| Chemical composition | |||||||||
| Steel grade | C | Si | Mn | P | S | Cr | Mo | Al | |
| Steel name | Steel number | max | max | max | max | max | max | max | |
| 195GH | 1.0348 | 0.13 | 0.35 | 0.70 | 0.025 | 0.020 | 0.30 | 0.08 | ≥0.020 |
| P235GH | 1.0254 | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 | 0.30 | 0.08 | ≥0.020 |
| P265GH | 1.0425 | 0.20 | 0.40 | 1.40 | 0.025 | 0.020 | 0.30 | 0.08 | ≥0.020 |
| 20MnNb6 | 1.0471 | 0.22 | 0.15-0.35 | 1.0-1.50 | 0.025 | 0.020 | 0.30 | 0.08 | ≤0.060 |
| 16Mo3 | 1.5415 | 0.12-0.20 | 0.35 | 0.40-0.90 | 0.025 | 0.020 | 0.30 | 0.25-0.35 | ≤0.040 |
| 10CrMo9-10 | 1.7380 | 0.08-0.14 | 0.50 | 0.30-0.70 | 0.025 | 0.020 | 2.0-2.50 | 0.90-1.10 | ≤0.040 |
| 11CrMo9-10 | 1.7383 | 0.08-0.15 | 0.50 | 0.40-0.80 | 0.025 | 0.020 | 2.0-2.50 | 0.90-1.10 | ≤0.040 |
| 25CrMo4 | 1.7218 | 0.22-0.29 | 0.40 | 0.60-0.90 | 0.025 | 0.020 | 3.0-3.30 | 0.50-0.60 | ≤0.040 |
Standard: EN10216-2
Seamless steel tubes for pressure purposes-Technical delivery conditions
Non-alloy steel tubes with specified elevated temperature properties
Applications: for manufacturing pipelines of boilers, vessel equipment
Size range: O.D.:6-168mm W.T.:1-30mm L:max12000mm'
| Mechanical properties | ||||||||
| Steel Grade | Tensileproperties | Tensil | Elongation | |||||
| Steel name | Steel number | Upper yield strength | Strength | A min.% | ||||
| ReHmin for Wall Thickness | Rm | |||||||
| T mm | ||||||||
| T≤16 | 16 | 40 | ||||||
| Mpa | Mpa | Mpa | Mpa | l | t | |||
| 195GH | 1.0348 | 195 | ~ | ~ | 320-440 | 27 | 25 | |
| P235GH | 1.0254 | 235 | 225 | 215 | 360-500 | 25 | 23 | |
| P265GH | 1.0425 | 265 | 225 | 245 | 410-570 | 23 | 21 | |
| 20MnNb6 | 1.0471 | 355 | 345 | 335 | 500-650 | 22 | 20 | |
| 16Mo3 | 1.5415 | 280 | 270 | 260 | 450-600 | 22 | 20 | |
| 10CrMo9-10 | 1.7380 | 280 | 280 | 270 | 480-630 | 22 | 20 | |
| 11CrMo9-10 | 1.7383 | 355 | 355 | 355 | 540-680 | 20 | 18 | |
| 25CrMo4 | 1.7218 | 345 | 345 | 345 | 540-690 | 18 | 15 | |
