Effect of Impurities on Some Properties of Lead-Tin Alloys

In order to master and improve the quality and properties of the final products, the major industrial challenge lies in the possibility of controlling the morphology, size of microstructures that reside within the molded pieces, as well as their defects; this is the fundamental reason according to which we are more and more interested in mastering the growth and germination of such alloys, as well as the developing structures, at the time of solidification process. The modeling reveals as a valuable aid in the mastery of the formation of such heterogeneousness: segregation cells that are incompatible with industrial requirements. The whole work focuses upon the modeling of the segregation phenomenon of the four hypoeutectic alloys, Al1%Sn, Al2%Sn, Al3%Sn and Al4%Sn, as well as the tin effect upon certain mechanical properties of aluminum. Usually, the microstructure and mechanical Â behavior of such alloys as Al-Sn are directly influenced by some parameters such as composition, cooling velocity and homogenization process.

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COPPER ALLOY No. C44400 and C44500

Alloy Digest ◽

10.31399/asm.ad.cu0599 ◽

1994 ◽

Vol 43 (11) ◽

Keyword(s):

Fracture Toughness ◽

Copper Alloy ◽

Heat Treating ◽

Small Addition ◽

Good Combination ◽

General Corrosion ◽

Good Resistance ◽

Tin Alloys ◽

Copper Zinc ◽

Strength And Ductility

Abstract COPPER ALLOY NOS. C44400 and C44500 are copper-zinc-tin alloys inhibited by antimony and phosphorus, respectively. They are commonly known as inhibited admiralty metal or admiralty brass. They have a good combination of strength and ductility and good resistance to general corrosion. The small addition of inhibitor is made to minimize the alloy’s susceptibility to dezincification and stress corrosion. They are used for condenser, evaporator and heat-exchanger tubes and associated applications. 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 corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CU-599. Producer or source: Copper and copper alloy mills.

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WRM ALLOY 5248

Alloy Digest ◽

10.31399/asm.ad.cu0640 ◽

1999 ◽

Vol 48 (10) ◽

Keyword(s):

Stress Relaxation ◽

Physical Properties ◽

Tensile Properties ◽

Bend Strength ◽

Bronze Alloy ◽

Tin Alloys ◽

Rolling Mills ◽

Relaxation Resistance

Abstract WRM alloy 5248 is a phosphor bronze alloy with higher strength and better stress relaxation resistance than 10% tin alloys. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength. Filing Code: CU-640. Producer or source: Waterbury Rolling Mills Inc.

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