Simulation Analysis of Springback for Lead Frame Copper Alloy

2012 ◽  
Vol 560-561 ◽  
pp. 1048-1051 ◽  
Author(s):  
Juan Hua Su ◽  
Feng Zhang Ren ◽  
Ze Yang
Keyword(s):  
Integrated Circuit ◽  
Copper Alloy ◽  
High Performance ◽  
Simulation Analysis ◽  
Copper Alloys ◽  
Lead Frame ◽  
Bending Performance ◽  
Curvature Variation ◽  
Modeling Software ◽  
Bending Radius

The bending performance of lead frame materials is a very important in improving the quality of lead frame alloys and meeting the needs of high performance integrated circuit. The sringback amount of curvature variation of CuFeP , CuCrZrMg , CuNiSi and CuCrSnZn alloy are researched by numerical simulation. Bending model is built by 3D modeling software, and the necessary post-processing is carried out. The bending springback amount △K of the four kinds of copper alloy materials are calculated out. The results show that the sringback amount of curvature variation of four copper alloys at the same condition from large to small in turn is CuCrZrMg, CuNiSi, CuFeP, CuCrSnZn. Smaller the minimum relatively bending radius of copper alloy used in lead frame, less the springback amount and better the forming performance.

ULTRONZE

Alloy Digest ◽  
1981 ◽  
Vol 30 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Stress Relaxation ◽  
Physical Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Copper Alloys ◽  
Heat Treating ◽  
Bend Strength ◽  
Excellent Corrosion Resistance ◽  
Relaxation Characteristics

Abstract ULTRONZE is a copper alloy also known as Olin Alloy 654. It bridges the gap between standard high-performance copper alloys and beryllium-copper alloys, thus enabling the design of parts with properties previously only attainable with more expensive materials. The alloy has superior stress-relaxation characteristics, good bend performance and excellent corrosion resistance. Among its typical uses are electrical connectors, fuse clips and relay springs. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: Cu-417. Producer or source: Olin Brass.

Formation and Growth of Intermetallic Compound Layers at Interface of Solder/Copper Alloys for Lead Frame

2011 ◽  
Vol 189-193 ◽  
pp. 3383-3390 ◽  
Author(s):  
Fu Xiang Huang ◽  
Ping Yin ◽  
Chun Tian Li ◽  
Ji Chao Li
Keyword(s):  
Growth Rate ◽  
Intermetallic Compound ◽  
Growth Kinetics ◽  
Copper Alloy ◽  
Copper Alloys ◽  
Chemical Species ◽  
Lead Frame ◽  
System Alloy ◽  
Alloying Element ◽  
Zn Alloys

The effect of chemical species of copper alloys on growth of intermetallic compounds (IMCs) at interface of solder/copper alloys for lead frame was investigated. The results have revealed that Cu is the main diffusing species during aging. After aged at 160°C for 300h, only a Cu6Sn5IMC layer is observed at SnPb/copper alloys interfaces. The growth rate of IMC on the Cu-Cr-Zr system alloys and Cu-Ni-Si alloys was much slower than that of IMC on the C19400 alloy. The Pb phase and voids were found to be inside the Cu6Sn5phase. Chromium, one of the alloying element in Cu-Cr-Zr-Zn alloys, has found to be segregated at the interface between the copper alloy/Cu6Sn5. Zn and Zr in the Cu-Cr-Zr-Zn system alloy are enriched in small amout inside the IMC. These observed results were discussed and analysed on the baisis of diffusion and growth kinetics.

BERYLCO 25

Alloy Digest ◽  
1973 ◽  
Vol 22 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
Beryllium Copper

Abstract BERYLCO 25 is the standard high-performance beryllium copper alloy most widely used because of its high strength, hardness and excellent spring characteristics. BERYLCO 25 is the updated version of BERYLCO 25S (Alloy Digest Cu-3, November 1952). 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: Cu-271. Producer or source: Kawecki Berylco Industries Inc..

MOLDSTAR 90

Alloy Digest ◽  
2005 ◽  
Vol 54 (3) ◽  
Keyword(s):  
Compressive Strength ◽  
Injection Molding ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Blow Molding

Abstract MoldStar 90 is a high-performance beryllium-free copper alloy for the blow-molding and injection-molding industries. This datasheet provides information on composition, physical properties, hardness, tensile properties, and compressive strength. It also includes information on machining, joining, and surface treatment. Filing Code: CU-732. Producer or source: Performance Alloys.

MOLDSTAR 150

Alloy Digest ◽  
2005 ◽  
Vol 54 (2) ◽  
Keyword(s):  
Compressive Strength ◽  
Injection Molding ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Blow Molding

Abstract MoldStar 150 (formerly PAS 940) is a high performance copper alloy for the blow-molding and injection-molding industries. This datasheet provides information on composition, physical properties, tensile properties, and compressive strength. It also includes information on forming, machining, joining, and surface treatment. Filing Code: CU-729. Producer or source: Performance Alloys.

ALCOA 351 SUPRACAST

Alloy Digest ◽  
2020 ◽  
Vol 69 (7) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Elevated Temperatures ◽  
Heat Treating ◽  
Aluminum Silicon

Abstract Alcoa 351 SupraCast is a heat-treatable aluminum-silicon-copper alloy that also contains small amounts of magnesium, manganese, vanadium, and zirconium. It is designed for components exposed to elevated temperatures in high performance engines. This datasheet provides information on composition, physical properties, and tensile properties as well as fatigue. It also includes information on heat treating, machining, and joining. Filing Code: Al-466. Producer or source: Alcoa Corporation.

KEMPER CuSn6

Alloy Digest ◽  
2018 ◽  
Vol 67 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Electronics Industry ◽  
Bend Strength ◽  
Leaf Springs ◽  
Machine Parts

Abstract Alloy CuSn6 (UNS C51900) is a high-performance copper alloy. Typical uses include components for the electronics industry such as connector springs, relays, leaf springs, and switches as well as machine parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming and joining. Filing Code: Cu-873. Producer or source: Gebr. Kemper GmbH + Company KG Metallwerke.

COPPER ALLOY No. 185

Alloy Digest ◽  
1980 ◽  
Vol 29 (2) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
Copper Alloys ◽  
Circuit Breaker ◽  
Heat Treating ◽  
Age Hardening ◽  
Good Strength

Abstract Copper Alloy No. 185 has fairly high electrical and thermal conductivity in combination with good strength and hardnes. It is an age-hardening type of alloy containing nominally 0.10% silver; it formerly was known as one of the Chromium Copper alloys. Among its many applications are circuit breaker parts, electrode holder jaws, switch contacts and electrical and thermal conductors requiring greater strength than copper. 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: Cu-390. Producer or source: Copper and copper alloy mills.

KEMPER C688

Alloy Digest ◽  
2017 ◽  
Vol 66 (12) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
High Conductivity ◽  
Bend Strength ◽  
Very High

Abstract Alloy C688 is a high-performance copper alloy with very high conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming and joining. Filing Code: Cu-867. Producer or source: Gebr. Kemper GmbH + Company KG Metallwerke.

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