bedra61700

Aluminum Bronze

Characteristics：

bedra61700 is a medium to high strength bronze that offers a combination of good oxidation and corrosion resistance in seawater and other aggressive environments. It has good ductility, is easily machined, and exhibits excellent wear and anti-galling properties.

Typical applications:

bedra61700 is widely used for wear and corrosion resistant applications, such as bolts, nuts, bearing races, bearings, bushings, gears, pump parts, valve guides, valve seats, valve bodies, and marine hardware.

Standardization and composition

UNS	/
EN	/
JIS	/
GB	T61700 (QAl9-2)
Cu	balance
Al	8.0-10.0%
Mn	1.50-2.50%
Sn	≤ 0.10%
Fe	≤ 0.50%
Zn	≤ 1.0%
Si	≤ 0.10%
Pb	≤ 0.03%

Physical properties①

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

Density (g/cm³)	7.6
Metling temperature (℃)	1061
Electrical conductivity (%IACS)	14
Thermal conductivity (W / m x K)	71.2
Coefficient of thermal expansion② (10-6/K)	17
Modulus of elasticity (GPa)	90.2

Fabrication Properties

Note③：C37700 = 100% Note④：C36000 = 100%

Cold workability	Good
Hot workability	Good
Brazing	Poor
Resistance welding	Good
Forgeability rating③	75%
Machinability rating④	50%

Mechanical Properties⑤

Note⑤：bedra technical standards

Temper	Diameter (mm)	Tensile Strength (MPa min.)	Yield Strength (MPa min.)	Elongation (% min.)	Hardness (HBW min.)
H04	4.0≤Φ≤45	515	/	14	120
M30	45≤Φ≤120	470	/	24	110

Dimension Tolerance and Delivery Form for Rods

Note⑥：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)	Tolerance⑥ (mm)	Ovality (mm)	Length (mm. max.)	Straightness (mm/m max.)
4.0 ≤ Φ 10	0.12	0.06	3600	1.0
10 ≤ Φ 18	0.16	0.08	3600	1.0
18 ≤ Φ 50	0.30	0.15	4000	1.0
50 ≤ Φ 60	0.40	0.20	4000	1.0
60 ≤ Φ 70	0.80	0.40	4000	3.0
70 ≤ Φ 90	1.20	0.60	3000	3.0
90 ≤ Φ ≤ 120	2.00	1.00	2000	5.0