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Stainless Steel Material Descriptions
Austenitic Grade
| | 303 | Free machining stainless. Used in automatic machining operations. High corrosion resistance.
| | 304 | 304 Most widely used stainless. Good corrosion resistance with good formability and welding.
| | 304L | Low carbon stainless with the same properties as 304 but with superior intergranular corrosion resistance following welding or relieving.
| | 316 | Better corrosion resistance and higher strength at elevated temperatures than 304. It also has superior creep strength at elevated temperatures. Used in pumps, valves, chemical equipment, and marine equipment.
| | 316L | Low carbon stainless with the same properties as 316 but with superior intergranular corrosion resistance following welding or relieving.
| | 20 CB3 | Highly corrosion resistant alloy. Used in mostly chemical industry.
| Ferrite Grade
| | 416 | Heat-treatable, free machining stainless used where corrosion is not severe. Resistant against natural food acids, water and basic salts in most atmospheres.
| Martensitic Grade
| | Carpenter
Custom 450 | Displays the same corrosion resistance as 304 stainless, with two to three times the yield strength. Can be used heat-treated or non heat-treated.
| Precipitation Hardening Grade
| | 17-7 PH | Excellent mechanical properties at elevated temperatures. Heat-treatable for high strength properties.
| | AM 350 | Same properties as 17-7PH with slightly higher capabilities at elevated temperatures. Can be used heat-treated or non heat-treated.
| Special Metals
| | Monel 400 | High strength and toughness over wide temperature range. Corrosion and oxidation resistance to 1000 degrees F.
| | Inconel 625 | Excellent corrosion resistance, formability, and welding properties. Good for cryogenic to high temperatures up to 2000 degrees F.
| | Hasteloy C | Used mostly in chemical environments for resistance against oxidizing agents.
| | | Information for this sheet came from the Carpenter Technology (www.cartech.com) and Ulbrich Stainless Steels and Special Metals Inc. (www.ulbrich.com) web sites. |
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