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Results of static tensile test of specimens of butt welds without heat treatment after welding (S samples) and butt welds heated with acetylene-oxygen flame to ≈ 730°C (W samples)
| Item no. | Designation of joint specimen | a×b (mm) | S0 (mm2) | Fm (N) | Rm (MPa) | Rm avg (MPa) | Rm (MPa) according to PN-EN 10088-2 |
|---|---|---|---|---|---|---|---|
| 1. | Sb | 19.94 × 1.98 | 39.5 | 2,6600 | 673* | 727 | 700–900 |
| 2. | Sc | 19.94 × 1.94 | 38.6 | 28,400 | 736 | ||
| 3. | Sd | 19.94 × 1.96 | 39.1 | 30,200 | 772 | ||
| 4. | Wb | 19.95 × 1.91 | 38.1 | 27,200 | 714 | 739 | |
| 5. | Wc | 19.8 × 1.89 | 37.4 | 29,400 | 786 | ||
| 6. | Wd | 19.86 × 1.91 | 37.9 | 27,200 | 718 | ||
Results of the analysis of the chemical composition of tested materials
| Cont.% by weight | Steel grade 1.4062 (X2CrNi22-2) | Wire G 22 9 3 N L | Weld in the joint 1.4062+1.4062 | |
|---|---|---|---|---|
| Certificate No. 51513524 | Analysis results by LECO | Certificate No. 102004 | Analysis results by LECO | |
| C | 0.020 | 0.025 | 0.1 | 0.025 |
| Si | 0.450 | 0.30 | 0.5 | 0.41 |
| Mn | 1.340 | 1.33 | 1.7 | 1.68 |
| P | 0.023 | 0.030 | 0.016 | 0.030 |
| S | 0.001 | 0.015 | 0.001 | 0.013 |
| Cr | 22.800 | 22.05 | 22.9 | 22.60 |
| Ni | 2.640 | 2.46 | 8.8 | 7.68 |
| Mo | 0.210 | 0.19 | 3.1 | 1.86 |
| Nb | – | 0.03 | – | 0.03 |
| Cu | – | 0.23 | <0.1 | 0.017 |
| N | 0.216 | – | 0.16 | – |
| Co | – | 0.05 | – | 0.06 |
| V | – | – | – | 0.07 |
| W | – | – | – | 0.01 |