Seamless Tube of Heat-Resistant Steels
Standard：DIN 17175—-German Industrial Standard
Purpose: Pipe for boilerindustry.
The main production steel grades:
St35.8、St45.8、15Mo3、13CrMo44、10CrMo910 etc.
After consultation, can also supply other grades of steel pipe.
Mechanicalproperties：
| Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| DIN 17175 | St35.8 | 360～480 | ≥235 | ≥25 |
| St45.8 | 410～530 | ≥255 | ≥21 | |
| 15Mo3 | 450～600 | ≥270 | ≥20 | |
| 13CrMo44 | 440～590 | ≥290 | ≥20 | |
| 10CrMo910 | 450～600 | ≥280 | ≥18 |
Chemical composition:
| Standard | Grade | Chemical Composition | |||||
| C | Si | Mn | P、S | Cr | Mo | ||
| DIN 17175 | St35.8 | ≤0.17 | 0.10～0.35 | 0.40～0.80 | ≤0.030 | / | / |
| St45.8 | ≤0.21 | 0.10～0.35 | 0.40～1.20 | ≤0.030 | / | / | |
| 15Mo3 | 0.12～0.20 | 0.10～0.35 | 0.40～0.80 | ≤0.030 | / | 0.25～0.35 | |
| 13CrMo44 | 0.10～0.18 | 0.10～0.35 | 0.40～0.70 | ≤0.030 | 0.70～1.10 | 0.45～0.65 | |
| 10CrMo910 | 0.08～0.15 | ≤0.50 | 0.40～0.70 | ≤0.030 | 2.00～2.50 | 0.90～1.20 | |