ASTM F899 420B | EN 1.4028
STAINLESS STEEL
ASTM F899 420B | EN 1.4028
Description
ASTM F899 420B is a stainless martensitic chromium steel. This grade shows better spring properties than austenitic or ferritic steel and improved fatigue strength under corrosive stress. Requirement for this is a low-hardened and tempered condition and a shiny, preferably polished surface. In high tempered or annealed condition, the corrosion resistance is reduced.
The alloy has sufficient resistance in moderate, non-chlorine-containing media. Good corrosion resistance can be observed in oxidizing atmospheres at temperatures exceeding 600 °C. Best corrosion resistance can be achieved with polished surface in the quenched and tempered condition.
Applications of ASTM F899 420B
- Rotary Instruments
- Cutter
- Curettes