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grade reference | stainless steel type | description of strengths, characteristics, and applications |
201 | austenitic | low nickel equivalent of 301, used in flatware |
202 | austenitic | low nickel equivalent of 302, used for kitchenware |
205 | austenitic | low work hardening, for spin forming |
301 | austenitic | higher work hardening, for trailer bodies, fasteners |
302 | austenitic | general purpose grade |
303 | austenitic | free machining version of 302, for screw machining |
304 | austenitic | low carbon, economical grade, not seawater resistant but weldable |
304l | austenitic | extra-low carbon improves resistance to post-weld corrosion |
305 | austenitic | low work hardening, for spin forming |
308 | austenitic | higher alloy content for corrosion/heat resistance, for welding rod/wire |
309 | austenitic | high temperature, scale resistant, for heat exchangers |
310 | austenitic | high temperature, scale resistant, for furnaces |
314 | austenitic | high resistance to scale, for radiant tubes |
316 | austenitic | increased molybdenum for improved corrosion resistance in seawater |
316l | austenitic | a low carbon version of 316 for improved post-weld corrosion resistance |
317 | austenitic | improved corrosion and creep resistance over 316 |
321 | austenitic | high titanium version of 304 for better high-temperature performance |
329 | aust-ferritic | general corrosion resistance, like 316, with improved stress-crack resistance |
330 | austenitic | resistant to carburization, oxidation, thermal shock, for heat-treating fixtures |
347 | austenitic | a higher creep-strength version of 321, for jet engine components |
348 | austenitic | low retentivity version of 321, for nuclear service |
384 | austenitic | low cold work hardening, for bolts, screws |
403 | martensitic | turbine grade, for steam turbine blading |
405 | ferritic | non-hardenable grade of 403 |
409 | martensitic | general purpose, for constructions not requiring heat treatment |
410 | martensitic | general purpose, for machine parts such as shafting, auto exhausts |
414 | martensitic | high hardena
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