TIN Bronze Alloys

Product Detail

Tin Bronzes: Alloy Nos. C90300, C90500, C90700

   Tin's principal function in these bronzes is to strengthen the alloys. (Zinc also adds strength, but more than about 4% zinc reduces the antifrictional properties of the bearings alloy.) The tin bronzes are strong and hard and have very high ductility. This combination of properties gives them a high load-carrying capacity, good wear resistance and the ability to withstand pounding. The alloys are noted for their corrosion resistance in seawater and brines.

   The tin bronzes' hardness inhibits them from conforming easily to rough or misaligned shafts. Similarly, they do not embed dirt particles well and therefore must be used with clean, reliable lubrication systems. They require a shaft hardness between 300-400 BHN. Tin bronzes operate better with grease lubrication than other bronzes; they are also well suited to boundary-film operation because of their ability to form polar compounds with small traces of lubricant.

   Differences in mechanical properties among the tin bronzes are not great. Some contain zinc as a strengthener in partial replacement for more-expensive tin.

Construction:Tube(Pipe)?Rod(Bar)?Plate(Sheet)

Shape:Round, Square, Flat, Hexagon, Oval,Half-round or Customized

Dimension:Customized

Standard:GB/T,JIS,ASTM, ISO, DIN, BS, NF etc.

Place of origin:Jiangsu, China

Package:Wooden case or as per customer requirement

Surface:as required

MOQ:500kg or Negotiable

Deliver time:According to order's quantity.

Shipment:By sea, by air, DHL, UPS, FedEx etc. or as required

Chemical Composition % by weight:




	C90300			C90500			C90700
Element	Nom	Min	Max	Nom	Min	Max	Nom	Min	Max
Aluminum	-	-	0.005	-	-	0.005	-	-	0.005
Antimony	-	-	0.2	-	-	0.2	-	-	0.2
Copper	88	86	89	88	86	89	89	88	90
Iron	-	-	0.2	-	-	0.2	-	-	0.15
Lead	-	-	0.3	-	-	0.3	-	-	0.5
Nickel	-	-	1	-	-	1	-	-	0.5
Phosphorus	-	-	0.05	-	-	0.05	-	-	0.3
Silicon	-	-	0.005	-	-	0.005	-	-	0.005
Sulfur	-	-	0.05	-	-	0.05	-	-	0.05
Tin	8	7.5	9	10	9	11	11	10	12
Zinc	4	3	5	2	1	3	-	-	0.5

• Applications:

C90300	Bearings, bushings, pump impellers, piston rings, valve components, seal rings, steam fittings, gears.
C90500	Bearings, bushings, pump impellers, piston rings, valve components, steam fittings, gears.
C90700	Gears, bearings, bushings.

• Mechanical Properties(by Continuous Cast )




ASTM B 505/B 505M-2005

	Unit	C90300	C90500	C90700
Brinell Hardness	BH	70	75	105
Tensile Strength	Ksi	44	44	40
	Mpa	303	303	276
Yield Strength	Ksi	22	25	25
	Mpa	152	172	172
Elongation	%	18	10	10