| Test programme A for machined test pieces and bolts with a shank area less than the stress area for strength grades |
Test programme B for full size bolts for strength grades |
|||||
|---|---|---|---|---|---|---|
| Test group |
Mechanical property | Ref. | Test method | 4.6 4.8 | 4.6 4.8 | |
| I | Tensile strength Rm | A.2 | Tensile test | ⬤ ⬤ | ⬤ ⬤ | |
| Brinell hardness HB | A.3 | Brinell hardness test | ⊕ ⊕ | ⊕ ⊕ | ||
| Rockwell hardness HR | A.4 | Rockwell hardness test | ◯ ◯ | ◯ ◯ | ||
| Vickers hardness HV | Vickers hardness test | ◯ ◯ | ◯ ◯ | |||
| II | Yeild point stress Re | A.2 | Tensile test | ◯ ◯ | ◯ ◯ | |
| Stress under proof load | A.6 | Proof load test | ◯ ◯ | |||
| III | Precentage elongation after fracture A | A.2 | Tensile test | ⬤ ⬤ | ⬤ ⬤ | |
| Strength under wedge loading | A.7 | Wedge loading test | ⬤ ⬤ | |||
| IV | Head soundness | A.8 | Head soundness test | ⬤ ⬤ | ⬤ ⬤ | |
⬤
⊕
◯
See Clause 11.