bedra92710

High Leaded Tin Bronze

Characteristics：

bedra92710 is a high-leaded tin bronze alloy with excellent machinability and good lubricity due to its lead content. High-leaded tin bronzes are ideal for bearing applications.

Typical applications:

It is widely used for general-purpose bearings under moderate pressure, wear-resistant components for rod bushings and wedges, as well as pump impellers and bodies. Additionally, it is employed in steel-backed automotive and aero-engine bushings that are prone to poor lubrication.

Standardization and composition

UNS	C92710
JIS	LBC2
GB	ZCuSn10Pb5
Cu	balance
Pb	4.0-6.0%
Sn	9.0-11.0%
Zn	≤ 1.0%
P	≤ 0.05%
Fe	≤ 0.3%

Physical properties①

Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.

Density (g/cm³)	8.91
Metling temperature (℃)	977
Electrical conductivity (%IACS)	12
Thermal conductivity (W / m x K)	58.2
Coefficient of thermal expansion② (10-6/K)	17.3
Modulus of elasticity (GPa)	100

Fabrication Properties

Note③：C36000 = 100%

Cold workability	Good
Hot workability	Poor
Brazing	Excellent
Resistance welding	Not Recommended
Machinability rating③	70%

Mechanical Properties④

Note④：bedra technical standards

Temper	Diameter (mm)	Tensile Strength (MPa min.)	Yield Strength (MPa min.)	Elongation (% min.)	Hardness (HBW min.)
M07	15 ≤ Ф ≤ 100	245	110	10	70

Dimension Tolerance and Delivery Form

Note⑤：The tolerances listed in the table are specified as all plus or all minus. When tolerances are specified as plus and minus (±), half the values given.

			Straight bar
Diameter (mm)	Tolerance⑤ (mm)	Ovality (mm)	Length (mm. max.)	Straightness (mm/m max.)
15 ≤ Φ 30	0.1	0.05	4000	0.5
30 ≤ Φ 60	0.2	0.10	4000	0.5
60 ≤ Φ 80	1.0	0.50	4000	1.0
80 ≤ Φ ≤ 100	1.6	0.80	3000	1.0