ES HF 40 Mainly be used for surfacing sealing surface of high pressure valves that work temperature below 600°C .
Depend on elements of Si, Mo, Nb, Ni, V to intensify the deposited metal to be a kind of austenite matrix which with few ferrites and it has higher high temperature hardness,good heat stability and it has good performance of high temperature abrasion-resisting, heat fatigue resistance and erosion resistance.
The deposited metal will be the longer of the aging time the better the abrasion-resisting and more hardness.
Notice:
* The rod should be redrying at 250 °C for 1 hour before use.
To guarantee hardness, the deposited metal should not be lower than 5 mm after machining & should not be too high to avoid cracks.
