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316&316L STAINLESS STEEL IN CHINA
Type 316 is an austenitic chromiumnickel stainless steel containing molybdenum. This addition increases general corrosion resistance, improves resistance to pitting from chloride ion solutions, and provides increased strength at elevated temperatures. Properties are similar to those of Type 304 except that this alloy is somewhat stronger at elevated temperatures. Corrosion resistance is improved, particularly against sulfuric, hydrochloric, acetic, formic and tartaric acids; acid sulfates and alkaline chlorides.
Type 316L is an extra-low carbon version of Type 316 that minimizes harmful carbide precipitation due to welding.Typical uses include exhaust manifolds, furnace parts, heat exchangers, jet engine parts, pharmaceutical and photographic equipment, valve and pump trim, chemical equipment, digesters, tanks, evaporators, pulp, paper and textile processing equipment, parts exposed to marine atmospheres and tubing. Type 316L is used extensively for weldments where its immunity to carbide precipitation due to welding assures optimum corrosion resistance.
Types 316 and 316L Stainless Steels exhibit better corrosion resistance than Type 304. They provide excellent pitting resistance and good resistance to most chemicals involved in the paper, textile and photographic industries.
316 / 316L Stainless Steel Properties:
Typical chemical and mechanical properties of Type 316 and Type 316L steel:
Chemical Analysis (%) | PREN | Mechanical Properties | |||||||
C | Cr | Ni | Mo | Proof Stress | Tensile | Elongation | |||
316 | .08 | 17 | 11.5 | - | 24 | 255 | 550-700 | 40 | |
316L | .03 | 17 | 11.5 | - | 24 | 220 | 520-670 | 40 |
HEAT TREATMENTS ABOUT 316 STAINLESS STEEL
Types 316 and 316L are non-hardenable by heat treatment. Annealing: Heat to 1900 - 2100°F (1038 - 1149°C), then rapidly quench.
Applications of 316 stainless steel:
316 Stainless is widely used in manufacture of manways, pharmaceutical equipment, valve bodies, bleaching and dyeing equipment for the textile industry and the food industry. 316 Stainless is resistant to atmospheric corrosion, food products, sterilization solutions and many organic chemicals as well as a variety of inorganic chemicals.