Low-alloyed ferritic heat resisting grade with improved scaling resistance. Uncritical regarding embrittlement at service temperatures. Applied for e.g. furnace equipment, thermal boiler components, grids, burner nozzles, conveying parts, thermowells.
Chemical Compositions*
| Element | % Present (in product form) |
C, H, P, L | |
Carbon (C) | 0.12 |
Silicon (Si) | 0.70 - 1.40 |
Manganese (Mn) | 1.00 |
Phosphorous (P) | 0.040 |
Sulfur (S) | 0.015 |
Chromium (Cr) | 12.00 - 14.00 |
Aluminium (Al) | 0.70 - 1.20 |
Iron (Fe) | Balance |
Mechanical properties (at room temperature in annealed condition)
| Product Form | |||
| C, H, P | L | ||
Thickness a or diamter d (mm) | a ≤ 12 | d ≤ 25 | |
Hardness HB max. | 192 | ||
Proof Strength | Rp0.2 N/mm2 | 250 | |
Rp1.0 N/mm2 | - | ||
Tensile Strength | Rm N/mm2 | 450 - 650 | |
Elongation min. in % | Long Products | 15 | |
| Flat Products | 0.5 ≤ a/d < 3 | 13 | |
3 ≤ a/d | 15 | ||
Applications:
1.4724 Stainless ferritic high temperature steels are mostly used in high temperature applications with sulphurous atmospheres and/or low tensile loads such as for installations within:
Furnace equipment
Thermal boiler components
Grids
Burner nozzles
Conveying parts
Thermowells
Chemical industry (drums)
Power industry (coal burners)
Metalworking industry (heat treatment boxes)
