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Heat-resistant structural steels
Quality 1.7709
Grade
20CDV5.7
Material Specifications
EN 10269, DIN 17240, AD 2000 W 0, AD 2000 W 7, TRD 106, TRB 100, TLV 9186-01
Treatment
annealed, peeled
Mechanical Specifications
700 - 850 N/mm²
Shape
Round
10,68 mm - 75,75 mm
Chemical Analysis
| C: | 0,17 - 0,25 % |
| Cr: | 1,2 - 1,5 % |
| Mn: | 0,4 - 0,8 % |
| Mo: | 0,55 - 0,8 % |
| Ni: | max. 0,6 % |
| P: | max. 0,025 % |
| S: | max. 0,03 % |
| Si: | max. 0,4 % |
| V: | 0,2 - 0,35 % |
Application
The material 1.7709 is a heat-resistant structural steel with the elements chromium and vanadium. 1.7709 is used for connecting elements in oil and chemical plants, among others.