UNS S31600 (316 Stainless steel)

UNS S31600, commonly referred to as 316 stainless steel, is a molybdenum-containing austenitic stainless steel that is very similar to 316L stainless steel, but contains a higher carbon content. This material is widely used for its excellent corrosion resistance and mechanical properties.

Chemical composition

Typical chemical composition of 316 stainless steel is as follows:

Carbon (C): Maximum 0.08%

Manganese (Mn): Maximum 2.00%

Silicon (Si): 1.00% Max

Chromium (Cr): 16.0-18.0%

Nickel (Ni): 10.0-14.0%

Molybdenum (Mo): 2.0-3.0%

Phosphorus (P): maximum 0.045%

Sulfur (S): Maximum 0.030%

Physical property

The physical properties of 316 stainless steel include:

• Density: about 7.98 g/cm³

• Melting point range: about 1390-1450 °C (about 2526-2642 °F)

• Coefficient of thermal expansion: varies with temperature, but at about 16 x 10⁻⁶ K⁻¹

  
  

Mechanical property

The mechanical properties of 316 stainless steel are usually as follows:

• Tensile strength: approximately 515 MPa (75,000 psi)

• Yield strength: approximately 205 MPa (30,000 psi)

• Elongation: about 40% Hardness: about 187 HB

Corrosion resistance

Due to its high chromium and molybdenum content, 316 stainless steel exhibits excellent corrosion resistance in a variety of media, especially in chloride and brine environments. It has better resistance to pitting and crevice corrosion than 304 stainless steel.

Application field

316 stainless steel is widely used in the following industries and applications:

• Aerospace

• Chemical processing

• Food and beverage processing

• Oil and gas

• Medical and Pharmaceutical

• Pulp and paper making

• General industrial application

Machinability:316 stainless steel has good cold working and hot working properties, easy to weld and form. It can be machined by various metalworking techniques, including bending, drawing and deep drawing.

Sum up: UNS S31600 (316 stainless steel) is a versatile austenitic stainless steel that is favored for its excellent corrosion resistance and a wide range of applications. It is suitable for use in a variety of industrial environments, including extreme temperatures and corrosive media. Due to its high molybdenum content, 316 stainless steel performs well in chloride and brine environments, making it an ideal choice for many applications requiring high corrosion resistance.