In this e-Book you will learn more about the parameters that can affect the reliable performance of metals intended for high temperature service. Knowing the temperature is not enough!
Stainless steels and nickel alloys are widely used because of their resistance to aqueous corrosion but there are also grades in both families of alloys that are most useful for high temperature service. Generally “high temperature” is considered to be above 500 Deg C as it is above this point that creep becomes a mechanical property determinant. Each grade may have its own upper temperature limit, but very few may be used at 1200 Deg C as this approaches the melting point of many industrial metals.
The temperature range of interest is thus 500 to 1200 Deg C.
The selection of materials for each application is often a compromise between demands on mechanical properties, corrosion resistance and micro-structural stability.
310S in its various product forms is the most widely stocked of the recognised high temperature stainless steels and as such it is the workhorse of the range.
253MA is another stainless steel intended for elevated temperature service and it offers useful creep strength as well as resistance to attack over a wide spectrum of environments.
In respect of alloys with higher nickel contents Alloys 800, 800HT and 600 are some of the metals used to address specific elevated temperature problems.