GNEE Steel is a proud 303 stainless steel bar supplier of steel products and services. Grade 303 represents the optimum in machinability among the austenitic stainless steels. It is primarily used when production involves extensive machining in automatic screw machines. Machinability Rating (compared to B1212) is approximately 78%. Grade 03 is also available as a "Ugima" Improved Machinability grade, with machinability even higher than that of the standard 303.
Products partially or completely constructed of 303 include:
Aircraft fittings
Bushings
Gears
Nuts and Bolts
Screws
Bushings
| STOCKING DIAMETERS | ½” TO 13” |
|---|---|
| MATERIAL LENGTHS | UP TO 12’ |
| UNS | TYPE | AMS | ASTM | FEDERAL | CHARACTERISTICS |
|---|---|---|---|---|---|
| S30300 | 303 | 5640 | A-314 A-582 | – | Atmospheric corrosion resistance with improved mechanical properties. 303 is a 300 Grade with increased sulfur for good machinability. |
| C | MN | P | S | SI | CR | NI | MO | CU | OTHER | M/NM |
|---|---|---|---|---|---|---|---|---|---|---|
| .15 | 2. | .2 | 15 Min. | 1. | 17. – 19. | 8. – 10. | .6 | .5 | NM |
APPLICATIONS
Alloy 303 is frequently used in applications that require parts to be heavily machined. Some examples include:
Nuts and bolts
Aircraft fittings
Gears
Screws
Shafts
Electrical switchgear components
Bushings
STANDARDS – ALLOY 303
ASTM/ASME ……………. UNS S30300
EURONORM ……………. FeMi35Cr20Cu4Mo2
DIN ………………………… 2.4660
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