Material – EN 1.7779
Standard Specification for Seemless Steel Tubes for Pressure Purposes
Group - Ferrous Mild Steel Alloys
Sub Group - EN 1.7779 Seemless Steel Tubes for Pressure Purposes
Application - Intended for Valve, Pump, General Engineering, Automotive and Other Industries
Grade Belongs to the Industry - Steel and Tube
| Chemical Composition | ||
|---|---|---|
| Carbon | C % | 0.170 - 0.230 |
| Silicon | Si % | 0.150 - 0.350 |
| Manganese | Mn % | 0.300 - 0.500 |
| Phosphorus | P % | 0.025 max. |
| Sulphur | S % | 0.010 max. |
| Chromium | Cr % | 3.000 - 3.300 |
| Nickel | Ni % | 0.300 max. |
| Molybdenum | Mo % | 0.500 - 0.600 |
| Aluminium | Al % | 0.040 max. |
| Copper | Cu % | 0.300 max. |
| Vanadium | V % | 0.450 - 0.550 |
| Iron | Fe % | Balance |
| - | - | - |
| - | - | - |
| - | - | - |
| Heat Treatment |
|---|
| Quenching + Tempering |
| Mechanical Properties | |
|---|---|
| Tensile Strength in Mpa | 740 - 880 |
| Yield Strength in Mpa | 590 min. |
| Elongation in % | 14 min. |
| Reduction of Area in % | - |
| Hardness in BHN | - |
| Impact in Joule | 27 J @ RT |
Cross Reference Table
| Material | Standard | Country | Grade Belong to the Industry |
|---|---|---|---|
| 1.7779 | EN | European Union | Steel and Tube |
| 1.7779 | DIN | Germany | Steel and Tube |
| 20 CrMoV 13 5 | DIN | Germany | Steel and Tube |
| 20 CrMoV 13 5 | MSZ | Hungary | Steel |
| 15423 | CSN | Czech Republic | Steel |
| - | - | - | - |
| - | - | - | - |