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Cold drawn Bronze CuSn4Zn4Pb4 Round bars drawn Page PDF STANDARDS EN 12164 CW456K ASTM B139 C54400 JIS H3270
Chemical composition EN12164 CW456K Cu Sn Zn Pb P Fe Ni Te Autres Reste 3.5/4.5 3.5/4.5 3.5/4.5 0.01/0.4 0.1 0.2 0.2 0.2 Mechanical specifications Temper Round bar Ts N/mm² Ys N/mm² A % HB Brinell EN12164 CW456K (factory stock) Etat R450 dia 6 to 12 mm ≥ 450 (≈ 350) ≥ 10 (≈ 150) Etat R550 dia 2 to 6 mm ≥ 550 (≈ 500) > 5 (≈ 180) Etat R640 dia 2 to 4 mm ≥ 640 (≈ 580) (≈ 200) () : values between brackets = approximate figures Properties High mechanical specifications Good elasticity Easy to machine Resistance to corrosion Alloy easy to solder & braze Uses Piston rings Friction pads & parts Transmission shafts Connector parts Physical properties Specific weight g/cm³ 8.8 Modulus of elasticity N/mm² 118000 Coefficient of thermal expansion 10^-6/K 17 Thermal conductivity W/mK 80 Electrical conductivity m/mm² 9.5 Size range Round bar : ∅ 6 à 40 mm Size tolerances : h9 for round ∅ 6 to 20 mm h10 for round ∅ > 20 to 40 mm Straightness of bars : 0.3 to 1mm/metre ∅ 6 to 20 mm 0.5 to 1mm/metre ∅ > 20 to 40 mm
