BRONZE ALLOYS

 

PHOSPHOROUS BRONZE

 

Phosphor Bronzes are alloys containing copper, tin and phosphorous. The addition of tin increases the corrosion resistance and strength of the alloy. The phosphorous increases the wear resistance and stiffness of the alloy. These alloys are notable for their toughness, strength, low coefficient of friction, and fine grain. The phosphorus also improves the fluidity of the molten metal and thereby improves the castability, and improves mechanical properties by cleaning up the grain boundaries. The phosphor bronzes have superb spring qualities, high fatigue resistance, excellent formability and solderability, and high corrosion resistance. They are primarily used for electrical products, other uses include corrosion resistant bellows, diaphragms, and spring washers. Phosphor bronze is used for springs, bolts and various other items used in situations where resistance to fatigue, wear and chemical corrosion are required.

 

ALLOYS

 

PB-1

 

Typical Uses PB1 Phosphor Bronze, offering good shock resistance, coupled with good strength and machinability, plus good corrosion resistance. It is used for producing gears, bearings, heavy load bushes, worm wheels, general engineering components etc; requiring good strength coupled with high shock resistance.

 

Copper Alloys	Standard	Cu	Sn	Pb	Zn	Fe	Ni	P	Al	Mn	Si	Sb	S	Bi	Cr	Imp
PB 1	BS:1400	Rem.	10 Min	0.25	0.05	0.1	0.1	0.5 Min	0.01	-	0.02	-	-	-	-	0.6
Phos. Bz (Grade-2)	IS:28-1985	Rem.	10 Min	0.25	0.05	0.1	0.1	0.5 Min	0.01	-	0.02	-	-	-	-	0.6

 
 

PB-2

 

Typical Uses PB2 Phosphor Bronze, offering good shock resistance, coupled with good strength and machinability, plus good corrosion resistance. It is used for manufacturing heavy duty gears, bearings, bushes, worm wheels, general engineering components requiring good strength coupled with high shock resistance.

 

Copper Alloys	Standard	Cu	Sn	Pb	Zn	Fe	Ni	P	Al	Mn	Si	Sb	S	Bi	Cr	Imp
PB 2	BS:1400	Rem.	11 - 13	0.5	0.3	0.15	0.5	0.15 Min	0.01	-	0.02	-	-	-	-	0.2
Phos. Bz (Grade-5)	IS:28-1985	Rem.	11-13.1	0.5	0.3	0.15	0.5	0.15 Min	0.01	-	0.02	-	-	-	-	0.2