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 BALL & SEAT
SPECIALTIES CO.
is an API authorized manufacturer under Specification 11AX.
Our quality system meets API Specification Q1 requirements and as such
is continually monitored and improved to insure the end product meets or exceeds quality requirements.
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| API B1-B2 Cobalt Alloy |
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Cobalt Alloy Grade Specifications
| Ball Specifications |
Seat Specifications |
| Material: |
Alloy #2 |
| Hardness: |
53 - 63 RC |
| Density: |
.316 LBS / CU. IN. |
| Chemical Composition: |
| WC - 16.0 TO 19.0% |
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Cr - 31.0 TO 34.0% |
| C - 2.2 TO 2.7% |
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Mn - 1.0% MAX |
| Fe - 3.0% MAX |
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Si - 1.0% MAX |
| Ni - 2.5% MAX |
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Co - BALANCE |
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| Remarks: |
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| GOOD WEAR, GOOD CORROSION RESISTANCE |
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| Material: |
ALLOY #3 |
| Hardness: |
50 - 57 RC |
| Density: |
.314 LBS / CU. IN. |
| Chemical Composition: |
| WC - 11.0 TO 14.0% |
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Cr - 29.0 TO 33.0% |
| C - 2.0 TO 2.6% |
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Mn - 1.0% MAX |
| Fe - 3.0% MAX |
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Si - 1.0% MAX |
| Ni - 3.0% MAX |
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Co - BALANCE |
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| Remarks: |
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| GOOD WEAR, GOOD CORROSION RESISTANCE |
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