C90700 SAE65 Gear Bronze / C907 High Tin Bronze


C90700 SAE65 Gear Bronze / C907 High Tin Bronze
The Bronze Alloy of choice for worm gears is C90700 (SAE65) High Tin Bronze. This has been the predominant bronze alloy for gear manufacturing throughout the 20th century, and continues to prevail today. High Tin Bronze Alloys include those which contain at least 6% tin. The addition of tin to these alloys is designed to strengthen the bronze.
Shapes


Applications



- Gears
- Worm Gears
- Bearings for Heavy Loads
- Gear Boxes
- Speed Reducers
- Valve Bodies
- Worm Wheels
Specifications

CHEMICAL COMPOSITION:
(%max., unless shown as range or min.)
NOTE: Information courtesy of Copper.org
Cu(1) | Al | Sb | Fe | Pb | Ni(2) | P(3) | Si | S | Sn | Zn | |
Min./Max. | 88.0-90.0 | .005 | .20 | .15 | .50 | .50 | .30 | .005 | .05 | 10.0-12.0 | .50 |
Nominal | 89.0 | - | - | - | - | - | - | - | - | 11.0 | - |
MECHANICAL PROPERTIES:
(measured at room temperature, 68 F (20 C)
NOTE: Information courtesy of Copper.org
Temper | Section Size |
Cold Work |
Typ/ Min |
Temp | Tensile Strength |
Yield Strength (0.5% ext. under load) |
El | Rockwell Hardness |
Brinell Hard. |
Shear Strength |
Fatigue Strength* |
||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in. | % | F | ksi | ksi | % | B | C | F | 30T | 500 | 3000 | ksi | ksi | ||||||
mm. | C | MPa | MPa | MPa | MPa | ||||||||||||||
As Sand Cast | |||||||||||||||||||
M01 | 0.0 | 0 | TYP | 68 | 44 | 22 | 20 | - | - | - | - | 80 | - | - | 25 | ||||
0.0 | 20 | 303 | 152 | 20 | - | - | - | - | 80 | - | - | 172 | |||||||
M01 | 0.0 | 0 | SMIN | 68 | 35 | 17 | 10 | - | - | - | - | 65 | - | - | - | ||||
0.0 | 20 | 241 | 117 | 10 | - | - | - | - | 65 | - | - | - | |||||||
As Centrifugal Cast | |||||||||||||||||||
M02 | 0.0 | 0 | TYP | 68 | 55 | 30 | 16 | - | - | - | - | 102 | - | - | - | ||||
0.0 | 20 | 379 | 207 | 16 | - | - | - | - | 102 | - | - | - | |||||||
As Continuous Cast | |||||||||||||||||||
M07 | 0.0 | 0 | SMIN | 68 | 40 | 25 | 10 | - | - | - | - | - | - | - | - | ||||
0.0 | 20 | 276 | 172 | 10 | - | - | - | - | - | - | - | - | |||||||
As Permanent Mold Cast | |||||||||||||||||||
M05 | 0.0 | 0 | TYP | 68 | 55 | 30 | 16 | - | - | - | - | 102 | - | - | - | ||||
0.0 | 20 | 379 | 207 | 16 | - | - | - | - | 102 | - | - | - | |||||||
As Centrifugal Cast | |||||||||||||||||||
M02 | 0.0 | 0 | SMIN | 68 | 50 | 28 | 12 | - | - | - | - | 95 | - | - | - | ||||
0.0 | 20 | 345 | 193 | 12 | - | - | - | - | 95 | - | - | - | |||||||
Product | Specification |
Centrifugal | ASTM B427 SAE J462, J461 |
Continuous | ASTM B505 SAE J461, J462 |
Ingot | ASTM B30 |
Sand | ASTM B427 SAE J461, J462 |