STAINLESS STEEL
CHROME-NICKEL, NON-HARDENING,
AUSTENITIC (NON-MAGNETIC)
203 EZ (S20300). Superior machining austenitic stainless designed specifically for high speed automatic machine operations. Faster speeds, better finish, longer tool life when compared to 303. Same corrosion resistance.
303 (S30300). Free machining variation of T-302/304 for use in automatic machining operations. Corrosion resistant to atmospheric exposures, sterilizing solutions, most organic and many organic chemicals; most dyes, nitric acid and foods.
304 (S30400). The most widely used of the stainless and heat resisting steels. Offers good corrosion resistance to many chemical corrodents as well as industrial atmospheres. Has very good formability and can be readily welded by all common methods. 304 Prodec offers improved machinability.
304 L (S30403). Extra low carbon variation of T-304 avoids harmful carbide precipitation due to welding. Same corrosion resistance as T-304. Slightly lower mechanical properties than T-304. 304 L Produce offers improved machinability.
309/309S (S30900, S30908. Used in high temperature applications. High scale resistance. Corrosion resistance superior to 304. Excellent in resisting sulfite liquors, nitric acid, nitic-sulfuric mixtures, acetic, citric and lactic acids. 309S (.08 max. carbon) resists corrosion in welded parts.
310/310S (S31000, S31008). Higher alloy content improves the characteristics of 309. Corrosion resistance better than 304. Excellent oxidation resistance. 310S (.08 max carbon) offers improved corrosion resistance in welded components.
316 (S31600). Better corrosion and pitting resistance as well as higher strength at elevated temperatures than T-304. Used for pumps, valves, textile and chemical equipment, pulp & paper and marine applications. 316 Prodec offers improved machinability.
316 L (S31603). Extra low carbon variation of T-316 to avoid carbide precipitation due to welding. Same excellent corrosion resistance of T-316. 316 L offers improved machinability.
317 L (S31703). Moly bearing austenitic steel with alloy content somewhat higher than 316. This chemistry gives 317 L superior corrosion resistance in difficult environments, as well as higher creep, stress-to-rupture and tensile strengths at elevated temperatures. Applications include FGD scrubbers, chemical and petrochemical processing equipment and pulp and paper equipment.
321 (S32100). Stabilized with titanium for weldments subject to severe corrosion. No carbide precipitation. Excellent resistance to a variety of corrosive media. Immune to most organic chemicals, dyestuffs and many inorganic chemicals.
330 (N08330). Austentic alloy with carburization/oxidation resistance - withstands thermal fatigue. Applications include annealing covers, heat treat equipment, fans, combustion chambers and radiant tubes.
347 (S34700). Stabilized by Cb and Ta for use in carbide precipitation range of 800-1500ºF without impairment of corrosion resistance. Characteristics similar to T-321.
Nitronic® 30. A nitrogen-strengthened stainless developed for applications requiring a good level of aqueous corrosion resistance combined with good resistance to abrasive and metal-to-metal wear. Applications include conveyors, hoppers, chutes, mixing equipment, screens, wear plates - any where there is wet sliding abrasion.
Nitronic 50 (S20910) (Formerly 22-13-5). A nitrogen strengthened austenitic stainless that provides a combination of corrosion resistance and strength. Corrosion resistance greater than that of T-316 and T-316L plus approximately twice the yield strength. Very good mechanical properties at both elevated and subzero temperatures.
Nitronic 60 (S21800). Excellent galling resistance, corrosion resistance comparable to T304 plus approximately twice the yield-strength. Metal to metal abrasive wear resistance is also good.
Alloy 20 (N08020). One of the “super” stainless steels designed for maximum carbide resistance to sulfuric acid attack. Stabilized with columbium to minimize carbide precipitation during welding. Widely used throughout the chemical process industry.
CHROME, HARDENABLE MARTENSITIC (MAGNETIC)
410 (S41000). Heat-treatable stainless used widely where corrosion is not severe - air, fresh water, some chemicals and food acids. Typical uses include valve & pump parts, fasteners, cutlery, turbine parts, bushings.
410 DOUBLE TEMPERED (S41000). Quenched and double tampered variation of T-410 conforming to NACE MR-01-75 (rev. 1980) API 6A Type III. For parts used in hydrogen sulfide (H2S) service.
416 (S41600). Free-machining variation of T-410 with useful corrosion resistance to natural food acids, basic salts, water and most atmospheres.
422 (S42200). A martensitic stainless steel designed for service temperatures up to 1200ºF with a good combination of high strength and toughness. It is used in stream turbines as blading and bolting material.
440 C (S44004). A high carbon (.95/1.20%C) chromium steel that can attain the highest hardness (Rockwell C60) of any standard stainless grade. In the hardened and stressed relieved condition, 440 C has maximum hardness together with high strength and corrosion resistance. Also has good abrasion resistance. 440A is lower carbon variety (.60/.75%C) which results in lower hardness but greater toughness in the hardened condition.
CHROME-NON HARDENABLE-FERRITIC (MAGNETIC)
409 (S40900). Lowest cost stainless - used extensively in automotive exhausts systems. Because of its combination of economy and good resistance to oxidation and corrosion, it creates opportunities to economically improve the performance of a wide range of parts where surface appearance is not important.
430 (S43000). Is the most popular of the non-hardenable chromium stainless steels. It combines good corrosion and heat resistance with good mechanical properties. Oxidation resistance to 1500ºF widely used in both industrial and consumer products.
PRECIPITATION HARDENING, MARTENSITIC (MAGNETIC)
17-4 (S17400). A precipitation hardening grade combining high strength and hardness with corrosion resistance similar to T-304 in most media. Simple low temperature heat at 900/1150ºF eliminates scaling and prevents excessive warpage.
17-4 DOUBLE AGED H1150 (S17400). Solution annealed then double age hardened to procedure #1 in NACE 01-75. Used in many pressure control applications in the energy market.
15-5 (S15500). A vacuum arc remelted grade which offers high strength and hardness. Excellent corrosion resistance plus excellent transverse toughness.
PH13-8Mo2 (S13800). A martensitic precipitation hardening stainless that provides a combination of excellent toughness and good traverse mechanical properties and excellent corrosion resistance.
DUPLEX (MAGNETIC)
2205 (S31803). On of the “duplex” family of stainless steels with a structure that consists of approximately 50% austenite and 50% ferrite. This duplex structure provides good stress corrosion resistance in chloride and hydrogen sulfide. It develops twice the yield strength of standard austenitic stainless steels. Used primarily in oil and gas field piping applications.
