| Grade Marking | Nominal Size | Mechanical Properties | Hardness Rockwell | |||||
|---|---|---|---|---|---|---|---|---|
| Proof Load | Yield Str. | Tensile Str. | Elong. % | R.A. % | Min | Max | ||
 |
1⁄4” – 21⁄2“ | 105 | 109 | 125 | 16 | 50 | C26 | C36 |
| 21⁄2“+ | 95 | 99 | 115 | 16 | 45 | C22 | C33 | |
| Grade Marking | Nominal Size | Mechanical Properties | Hardness Rockwell | |||||
|---|---|---|---|---|---|---|---|---|
| Proof Load | Yield Str. | Tensile Str. | Elong. % | R.A. % | Min | Max | ||
|
1⁄4” – 21⁄2“ | 105 | 109 | 125 | 16 | 50 | C26 | C36 |
| 21⁄2“+ | 95 | 99 | 115 | 16 | 45 | C22 | C33 | |
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