Phosphor Bronze Type
QSn6.5-0.1
Grade: QSn6.5-0.1 Phosphorus copper
Standard: GB/T 4423-2007
Chemical composition (%)
Copper Cu: Residue
Tin Sn: 6.0～7.0
Lead Pb: ≤0.02
Phosphorus P: 0.10～0.25
Aluminum Al: ≤0.002
Iron Fe: ≤0.05
Silicon Si: ≤0.002
Antimony Sb: ≤0.002
Bismuth Bi: ≤0.002
Note: ≤0.1 (impurity) Mechanical properties
Tensile strength σb (MPa): ≥470
Elongation δ5 (%): ≥13
Note: Longitudinal room temperature tensile mechanical properties of bars
Specimen size: diameter or distance across the sides 5～12
Heat treatment specifications: Hot working temperature 750～770℃; annealing temperature 600～650℃. [2]
QSn6.5-0.4
Material name: QSn6.5-0.4 tin bronze
Standard: GB/T 13808-2007
Characteristics and application scope: Phosphorus tin bronze, performance and use are similar to QSn6.5-0.1. Due to its high phosphorus content, it has high fatigue strength, good elasticity and wear resistance, but it is hot brittle during hot processing and can only be processed by cold pressure.
Chemical composition (%)
Sn: 6.0-7.0
Al: 0.002
Zn: 0.3
Fe: 0.02
Pb: 0.02
Ni: 0.2
P: 0.26～0.40
Cu: Remainder
Impurities: 0.1
Mechanical properties:
Tensile strength: σb (MPa): ≥355
Elongation δ10 (%): ≥50
Elongation δ5 (%): ≥55
QSN7-0.2
Standard: GB/T 2059-2000
Characteristics and application scope: QSn7-0.2 tin bronze has high strength, good elasticity and wear resistance, easy welding and brazing, good corrosion resistance in the atmosphere, fresh water and sea water, good machinability, and is suitable for hot pressing. QSn7-0.2 phosphor bronze is used to make parts that bear friction under medium load and medium sliding speed, such as anti-wear washers, bearings, sleeves, turbines, etc. It can also be used as springs, reeds, etc.
Chemical composition (%)
Copper Cu: Residue
Tin Sn: 6.0~8.0
Lead Pb: ≤0.02
Phosphorus P: 0.10~0.25
Aluminum Al: ≤0.01
Iron Fe: ≤0.05
Silicon Si: ≤0.02
Antimony Sb: ≤0.002
Bismuth Bi: ≤0.002
Note: ≤0.15 (impurity)
Mechanical properties:
Tensile strength σb (MPa): ≥665
Elongation δ10 (%): ≥2
Note: Room temperature tensile mechanical properties of strip
Sample size: Thickness ≥0.15
