- Anneal: Heat to 1900 - 2050 F and water quench
- Harden: Types 303 and 303 Se cannot be hardened by heat treatment
|
- Excellent corrosion resistance
- Effectively resist attack in atmospheric exposures, sterilizing solutions, most organic and many inorganic chemicals, most dyes nitric acid and foods
- For best corrosion resistance finished parts should be free from scale and foreign particles
|
- Types 303 and 303Se should be heated slowly to 2000-2150 F
- Soaked for a sufficient time then raised to 2200 - 3250 F
- They should not be forged below 1700 F
|
|
- Excellent machinability
- Surface finish on parts made of 303 Se is better than that of regular 303
|
- Type 303 limited formability because of its sulfur content
- Type 303 Se has better formability but it should be limited to mild forming operations
|
- only fair weldability
- can be welded using proper procedures
- Weldability can be improved by using methods that minimize dilution of the weld metal with the melted base metal
- Reducing the time that weld are in the hot-short temperature range and use of Type 312 (29-9) filler metal helps obtain satisfactory results
|
|
