DIN 17175 13CrMo44 seamless steel pipe/tube applies to seamless tubes including tubes for headers of heat-resistant steels which are used in the construction of boilers,pipe-lines,pressure vessels and equipment for service up to 600 ℃ and at simultaneous high pressures,where the total stress and the relevant scaling conditions can raise or lower the temperature limit.
13CrMo44 steel chemical composition
| Grade | Material | C | Si | Mn | P | S | Cr | Mo |
| 13CrMo44 | 1.7335 | 0.10-0.18 | 0.10-0.35 | 0.40-0.70 | 0.035 | 0.035 | 0.70-1.10 | 0.45-0.65 |
| Grade | Material | Tensile strength N/mm2 | Yield strength thickness,mm | Elongation (L=5do) | Notch impact energy | |||
| ≤16 | >16≤40 | >40≤60 | ||||||
| N/mm2 min | ||||||||
| 13CrMo44 | 1.7335 | 440-590 | 290 | 290 | 280 | 22 | 20 | 34 |
