Analysis of stamping materials-white copper (nickel copper alloy), phosphor bronze, beryllium copper

  Off-white copper alloy is a general term for alloys containing 50 to 70% copper  machining and 15 to 35% nickel. Its material has excellent toughness, and has a bright silvery white color and stability. Suitable for eyeglass frames, tokens, and advanced Materials and electrical materials.

  Reference price: 350NT $ / Kg--0.2T, 280NT $ / Kg--0.3 / 0.4T, 190NT $ / Kg--above 0.5

  Features: high toughness, high strength, high stability, elastic, silvery white

  Mechanical properties:

  Mechanical Performance and Physical Specifications

  Alloy type

Alloy code

 Quality

TS (Kg / mm2) EL% Hv

   C7451 R O 33.0 ～ 40.0 20 or more and 100 or less

                             1 / 4H 40.0 ～ 43.0 10 or more 100 ～ 120

                             1 / 2H 43.0 ～ 48.0 5 or more 120 ～ 140

                              

Phosphor bronze is composed of bronze (copper-tin alloy) with deoxidizer, phosphorus (P) content of 0.03 to 0.35% and other trace elements such as Fe, Zn and so on. Good ductility and fatigue resistance, can be used for electrical and mechanical materials, and corrosion resistance, material reliability is higher than ordinary copper alloy products, made by continuous melting casting (plate, copper coil), with a high degree of material Uniformity. Good electrical conductivity, high elasticity, rich abrasion resistance; it is a spring sheet and conductive material for electrical switches, terminals and other applications, but it does not have the strength of stainless steel. Appearance shall be electroplated. Therefore, it is currently used in notebooks for EMI demand. Reference price: 195NT $ / Kg --0.1T.

  C5111: 4% tin content, good strength, good corrosion resistance, good processability, can be used for high-performance electrical precision materials.

  C5102: Tin content 5%, good strength, good corrosion resistance, good processability, can be used for high-performance electrical precision materials.

  C5191: tin content 6%, motor materials, then terminals, IC components, etc. can be used, high strength and hardness characteristics.

  C5212: Tin content of 8%, with good strength characteristics, used in electrical materials.

  C5210: 8% tin content, excellent fatigue resistance and elastic properties, most suitable for high-performance electronic connections

High conductivity and high elasticity, the best hardness and strength among all copper alloys; most suitable for high temperature and high current switch parts, it is an age hardened material. It is used for precision springs such as micro switches, various advanced terminals, relays, etc. The material and characteristics are similar to PBS, but after heat treatment, better hardness and elasticity can be obtained. The appearance must be plated, but the cost is high.

 Therefore, it is currently used as little as possible in Notebook, but it is difficult to avoid the need for EMI.

Reference price: 1405 NT $ / Kg --0.1T, 1105 NT $ / Kg --0.15T C17000 Composition: Beryllium 1.60 – 1.79% Cobalt + Nickel 0.20% Minimum Cobalt + Nickel + Iron 0.6% Maximum copper balance, this is high strength Alloy C17200 Composition: Beryllium 1.80 – 2.0% Cobalt + Nickel 0.20% Minimum Cobalt + Nickel + Iron 0.6% Maximum copper balance, this is high strength alloy C17300 Composition: Beryllium 1.80 – 2.0% Cobalt + Nickel 0.20% Minimum Cobalt + Nickel + Iron 0.6%, maximum lead 0.2 – 0.6% copper balance, this is high-strength alloy C17510 Composition: beryllium 0.2 – 0.6% nickel 1.4 – 2.2% copper balance This is a highly conductive alloy, yield strength 98kg / m㎡, its conductivity and Thermal conductivity is 40-60% of pure copper, C17500 Composition: Beryllium 0.4-0.7% Cobalt 2.4-2.7% Copper balance, this is a high-conductivity alloy with a yield strength of 98kg / m㎡, and its electrical conductivity and thermal conductivity are of pure copper 40 –60%, C17410 Composition: Beryllium 0.15 – 0.50% Cobalt 0.35 – 0.60% Copper balance This is a highly conductive alloy with a yield strength of 98kg / m㎡. Its electrical and thermal conductivity is 40 –60 of pure copper

275C: This is machining beryllium copper for foundry.