Stainless Steel

13-8Mo is a precipitation hardening martensitic stainless-steel offering excellent fracture toughness and transverse mechanical properties coupled resistance to stress-corrosion cracking. It exhibits high strength characteristics common to the family of precipitation hardening steels. A wide range of mechanical properties can be realized by selecting various single cycle low temperature aging treatments.

Typical applications include aircraft and nuclear reactor components, fasteners, gears, valves and jet engine parts. This alloy should be considered for applications requiring a combination of stress-corrosion resistance and high strength properties.

13-8Mo is a precipitation hardening martensitic stainless-steel offering excellent fracture toughness and transverse mechanical properties coupled resistance to stress-corrosion cracking. It exhibits high strength characteristics common to the family of precipitation hardening steels. A wide range of mechanical properties can be realized by selecting various single cycle low temperature aging treatments.

Typical applications include aircraft and nuclear reactor components, fasteners, gears, valves and jet engine parts. This alloy should be considered for applications requiring a combination of stress-corrosion resistance and high strength properties.

15-5Ph is a precipitation hardening martensitic stainless-steel considered of being a compositional modification of 17-4 with minimal delta ferrite. A wide range of mechanical properties is available via simple aging within a 900-1150°F (482-621°C) temperature range. Vacuum arc re-melting provides low gas content, superior cleanliness and optimum transverse properties.

Typical applications include aircraft and missile structural components, gears, valves, fasteners, jet engine and nuclear reactor parts. It is favored over 17-4 when transverse properties are of concern.

15-5Ph is a precipitation hardening martensitic stainless-steel considered of being a compositional modification of 17-4 with minimal delta ferrite. A wide range of mechanical properties is available via simple aging within a 900-1150°F (482-621°C) temperature range. Vacuum arc re-melting provides low gas content, superior cleanliness and optimum transverse properties.

Typical applications include aircraft and missile structural components, gears, valves, fasteners, jet engine and nuclear reactor parts. It is favored over 17-4 when transverse properties are of concern.

17-4Ph is a precipitation hardening martensitic stainless-steel. A wide range of mechanical properties is available via simple aging within a 900-1150°F (482-621°C) temperature range. Vacuum arc re-melting provides low gas content, superior cleanliness and optimum transverse properties.

Typical applications include aircraft and missile structural components, gears, valves, fasteners, jet engine and nuclear reactor parts.

17-4Ph is a precipitation hardening martensitic stainless-steel. A wide range of mechanical properties is available via simple aging within a 900-1150°F (482-621°C) temperature range. Vacuum arc re-melting provides low gas content, superior cleanliness and optimum transverse properties.

Typical applications include aircraft and missile structural components, gears, valves, fasteners, jet engine and nuclear reactor parts.

17-7Ph is a precipitation hardening martensitic stainless steel that provides high strength and hardness, excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment.

The alloy provides valuable property combinations, particularly suited for aerospace applications. This special alloy also provides benefits for other applications requiring high strength and good corrosion resistance, as well as excellent properties for flat springs at temperatures up to 600°F (316°C).

17-7Ph is a precipitation hardening martensitic stainless steel that provides high strength and hardness, excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment.

The alloy provides valuable property combinations, particularly suited for aerospace applications. This special alloy also provides benefits for other applications requiring high strength and good corrosion resistance, as well as excellent properties for flat springs at temperatures up to 600°F (316°C).

Type 301 (S30100) is an austenitic stainless steel. The high strengths of this grade of steel in the six available conditions or tempers, its resistance to atmosphere corrosion and its bright, attractive surface make it an excellent choice for decorative structural applications. Automobile molding and trim, wheel covers, conveyor belts, kitchen equipment, roof drainage systems, hose clamps, springs, truck and trailer bodies, railway and subway cars are some of the major applications for this versatile grade. By varying the chemical composition within the limits set by the ASTM specifications and by temper rolling, a broad range of magnetic and mechanical properties can be obtained for a variety of applications. Type 301 is available as cold rolled strip, sheets, and plates.

Type 301 (S30100) is an austenitic stainless steel. The high strengths of this grade of steel in the six available conditions or tempers, its resistance to atmosphere corrosion and its bright, attractive surface make it an excellent choice for decorative structural applications. Automobile molding and trim, wheel covers, conveyor belts, kitchen equipment, roof drainage systems, hose clamps, springs, truck and trailer bodies, railway and subway cars are some of the major applications for this versatile grade. By varying the chemical composition within the limits set by the ASTM specifications and by temper rolling, a broad range of magnetic and mechanical properties can be obtained for a variety of applications. Type 301 is available as cold rolled strip, sheets, and plates.

Type 303 (S30300) is a fully re-sulfurized free-machining austenitic stainless steel melted and processed to maximize machinability. It should be considered where extensive machining is required and some sacrifice in corrosion resistance compared to type 304 can be tolerated. In the annealed condition, it’s non-magnetic, but may become magnetic as a result of cold working.

Type 303 (S30300) is a fully re-sulfurized free-machining austenitic stainless steel melted and processed to maximize machinability. It should be considered where extensive machining is required and some sacrifice in corrosion resistance compared to type 304 can be tolerated. In the annealed condition, it’s non-magnetic, but may become magnetic as a result of cold working.

Type 303 (S30300) is a fully re-sulfurized free-machining austenitic stainless steel melted and processed to maximize machinability. It should be considered where extensive machining is required and some sacrifice in corrosion resistance compared to type 304 can be tolerated. In the annealed condition, it’s non-magnetic, but may become magnetic as a result of cold working.

Type 303 Se (S30323) is a modification of basic 303 that substitutes selenium for sulfur as an aid to machining. It offers good strength, corrosion resistance and great machinability. It will resist scaling at temperatures up to 1600°F (871°C). Commonly employed in parts requiring cold forming after machining.

Type 303 Se (S30323) is a modification of basic 303 that substitutes selenium for sulfur as an aid to machining. It offers good strength, corrosion resistance and great machinability. It will resist scaling at temperatures up to 1600°F (871°C). Commonly employed in parts requiring cold forming after machining.

Type 303 Se (S30323) is a modification of basic 303 that substitutes selenium for sulfur as an aid to machining. It offers good strength, corrosion resistance and great machinability. It will resist scaling at temperatures up to 1600°F (871°C). Commonly employed in parts requiring cold forming after machining.

Type 304 (S30400) is a variation of the basic 18-8 grade, Type 302, with a higher chromium and lower carbon content. Lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to inter-granular corrosion. In many instances, it can be used in the ”as-welded“ condition, while type 302 must be annealed in order to retain adequate corrosion resistance.

Type 304L (S30403) is an extra low-carbon variation of Type 304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the ”as-welded“ condition, even in severe corrosive conditions. It often eliminates the necessity of annealing weldments except for applications specifying stress relief. It has slightly lower mechanical properties than Type 304.

Typical uses include architectural mouldings and trim, kitchen equipment, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.

Type 304 (S30400) is a variation of the basic 18-8 grade, Type 302, with a higher chromium and lower carbon content. Lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to inter-granular corrosion. In many instances, it can be used in the ”as-welded“ condition, while type 302 must be annealed in order to retain adequate corrosion resistance.

Type 304L (S30403) is an extra low-carbon variation of Type 304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the ”as-welded“ condition, even in severe corrosive conditions. It often eliminates the necessity of annealing weldments except for applications specifying stress relief. It has slightly lower mechanical properties than Type 304.

Typical uses include architectural mouldings and trim, kitchen equipment, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.

Type 304 (S30400)

Type 304 is a variant of the 18-8 grade, Type 302. It contains more chromium and less carbon. The lower carbon content reduces chromium carbide formation during welding, decreasing the risk of intergranular corrosion. Therefore, Type 304 can often be used in the “as-welded” condition. In contrast, Type 302 typically requires annealing after welding to maintain corrosion resistance.

Type 304L (S30403)

Type 304L is a low-carbon version of Type 304, with a maximum carbon content of 0.03%. This minimizes carbide precipitation during welding. As a result, 304L can be used in the “as-welded” state, even in highly corrosive environments. Annealing is generally unnecessary unless stress relief is specified. However, 304L has slightly lower mechanical properties compared to Type 304.

Common Applications

These stainless steels are commonly used in architectural moldings and trim, kitchen equipment, and welded components in the chemical, textile, paper, pharmaceutical, and chemical processing industries.

Type 304 (S30400) is a variation of the basic 18-8 grade, Type 302, with a higher chromium and lower carbon content. Lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to inter-granular corrosion. In many instances, it can be used in the ”as-welded“ condition, while type 302 must be annealed in order to retain adequate corrosion resistance.

Type 304L (S30403) is an extra low-carbon variation of Type 304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the ”as-welded“ condition, even in severe corrosive conditions. It often eliminates the necessity of annealing weldments except for applications specifying stress relief. It has slightly lower mechanical properties than Type 304.

Typical uses include architectural mouldings and trim, kitchen equipment, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.

Type 316 is an austenitic chromium-nickel 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.

Type 316 is an austenitic chromium-nickel 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.

Type 316 is an austenitic chromium-nickel 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.

Type 316 is an austenitic chromium-nickel 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.

316LVM is vacuum melted to achieve one of the most extremely high levels of purity and sterile required for surgical implants. In addition, it used for high precision electronic parts. It has excellent resistance in physiological environments, to general and intergranular corrosion, to pitting and crevice corrosion.

Type 420 is a martensitic stainless steel that provides corrosion resistance similar to Type 410 plus increased strength and hardness. It is magnetic in both the annealed and hardened conditions. Maximum corrosion resistance is attained only in the fully hardened or fully hardened and stress relieved condition. It is never used in the annealed condition.

Applications requiring good corrosion resistance and high hardness are ideal for this alloy. Typical uses include cutlery, surgical and dental instruments, scissors, tapes and straight edges. The alloy is not normally used at temperatures exceeding 800 ° F (427 ° C) due to rapid softening and loss of corrosion resistance.

Type 420 is a martensitic stainless steel that provides corrosion resistance similar to Type 410 plus increased strength and hardness. It is magnetic in both the annealed and hardened conditions. Maximum corrosion resistance is attained only in the fully hardened or fully hardened and stress relieved condition. It is never used in the annealed condition.

Applications requiring good corrosion resistance and high hardness are ideal for this alloy. Typical uses include cutlery, surgical and dental instruments, scissors, tapes and straight edges. The alloy is not normally used at temperatures exceeding 800 ° F (427 ° C) due to rapid softening and loss of corrosion resistance.

Type 420 is a martensitic stainless steel that provides corrosion resistance similar to Type 410 plus increased strength and hardness. It is magnetic in both the annealed and hardened conditions. Maximum corrosion resistance is attained only in the fully hardened or fully hardened and stress relieved condition. It is never used in the annealed condition.

Applications requiring good corrosion resistance and high hardness are ideal for this alloy. Typical uses include cutlery, surgical and dental instruments, scissors, tapes and straight edges. The alloy is not normally used at temperatures exceeding 800 ° F (427 ° C) due to rapid softening and loss of corrosion resistance.

Type 440C is a high carbon martensitic stainless steel which exhibits an attainable hardness of approximately 60 HRC. The high carbon content results in a hard matrix and numerous chromium carbides in the microstructure, which in turn provide excellent wear resistance and retention of cutting edges.

Typical applications include specialty knives, industrial knives, scissors, surgical knives, and other applications which require a combination of corrosion resistance, wear resistance, or edge retention.

Type 440C is a high carbon martensitic stainless steel which exhibits an attainable hardness of approximately 60 HRC. The high carbon content results in a hard matrix and numerous chromium carbides in the microstructure, which in turn provide excellent wear resistance and retention of cutting edges.

Typical applications include specialty knives, industrial knives, scissors, surgical knives, and other applications which require a combination of corrosion resistance, wear resistance, or edge retention.