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Alloy 317L (UNS S31703) is a low carbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has superior chloride pitting and general corrosion resistance to the conventional 304/304L and 316/316L grades.
| C | Si | Mn | P | S | Cr | Mo | Ni |
| ≤0.035 | ≤0.075 | ≤2.00 | ≤0.04 | ≤0.03 | 18.00-20.22 | 3.00-4.00 | 11.00-15.00 |
| Tensile Strength ksi (min.) | Yield Strength 0.2% Offset ksi (min.) | Elongation -% in 50 mm (min.) | Hardness (Brinell) MAX |
| 75 | 30 | 40 | 217 |
Alloy 317L is commonly used to handle sulfur, pulp liquor, acid dyestuffs, acetylating and nitrating mixtures, bleaching solutions, severe coal and oil, and many chemical compounds. Some other applications that use alloy 317L include:
-Paper and pulp handling equipment
-Chemical and petrochemical processing equipment
-Condensers in fossil and nuclear fueled power generation stations
-Food processing equipment
-Textile equipment
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