From cutlery to turbine blades, alloy SST-410 is prized as a metal that can obtain high mechanical properties with heat treatment. As a martensitic steel alloy it is also used for more than cooking utensils.

Even at temperatures over 1100 F, SST-410 can maintain its impact strength. It also is not as susceptible to corrosion or scaling at high temperatures.

Tough, draggy chips are often produced during machining of 410. It also tends to produce a heavy buildup. When machined with annealing, it does respond better if it has first be either cold drawn or heat treated.

It responds well to welding, especially when annealing is done once welding has finished. This will maintain alloy SST-410’s ductility. Also, to avoid cracking, it is best to pre-heat the material before welding is attempted.

Cold forming or cold working is one of the best methods for working with stainless steel 410. It can be hot worked as long as proper temperatures are maintained; 2000 to 2200 F, with the temperature maintained above 1650 F at all times during working.

When annealing is used, temperatures should be maintained from 1200 to 1400 F. Following annealing, air cooling should be employed for SST-410.

For tempering air cooling or furnace cooling can be used to ensure a proper degree of hardness. The hardening process should be done at a temperature that falls within the range of 1750 to 1850 F. Following hardening the material will need to be oil quenched for the optimal degree of hardness.

Alloy SST-410 can be found in valve components and bushings. It is also used in the manufacture of buckets and fasteners, as well as certain types of screens.

To learn more about the stainless steel alloy SST-410.