Timetal Exhaust XT is a lean alloy, but exhibits good corrosion resistance and higher strength than needed for automotive exhaust. This datasheet provides information on composition, physical properties, tensile properties, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: Ti-156. Producer or source: Timet.

ATI 441 is a low-carbon and low-nitrogen ferritic stainless steel with 18 Cr and columbium. The alloy is typically used for exhaust system components. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: SS-1150. Producer or source: Allegheny Technologies Inc..

ATI 409HP (UNS S40900) ferritic stainless steel was introduced by ATI Allegheny Ludlum to provide improved oxidation and corrosion resistance for automotive exhaust systems in comparison to carbon steel. The alloy was designated "MF-1", indicating its end use: automotive mufflers. The good fabricability of this alloy, combined with its basic corrosion resistance and economy have significantly broadened the utility of ATI 409HP stainless steel. ATI 409HP consists of four grades: UNS S40900, S40910, S40920, and S40930. 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, machining, and joining. Filing Code: SS-1135. Producer or source: Allegheny Technologies Inc..

AK Steel 436L Ultra Form out performs AISI Type 409 in oxidation and corrosion. This material is resistant to stress-corrosion cracking in the presence of chlorides and has excellent formability. The alloy is used in exhaust systems. This datasheet provides information on composition, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-1062. Producer or source: AK Steel Corporation.

AK Steel 409 Ultra Form was created for applications needing oxidation or corrosion protection beyond the capability of carbon steel and some coated steels. AK Steel 409 Ultra Form is more formable than standard Type 409 stainless steel and is particularly suitable for parts requiring more complex shapes and improved weldability. Examples of applications include automotive exhaust tubing and stampings. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties as well as deformation. It also includes information on high temperature performance as well as forming and joining. Filing Code: SS-990. Producer or source: AK Steel, Butler Operations.

J and L Type 409NI is a ferritic stainless steel with 11% Cr. It exhibits an excellent combination of good formability, economy, and resistance to oxidation and corrosion. It is typically used in automotive exhaust systems or where more forming is required. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SS-902. Producer or source: J & L Specialty Steel Inc.

AK Steel 439 LT is a ferritic stainless steel that has both oxidation resistance and corrosion resistance superior to Type 409, making the alloy attractive for numerous difficult-to-form automotive exhaust applications. The lower titanium content of this alloy compared to Type 439 (see Alloy Digest SS-874, February 2003) provides an improved surface essentially free from titanium scale. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as deformation. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SS-880. Producer or source: AK Steel Corporation.

AK Steel 439 has superior oxidation resistance and corrosion resistance compared to Type 409, which makes 439 attractive for numerous automotive exhaust applications. 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 and joining. Filing Code: SS-874. Producer or source: AK Steel Corporation.

Aluchrom I SE is an oxidation resistant ferritic stainless steel alloyed with aluminum and rare earth elements. Applications include framework for catalytic automobile muffler systems. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-823. Producer or source: Krupp VDM.

J and L Types 409 HP are ferritic stainless steels with 11% chromium. They exhibit an excellent combination of good formability, economy, and resistance to oxidation and corrosion. It is typically used in automotive exhaust systems. 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, and joining. Filing Code: SS-743. Producer or source: J & L Specialty Steel Inc.

Carpenter Project 70 stainless type 321 is a modified version of type 321 stainless steel with improved machinability when compared to conventional type 321. The alloy is a nonhardenable austenitic chromium-nickel steel that is particularly adaptable for parts for use at temperatures between 427 and 816 C (800 and 1500 F). This grade is nonmagnetic in the annealed condition but is slightly magnetic when cold worked. Among its many applications are aircraft engine exhaust manifolds, furnace parts, and fasteners. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming and machining. Filing Code: SS-729. Producer or source: Carpenter.

Incoloy Alloy 864 is a high performance alloy developed specifically for automotive exhaust system flexible couplings and other exhaust applications. The alloy has a good combination of oxidation and corrosion resistance, with good mechanical strength, stability, and fatigue properties. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on high temperature performance and corrosion resistance as well as joining. Filing Code: SS-708. Producer or source: Inco Alloys International Inc.

Armco 11 Cr-Cb stainless steel has higher silicon content and is dual stabilized with titanium and columbium (niobium). The alloy is designed for use in automotive exhaust systems and should be considered where the performance of AISI Type 409 stainless steel is marginal. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as joining. Filing Code: SS-690. Producer or source: Armco Inc., Specialty Steels Division.

ALFA-IV alloy is a 20% Cr, 5% Al stainless steel enhanced in oxidation resistance for high-temperature use by the addition of the rare earth metals cerium and lanthanum. The alloy was designed for substrates in industrial and automotive catalytic converters. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: SS-677. Producer or source: Allegheny Ludlum Corporation.

Carpenter Type 409Cb stainless steel is a 11% Cr steel stabilized with columbium (niobium). The alloy is used extensively in automobile exhast systems. 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, and joining. Filing Code: SS-658. Producer or source: Carpenter.

CRUCIBLE F347 is a non-hardenable austenitic chromium-nickel steel that is particularly adaptable for use at temperatures between 800 and 1650 F. It is non-magnetic in the annealed condition but is slightly magnetic in the cold-worked condition. Among its many applications are aircraft-engine exhaust manifolds, boiler shells and high-temperature handling equipment. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-436. Producer or source: Crucible Specialty Metals Division, Colt Industries.

CRUCIBLE 321 is a non-hardenable austenitic chromium-nickel steel which is particularly adaptable for parts fabricated by welding without postweld annealing for use at temperatures between 800 and 1500 F. This grade is non-magnetic in the annealed condition but is slightly magnetic when cold worked. Among its many applications are aircraft-engine exhaust manifolds, furnace parts and expansion joints. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-426. Producer or source: Crucible Specialty Metals Division, Colt Industries.

EASTERN STAINLESS Type 321 is a titanium-bearing steel designed to be free from the harmful chromium carbide precipitation (and associated intergranular corrosion) after welding or after an extended period of time in the sensitizing temperature range (800-1600 F). Type 321 is used primarily within this sensitizing (damaging) temperature range; however, its carbon combines preferentially with titanium leaving chromium in solution to maintain full corrosion resistance. Among its applications are high-temperature steam service, chemical plants and heavy-duty aircraft exhaust manifolds. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-396. Producer or source: Eastern Stainless Steel Company.

EASTERN STAINLESS Type 347 contains an addition of columbium which produces a stabilized type of stainless steel free from the chromium carbide precipitates that cause intergranular corrosion. It is recommended for welded parts which cannot be annealed after welding. It is also used for parts which are intermittently heated and cooled to temperatures between 800 and 1600 F. Its many applications include exhaust manifolds, expansion and high-pressure steam pipes. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-390. Producer or source: Eastern Stainless Steel Company.

ALLEGHENY LUDLUM MF-2 is a 12% chromium steel that was developed initially for use in automobile exhaust systems. This datasheet provides information on composition, physical properties, 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-270. Producer or source: Allegheny Ludlum Corporation.