Stainless Steel 317L
18.00 – 20.00
11.00 – 15.00
3.0 – 4.0
General characteristics of Stainless Steel 317L
Type 317L is a molybdenum-bearing austenitic stainless steel with somewhat superior corrosion resistance, particularly to pitting, to 316L – due to its higher molybdenum content. This is evident in environments containing chlorides or other halogens, for example marine atmospheres.
This grade may be used in air pollution control equipment – flue gas desulfurization systems for example, in chemical and petrochemical processing and in the pulp and paper industry.
Type 317L should be forged in the temperature range 2200/1700ºF (1205/925ºC) and parts should be water quenched or cooled as rapidly as possible, depending upon section size. For optimum corrosion resistance, parts should be annealed after forging.
Parts should be annealed at 1900/2000ºF (1040/1095ºC) and water quenched.
Type 317L machines as do other austenitic stainless steels, to give tough, stringy chips. Slow speeds, heavy feeds and sharp tooling will serve to improve machinability.
Type 317L can be welded by shielded fusion and resistance methods, but oxyacetylene welding should be avoided to prevent carbon pick up in the welds. There is little risk of cracking in the welds. Should filler metal be required, type 317L rods are recommended
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