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Phosphor Bronze Alloys

Widely used in the several manufacturing units, we present an array of phosphor bronze alloys rods, phosphor bronze bars, phosphor bronze squares and many more. These phosphor bronze alloys offer resistance towards fatigue and chemical corrosion, so they are used for varied application in various industries such as in heavy engineering, defense, aviation, electrical and more.

Standard Nearest ISO Designation International Equivalent Chemical Composition by Wt. % Conditions
IS DIN ISO JIS ASTM Cu% Sn% P% Pb% Zn% Others
BS 2874, PB - 102 CuSn5 7811 17662 / 17672 427-1983 H-3270, C-5102 B-139, C-5100 Rem 4.2 - 5.5 0.02 - 0.40 0.02 max 0.03 max Fe-0.10max Total Imp 0.50% max M
BS 2870/2875, PB - 103 CuSn6 - 17662 / 17672 427-1983 H-3270, C-5191 H-3270, C-5191, C-5191 Rem 6 - 7.5 0.02 - 0.40 0.02 max - Total Imp 0.20% max O
BS 2874, PB - 104 CuSn8 - 17662 / 17672 427-1983 M-3270 ,C-5212 B-139, C-52100 Rem 7.2 - 9 0.02 - 0.40 0.02 max 0.03 max Total Imp 0.30% max M
Standard Mechanical Properties Applications
UTS N/mm2 E% Y.S. Rp 0.2 Hardness
BS 2874, PB - 102 260 - 500 12 25 N/mm2 80-410 HB -
Having Good Endurance, corrosion and abrasion resistance. Nut, Bolts, Washers, Cotterpins, Automotives Systems, Marine Engg, Aviation Industries, Mining & Drilling Equipments, Clutch Discs etc.
BS 2870/2875, PB - 103 340 - 400 55 250 max 85 min
Used in electrical motor, penal, Generator Aircraft Engineering, Heavy Engg. Excellent Tarnish & Corrosion Resistance to a wide range of waters & chemicals in such as paper and textile mfg. plants.
BS 2874, PB - 104 450 - 550 15 - 20 300 - 400 -
This wrought alloy is a high performance product with exceptional bearing wear and properties, combined with excellent fatigue properties and corrosion fatigue resistance in marine. Applications and other corrosive enviroments. Applications include high duty fasteners, bearings and bushes, drive shafts, pump and valve components, high performance engine valve guides, electrical clamps, connectors and switchgears
* Rods / Bars for electrical purposes the conductivity / resistivity required shall be as agreed.
* The examples above mentioned are only indicative.
* M - As Manufactured
* O - Annelead
* H - Hard