Stainless Steel 316H Properties

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Stainless Steel 316H Properties

Stainless Steel 316H is a high-carbon variant of the standard 316 stainless steel, renowned for its exceptional strength, durability, and superior performance at elevated temperatures. This alloy is specifically engineered with a higher carbon content, typically between 0.04% and 0.10%, which significantly enhances its mechanical properties and stability under extreme conditions.

One of the standout features of Stainless Steel 316H is its excellent resistance to pitting and crevice corrosion, particularly in chloride-rich environments. This makes it an ideal choice for industries such as marine, chemical processing, and pharmaceuticals, where exposure to harsh chemicals and saline conditions is common. The addition of molybdenum in the alloy further boosts its corrosion resistance, ensuring long-term reliability and optimal performance even in the most demanding applications.

Stainless Steel 316H is also notable for its high-temperature strength, making it suitable for use in heat exchangers, boilers, and other high-temperature applications. Its ability to maintain structural integrity and mechanical properties at elevated temperatures makes it a preferred material in industries requiring high thermal resilience.

At Ferrobend, we offer a comprehensive range of Stainless Steel 316H products, including bars, plates, flanges, valves, and wire mesh. Our products are manufactured to the highest standards, ensuring precision, consistency, and quality. Whether you need materials for fabrication, construction, or any other industrial application, our Stainless Steel 316H products are designed to deliver optimal performance and longevity.

For top-quality Stainless Steel 316H that meets the rigorous demands of your toughest projects, trust Ferrobend to provide materials that stand the test of time. Our commitment to excellence ensures that you receive the best materials for your needs.

Chemical Properties:

Elements Cr Ni C Si Mn P S Mo Fe
% min: 17.0 ,max:19.0 min: 8.0 ,max: 10.0 0.15 max 1.00 max 2.0 max 0.20 max 0.15 min 0.75 balance

Mechanical Properties:

Tensile Strength ksi (min.) Yield Strength 0.2% Offset ksi (min.) Elongation - % in 50 mm (min.) Hardness (Brinell) MAX Hardness (Rockwell B) MAX
75 30 35 228 -

Physical Properties:

Denstiy lbm/in3 Coefficient of Thermal Expansion (min/in)-°F Electrical Resistivity mW-in Thermal Conductivity BTU/hr-ft-°F Melting Range
at 68 °F at 68 – 212°F at 68 – 932°F at 68 – 1450°F at 68°F at 212°F at 392°F at 752°F at 1112°F at 1472°F at 68 – 212°F -
0.29 9.2 10.4 10.9 28.3 30.7 33.8 39.4 43.7 47.6 113.2 2552°F

Equivalent Grades and Designations:

SAE / AISI 303
UNS S30300
EN Material Number 1.4305
EN Material Name X8CrNiS18-9
DIN Material Name X8CrNiS18-9
JIS SUS 303
BS 202S 21 En58M

Heat Resistance:

  • Good oxidation resistance at temperatures up to 1700oF (927 oC)
  • Continuous use at temperatures above 1400oF (760oC) is not usually recommended due to carbide precipitation which can lead to irregular scaling
  • Does not have a low carbon content so it is also vulnerable to sensitization

Welding Characteristics:

  • Not generally recommended, but may be welded with some difficulty
  • May be welded with Alloy 310 electrodes
  • Should be annealed after welding to re-dissolve precipitated carbides

Machinability:

  • High machining rates can be obtained in the annealed condition with hardness in the range of 200 to 240 Brinell
  • Will work harden; therefore, it should be machined at reduced surface feet per minute and heavier feeds to prevent glazing at the tool interface.

Applications:

  • Nuts and bolts
  • Aircraft fittings
  • Gears
  • Screws
  • Shafts
  • Electrical switchgear components
  • Bushings