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It is a metallic alloy that has the copper like a base and it can be alloyed with the tin, lead, zinc, aluminum, manganese and iron; they are varying their percentages to give an specific use and right properties to the client´s needs.
What do we use it?
The bronze is an alloyed metal that has the function of absorbing the wearing when it is applied like a part in machinery.
Types of bronze
There are several groups or families of bronze that have their properties and specific characteristics that determine the uses of the parts.
These families can be red bronze, yellow brass, tin bronze, lead bronze, aluminum bronze, manganese bronze and silicon bronze.
From these families, there are groups of the bronze categories like we show in the next chart:
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CDA |
ASTM |
SAE |
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Red Bronzes |
836 |
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B145 (4A)
B371 (4A) |
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40 |
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Valves, bridles, tubing and plumbing accessories, pump frames, impellers, light cranes, hydraulic parts to low pressure. |
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CDA |
ASTM |
SAE |
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Tin bronzes |
905 |
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B143 (1A)
B271 (1A) |
|
62 |
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Bearings, bushings, piston rings, steam accessories, high hardness parts, low speed and lubricated.
Most common in gears, crowns and bearings, high resistance and bigger hardness from red bronzes.
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907 |
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65 |
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CDA |
ASTM |
SAE |
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Lead bronzes |
938 |
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B144 (3D)
B271 (3D) |
|
67 |
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Deep pumps, mechanical loaders, bearings out of lubrication.
Bushings and bearings, they have to work under medium pressure and in construction machinery, pump accessories.
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|
932 |
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B144 (3D)
B271 (3D) |
|
660 |
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CDA |
ASTM |
SAE |
|
Yellow brasses |
836 |
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B146 (6C)
B271 (6C) |
|
41 |
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Battery terminals, radiators accessories, pass valves and ornamental parts. |
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CDA |
ASTM |
SAE |
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Manganese Bronzes |
862 |
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B147 8B)
B271 (8B) |
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430 A |
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Gears, valves, rods, hydraulic accessories, bearings for extra heavy charges and low speed, treats nuts, bridge beams, hydraulic cylinders parts, etc.
Slippers, abrasion resistant nuts and wearing, gears, bearings for extra heavy loaders and low speed, etc
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863 |
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B144 (3D)
B271 (3D) |
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430 B |
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CDA |
ASTM |
SAE |
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Aluminum bronzes |
953 |
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B148 (9B)
B271 (9B) |
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68-B |
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Rough work, cases, nuts, gears, marine equipment.
Rough work for high friction, high temperatures, automotive industry, steel industry, it has malleability to work
Rough work, for high friction, high temperatures, high beating, automotive industry, glass industry and die.
Rough work, for high friction, high temperatures, higher hardness, glass industry, automotive industry. |
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954 |
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B144 (9C)
B271 (9C) |
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|
955 |
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B144 (9D)
B271 (9D) |
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958 |
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