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C91700


Bronze Alloys -> C91700 -> All Formations

     

 

 

General Characteristics 

C91700 is a medium strength casting alloy. It has a good combination of strength, ductility and resistance to corrosion and wear. Its typical tensile strength is 60 ksi in the as-cast condition. Typical applications include gears and worm wheels.

 

 

 

Typical chemical composition 

Weight % 

Cu(1) 

Al 

Sb 

Fe 

Pb 

Ni+Co 

P(2) 

Si 

S 

Sn 

Zn 

minimum 

84.00 

-- 

-- 

-- 

-- 

1.20 

-- 

-- 

-- 

11.30 

-- 

maximum 

87.00 

.005 

.20 

.20 

.25 

2.00 

.30 

.005 

.05 

12.50 

0.25 

(1)     In determining Cu-min., Cu may be calculated as Cu + Ni. 

(2)     For continuous castings, P shall be 1.5% max.  

Note: Cu + sum of named elements, 99.4% min.

 

 

Physical properties 

Characteristics 

 

English 

Metric 

Nominal density  

20°C   /   68°F 

0.316 lbs/in3 

8.75 g/cm3 

Melting range 

Liquidus 

1859 °F 

1015 °C 

Solidus 

1563 °F 

851 °C 

Specific heat  

20°C   /   68°F 

0.09 BTU/lb - °F 

377 J/KG- °K 

Coefficient of thermal expansion 

68°F – 392°F 

20°C – 200°C 

9.0 micro in/in- °F 

16.2 micro m/m- °K 

Thermal conductivity  

20°C   /   68°F 

40.8 BTU/ft- hr - °F 

70.6 W/m - °K 

Electrical resistivity 

20°C   /   68°F 

172.4 nΩ ∙ m 

Electrical conductivity 

Volumetric: 

20°C   /   68°F 

10% IACS 

 
 
 

Mechanical properties 

Temper 

Tensile 

Hardness 

 

Ultimate 

Yield 

Elongation in 50 mm (2 in.) 

Rockwell B 

 

KSI 

MPa 

KSI 

MPa 

% 

 

As Sand cast - 

M01 

303 

44 

152 

22 

16 

52 

As Centrifugal cast – M02 

414 

60 

221 

32 

16 

67 

As Permanent Mold cast – M05 

414 

60 

221 

32 

16 

67 

 
 

Specifications

Centrifugal / Sand Castings:

·         ASTM – B427

Ingot:

·         ASTM – B30

.

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