Phosphor Bronze Strips

Content of basic components

2% - 8% tin, 0.1% - 0.4% phosphorus, the rest is copper alloy.

Phosphor copper (phosphor bronze) (tin bronze) (Tin Phosphorus Bronze) is composed of degassing agent, phosphorus P content is 0.03 ~ 0.35%, tin content is 5 ~ 8%. And other trace elements such as iron, iron, zinc, zinc, etc., it has good ductility and fatigue resistance. It can be used in electrical and mechanical materials, and its reliability is higher than that of common copper alloy products.

The Tin Phosphorus Bronze has higher corrosion resistance, wear resistance and no spark during impact. It is used for medium speed and heavy load bearing with high working temperature of 250 ℃. It has the characteristics of automatic centering, insensitive to deflection, uniform bearing capacity, high bearing capacity, radial load at the same time, self lubrication and no maintenance.

Tin Phosphorus Bronze is a kind of alloy copper, which has good electrical conductivity, is not easy to heat, ensure safety and has strong fatigue resistance.

Tin phosphor bronze jack spring hard wire electrical structure, no rivet connection or friction contact, can ensure good contact, good elasticity, and stable plug-in. The alloy has excellent machinability and chip forming properties, which can shorten the processing time of parts rapidly.

Physical properties and Application

Basic characteristics

Alloy grades c5111, c5101, C5191, c5212, C5210

Specific gravity 8.86 8.85 8.83 8.8 8.8

Coefficient of thermal expansion 18 18 18 18 18

Thermal conductivity coefficient 84 71 67 63 63

Conductivity 20 16 14 13 13

The volume resistance rate was 8.86 10.78 12.32 13.26 13.26

The specific heat is 0.378 0.378 0.378 0.378 0.378

Elastic coefficient 117600 114660 112700 107800 107800

Brand: C5210 phosphor bronze

Standard: GB / T 1176-1987

Characteristics: corrosion resistance, especially for dilute sulfuric acid, hydrochloric acid and fatty acid high corrosion resistance.

Chemical composition (%):

Copper: surplus

SN: 7.0-9.0

Zinc and zinc: ≤ 0.2

Lead and lead: ≤ 0.05

Ni: ≤ 0.2

Fe: ≤ 0.10

Phosphorus P: 0.03-0.35

Cu + Sn + P: more than 99.5%

Brand: C5191

Standard: GB / T 4423-1992

Characteristics and scope of application:

C5191 Tin Phosphorus Bronze has high strength, elasticity, wear resistance and diamagnetism. It has good pressure machinability in hot and cold state, high flame resistance to electric spark, weldability and fiber welding, good machinability and corrosion resistance in atmosphere and fresh water. -(Nokia) C5191 is used to make springs and spring contact plates with good conductivity, wear-resistant parts and antimagnetic parts in precision instruments, such as gears, brush boxes, vibrating plates, contactors, etc.

chemical composition

Copper: surplus

Tin SN: 6.0 ～ 7.0

Lead and lead: ≤ 0.02

Phosphorus P: 0.10-0.25

Al: ≤ 0.002

Fe: ≤ 0.05

Silicon Si: ≤ 0.002

Antimony sb: ≤ 0.002

Bismuth Bi: ≤ 0.002