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Stainless Steel 303 |
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| Principal Design Features | 303 is one of the most popular of all the free machining stainless steels. It offers good strength, corrosion resistance and great machinability. It will resist scaling at temperatures up to 1600 F(871 C). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Applications |
Used in an incredibly wide variety of parts both in screw and general machining industries. Applications include hardware, fasteners, valve parts, nozzles and trim.
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Machinability |
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Excellent speeds and feeds are capable with this material. The addition of sulfur causes a very brittle chip. Many companies now offer premium machinability grades, such as CarTech with their Project 70 and 7000 series.
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Forming |
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Welding |
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Although not recommended, welding may be performed if low temperatures are employed. Recommended filler metal is AWS E/ER312. At high temperature, the sulfur in 303 tends to precipitate at the weld boundary resulting in weak and brittle joints. |
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Heat Treatment |
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Forging |
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Hot Working |
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Forging and upsetting may commence once the workpiece has been thoroughly heated to 2100-2300 F (1149-1260 C). It is not recommended to work this material below 1700 F (927 C). Rapid post-work cooling will optimize corrosion performance. |
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Cold Working |
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Minor deformation is possible with this alloy, although it is not its strong point. Type 303 Se is superior in this aspect. |
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Annealing |
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1850-1950 F (1010-1066 C), followed by rapid cooling is the recommended practice. |
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Aging |
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Tempering |
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Not applicable. |
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Hardening |
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This alloy does not respond to hardening by heat treatment. Cold work will raise both the hardness and strength characteristics. |
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Other Physical Props |
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Other Mechanical Props |
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Mechanical Data |
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There is no Mechnical data available for this grade. |
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Disclaimer |
This information is provided "as is" and TriMatic Machine Products,Inc. makes no warranty of any kind with respect to the subject matter or accuracy of the information contained herein. TMMPI specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose. In no event shall TMMPI be liable for any special, incidental, indirect or consequential damages of any kind or any damages whatsoever resulting from loss of use, data, profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use of the information contained herein. This data may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
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Provided by AlloyTech, Inc. All Rights Reserved | ||||||||||||||||||||||||||||||||||||||||||