| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. Sample Details | |||
| A1 | Sample Identification & Properties Acceptance: Sample ID clearly marked, diameter measured to 0.05 mm, gauge length = 5.65√So (where So = original cross-sectional area) | IS 1608:2005 Section 3 | OK NC NA |
| A2 | Test Machine Calibration Acceptance: Machine accuracy Class 1 per IS 1608, calibration valid within 12 months, calibration certificate available | IS 1608:2005 Section 4 | OK NC NA |
| A3 | Sample Cross-Section Area Calculation Acceptance: CSA (mm²) = π × d² / 4, diameter measured at 3 points, average used | IS 1608:2005 Section 3.2 | OK NC NA |
| B. Tensile Test Results (IS 1608:2005) | |||
| B1 | Yield Stress / 0.2% Proof Stress Acceptance: Fe 500: YS ≥ 500 MPa; Fe 500D: YS ≥ 500 MPa; E250: YS ≥ 250 MPa | IS 1608:2005 Section 5.1; IS 1786:2008 Table 1 | PASS FAIL NA |
| B2 | Ultimate Tensile Stress (UTS) Acceptance: Fe 500: UTS ≥ 545 MPa; Fe 500D: UTS ≥ 565 MPa; E250: UTS ≥ 410 MPa | IS 1608:2005 Section 5.2; IS 1786:2008 Table 1 | PASS FAIL NA |
| B3 | Total Elongation at Fracture Acceptance: Fe 500: ≥ 12%; Fe 500D: ≥ 16%; E250: ≥ 23% | IS 1786:2008 Table 1 | PASS FAIL NA |
| B4 | UTS to YS Ratio Acceptance: Fe 500: ≥ 1.05; Fe 500D: ≥ 1.08 | IS 1786:2008 Table 1 | PASS FAIL NA |
| B5 | Tensile Test Verdict Acceptance: All parameters within specification limits | All items B1-B4 | PASS FAIL NA |
| C. Bend Test (IS 1599:1985) | |||
| C1 | Bend Test Specimen Preparation Acceptance: Specimen length ≥ 8 × mandrel diameter, no stress concentrations, smooth transition | IS 1599:1985 Section 3 | OK NC NA |
| C2 | Mandrel Diameter Selection Acceptance: For Fe 500D ≤ 20 mm: 3d mandrel (d = bar diameter); For > 20 mm: 4d mandrel | IS 1786:2008 Table 4; IS 1599:1985 Section 4 | OK NC NA |
| C3 | Bend Angle Achieved Acceptance: Bend angle = 180° ± 5° | IS 1599:1985 Section 4 | OK NC NA |
| C4 | Outer Radius Crack Check Acceptance: No crack visible on outer radius at 180° bend. Accept if no crack ≥ 3 mm | IS 1599:1985 Section 6; IS 1786:2008 Table 4 | PASS FAIL NA |
| C5 | Bend Test Verdict Acceptance: Specimen bent to 180° with no cracks on outer radius | All items C1-C4 | PASS FAIL NA |