Austenitic 316H(S31609) stainless steel plate/coil

Austenitic 316H(S31609) stainless steel plate/coil

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Description

Chemical Composition and Mechanical Properties of 316H Stainless Steel

316H (S31609) is a higher carbon variant of 316 stainless steel with the following composition:

Element Percentage
Carbon 0.04-0.10
Chromium 16.00-18.00
Nickel 10.00-14.00
Molybdenum 2.00-3.00
Manganese (max) 2.00
Silicon (max) 0.75
Phosphorus (max) 0.045
Sulphur (max) 0.030

Mechanical Properties:

Property Value
Tensile Strength (min) 515 MPa
Yield Strength (min) 205 MPa
Elongation (min) 40%
Hardness (max) 217 Brinell, 95 HRB

Applications and Industries Using 316H Stainless Steel

316H stainless steel is widely used in:

  1. Petrochemical and oil industry
  2. Industrial boilers and heat exchangers
  3. Pressure vessels for elevated temperature service
  4. Chemical processing equipment
  5. Marine applications
  6. Food processing equipment
  7. Pharmaceutical production

High-Temperature Performance and Corrosion Resistance

316H offers excellent performance at elevated temperatures:

  • Suitable for use in applications above 500°C (932°F)
  • Provides higher creep and stress rupture properties than 304 and 304L alloys
  • Offers moderate corrosion resistance in chloride environments
  • Pitting Resistance Equivalent (PRE) of 24

Manufacturing Process of 316H Stainless Steel Plates and Coils

The manufacturing process typically involves:

  1. Smelting of raw materials in an electric arc furnace
  2. Casting into ingots
  3. Hot rolling to form slabs
  4. Cold rolling for smoother surface finish
  5. Annealing to relieve stress and increase ductility

Welding and Fabrication Considerations

316H has good weldability:

  • Can be welded using standard fusion and resistance welding methods
  • No preheating required
  • Post-weld heat treatment generally not necessary
  • Cold working operations can enhance strength and hardness

Comparison of 316H with Other Austenitic Stainless Steel Grades

Grade Carbon Content Tensile Strength (min) High-Temperature Performance
316H 0.04-0.10% 515 MPa Excellent
316 0.08% max 515 MPa Good
316L 0.03% max 485 MPa Moderate

 

At HL Steel Company, we provide high-quality 316H (S31609) stainless steel plates and coils, ensuring optimal performance for your high-temperature and corrosion-resistant applications.

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