 6″
  • 150# Fittings/Nipples 1/4″ – 4″
  • Valves 1/2″ – 24″
  • Weld Tubings 1/8″ – 12″
  • Bar 1/8″ – 12″
  • Sanitary Tube 1/2″ – 8″
  • Sanitary Fittings 1/2″ – 8″
  • BQ-Brewery Quality Flanges: 1/2″-12″


  • ASTM A312, A376, A358, A269, A249, A403, A182, A351, A479, A276
  • ASME SA312, SA376, SA358, SA269, SA249, SA182, SA276, SA403, SA479, SA351

Tensile Requirements

Tensile Strength (KSI) 70
Yield Strength (KSI) 25
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.

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Chemical Composition

C Cr Mn Mo Ni P S Si
Max Max Max Max Max
0.035 16.0 – 20.0 2.00 2.0 – 3.0 10.0 – 15.0 0.040 0.030 0.75