| Tempered Spring Steel Chemical Specifications | ||
|---|---|---|
| ASTM A684 | ||
| Alloy | Blue Tempered and Polish | Scaleless Blue Tempered |
| UNS Number | G10950 | G10750 |
| Specs | ASTM A684 | ASTM A684 |
| Rockwell | C48-51 | C44-47 |
| Chemical Composition | ||
| Carbon | .90 - 1.04 | .70 - .80 |
| Maganese | .30 - .50 | .50 - .70 |
| Phosphorus (max) | 0.035 | 0.035 |
| Sulfer (max) | 0.04 | 0.04 |
| Silicon | .15 - .30 | .15 - .30 |
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