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303 stainless steel processing performance


Welding: Although the cutting grade is not recommended to do welding processing, but also can be welded, but a little difficult. The alloy 303 may be welded to the electrode 310 of the alloy and should be annealed after welding to dissolve the precipitated carbides, thereby increasing the resistance to grain intergranular corrosion of the material.

Machining: The common processing methods used to process mild steel can also be used for processing. Annealing conditions and hardness range of 200-240 Brinell under the conditions, can achieve high processing rate. However, the improvement is necessary in the processing process, used to adjust the characteristics of a variety of stainless steel.

Annealing temperature: In order to obtain maximum ductility, 303 should be annealed at a temperature range of 1800 – 2000 ° F (982-1043 ° C) near the upper limit. In order to avoid the occurrence of harmful carbides, the material should be cooled by water. Material should be avoided as much as possible in the range of 800 – 1500 ° F (427 -816 ° C).


Hardening temperature: Alloy 303 is austenitic stainless steel and can not be hardened by heat treatment.

Structure: Alloy 303 is austenite at any temperature. When heated to 800 – 1500 ° F (427 -816 ° C), the carbonate will precipitate around the grain boundary. When the annealing is carried out, these carbides will be re-dissolved.

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