Standard: astm b103/b103m-2009 Tolerance: astm b248 Diameter: 1mm~800mm Length: 100mm~6000mm Grade: c54400 c51900 c52100 c51100 c51000 c51180 c52180 c52400 c53400 Application: the phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings, bearings, and load-bearing thrust washers. Temper : m20, o60, h02, h04, h06, h08, h10 Usa grade astm: c51900, c52100, c51100, c51000, c54400, Iso grade: cusn4zn2, cusn4pb4zn3, cusn6, cusn8, cusn4 China grade gb: qsn4-3, qsn4-4-2.5, qsn4-4-4, qsn6.5-0.1, qsn6.5-0.4, qsn7-0.2, qsn7-0.3