Gun Metal Castings, Gunmetal Castings, Manufacturer, Mumbai, India

Leaded Tin Bronze (Gun Metal)

Leaded Tin bronzes offer good machinability and retain favorable thermal conductivity and lubricity due to their lead content. The lead content in these alloys is typically between 7 percent and 15 percent. Alloy C93200 is the most common alloy in the family and is used in many bearing applications.

Available AlloysShow All / Hide All
FAMILY	ALLOY	DESCRIPTION
Leaded Tin Bronze	C93200 (SAE 660)	C93200 Bearing Bronze is considered the "standard" bearing material for light duty. The alloy offers a unique combination of easy machining with good strength, hardness and wear resistance. Typical applications include bearings, washers, bushings and automotive fittings.
Leaded Tin Bronze	C93200 (SAE 660)	Bearing Bronze is considered the standard bearing material for light duty applications. While it is easily machined, the bronze alloy is hard, strong and resistant to wear. It also conforms well to journal irregularities and is less dependent on lubrication than other alloys. The alloy has reasonable corrosion resistance to seawater and brine.

Bearing Bronze Properties

Bearing Bronze Properties
Tensile Strength, min	241 MPa
Yield Strength @ .5% ext under load min	138 MPa
Elongation in 2 in. or 50 mm min, %	10
Brinell Hardness, min	N/A
Machinability Rating	70%

Chemical Composition
Cu%	Sn%	Pb%	Zn%	Fe%	Ni%	Sb%	P%	S%	AI%	Mn%	Si%
81.00- 85.00	6.30- 7.50	6.00- 8.00	2.00- 4.00	0.20	*1.00	0.35	1.5	0.08	0.005	N/A	0.005

*In determining copper minimum, copper may be calculated as copper plus nickel

Marine: Marine defence ship applications requiring low magnetic permeability, anchor chains, anchors, instrument housing, valve blocks and valve stems.

Typical Uses :-

Automotive: Automotive Fittings
Fasteners: Washers
Industrial: General Purpose Bushings, Bearings, Insert Bearings, Pump Fixtures, Fittings, Thrust Washers, Pumps, Bushings, Machine Parts, Main Spindle Bearings, Fuel Pump Bushings, Water Pump Bushings, Hydraulic Press Main Lining, Diesel Engine Wrist Pin Bushings, Fuel Pump Bearings, Trunion Bearings, Roll Neck Bearings, Rolling Mill Bearings, Linkage Bushings for Presses, Hydraulic Press Stuffing Box, Forging Press Toggle Lever Bearings, Bearings for Cranes, Machine Tool Bearings, Pump Impellers.