A New Ni-Free Corrosion Resistant High-Strength Austenitic Stainless Steel for Medical Applications

Stainless steels have widespread applications due to their good corrosion resistance, but for certain types of large naval constructions, other requirements are imposed such as high strength and toughness , and modified magnetic characteristics.The magnetic characteristics of a 302 type metastable austenitic stainless steel has been assessed after various cold rolling treatments designed to increase strength by strain inducement of martensite. A grade 817M40 low alloy medium carbon steel was used as a reference material.The metastable austenitic stainless steel after solution treatment possesses a fully austenitic microstructure. However its tensile strength , in the solution treated condition , is low.Cold rolling results in the strain induced transformation to α’- martensite in austenitic matrix and enhances the tensile strength. However , α’-martensite is ferromagnetic , and its introduction to an otherwise fully paramagnetic matrix alters the magnetic response of the material. An example of the mixed martensitic-retained austenitic microstructure obtained after the cold rolling experiment is provided in the SEM micrograph of Figure 1.

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UGIMA 4404 HM

Alloy Digest ◽

10.31399/asm.ad.ss1156 ◽

2013 ◽

Vol 62 (9) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

General Purpose ◽

Corrosion Resistant

Abstract Ugima 440 HM is a general-purpose, corrosion resistant austenitic stainless steel with added molybdenum (300 series with 2–2.5% Mo). It features improved machinability compared with 4404 or 316L. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1156. Producer or source: Schmolz + Bickenbach USA Inc..

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AISI No. 633

Alloy Digest ◽

10.31399/asm.ad.ss0389 ◽

1981 ◽

Vol 30 (7) ◽

Keyword(s):

Heat Treatment ◽

Stainless Steel ◽

Stainless Steels ◽

High Strength ◽

Heat Treating ◽

Corrosion Resistant ◽

Martensitic Stainless Steels ◽

Steel Mills ◽

Temperature Performance ◽

Structural Applications

Abstract AISI No. 633 is a chromium-nickel-molybdenum stainless steel whose properties can be changed by heat treatment. It bridges the gap between the austenitic and martensitic stainless steels; that is, it has some of the properties of each. Its uses include high-strength structural applications, corrosion-resistant springs and knife blades. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-389. Producer or source: Stainless steel mills.

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ARMCO 21-6-9

Alloy Digest ◽

10.31399/asm.ad.ss0125 ◽

1961 ◽

Vol 10 (12) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

High Strength ◽

Heat Treating ◽

Steel Alloy ◽

Temperature Performance

Abstract Armco 21-6-9 is an austenitic stainless steel alloy designed for use in applications where a combination of high strength and corrosion resistance is desired. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-125. Producer or source: Armco Inc., Eastern Steel Division.

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AL 15-7 PRECIPITATION HARDENING ALLOY

Alloy Digest ◽

10.31399/asm.ad.ss0496 ◽

1988 ◽

Vol 37 (6) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

Precipitation Hardening ◽

High Strength ◽

Heat Treating ◽

Vacuum Arc ◽

Temperature Performance

Abstract Allegheny Ludlum AL 15-7 Alloy is a chromium-nickel-molybdenum-aluminum semi-austenitic stainless steel. It is heat treatable to high strength and it has a moderate level of corrosion resistance. It is available both as a conventionally melted product and as vacuum arc or electroslag refined material. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-496. Producer or source: Allegheny Ludlum Corporation.

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304/304L UGIMA XL

Alloy Digest ◽

10.31399/asm.ad.ss1071 ◽

2010 ◽

Vol 59 (7) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

Tensile Properties ◽

Oxidation Resistance ◽

Heat Treating ◽

General Purpose ◽

Corrosion Resistant ◽

Continuous Service

Abstract 304/304L Ugima XL is a general purpose corrosion resistant austenitic stainless steel (300 series). Oxidation resistance in continuous service to 871 deg C (1600 deg F), and intermittent service to 787 deg C (1450 deg F). This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1071. Producer or source: Ugitech USA.

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CRUCIBLE 174 SXR

Alloy Digest ◽

10.31399/asm.ad.ss1034 ◽

2009 ◽

Vol 58 (5) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

Austenitic Stainless Steel ◽

Stainless Steels ◽

Precipitation Hardening ◽

High Strength ◽

Heat Treating ◽

Martensitic Stainless Steels ◽

Excellent Corrosion Resistance

Abstract Crucible 174 SXR is a premium-quality precipitation-hardening stainless steel designed for use as rifle barrels. It is a modification of Crucible’s 17Cr-4Ni that offers substantially improved machinability without sacrificing toughness. Its excellent corrosion resistance approaches that of a 300 series austenitic stainless steel, while its high strength is characteristic of 400 series martensitic stainless steels. At similar hardness levels, Crucible 174 SXR offers greater toughness than either the 410 or 416 stainless steels which are commonly used for rifle barrels. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming and heat treating. Filing Code: SS-1034. Producer or source: Crucible Service Centers.

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