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303 Stainless Steel, Stainless Steel Alloy 303, Stainless Steel Alloy 1.4305
Alloy 303 was specially designed to exhibit improved machinability while maintaining good mechanical and corrosion resistant properties Due to the presence of sulfur in the steel composition, Alloy 303 is the most readily machineable austenitic stainless steel. 303 Stainless Steel has the compositional properties that make it the ideal candidate. 303 Stainless is especially optimum for extensive machining practices because of the increased level of sulfur present in its composition.
Applications of 303 Stainless Steel: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
Chemical Properties:
| % | Cr | Ni | C | Si | Mn | P | S | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 303 | min: 17.0 max:19.0 |
min: 8.0 max: 10.0 |
0.15 max |
1.00 max |
2.0 max |
0.20 max |
0.15 min |
0.75 | balance |
Mechanical Properties:
| Grade | Tensile Strength ksi (min.) |
Yield Strength 0.2% Offset ksi (min.) |
Elongation - % in 50 mm (min.) |
Hardness (Brinell) MAX |
Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 303 | 75 | 30 | 35 | 228 |
Physical Properties:
| Denstiy lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Electrical Resistivity mW-in | Thermal Conductivity BTU/hr-ft-°F | Melting Range |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| at 68 °F | at 68 – 212°F | at 68 – 932°F | at 68 – 1450°F | at 68°F | at 212°F | at 392°F | at 752°F | at 1112°F | at 1472°F | at 68 – 212°F | |
| 0.29 | 9.2 | 10.4 | 10.9 | 28.3 | 30.7 | 33.8 | 39.4 | 43.7 | 47.6 | 113.2 | 2552°F |
Stainless steel type 303 is specifically designed to exhibit improved machinability. It is a non-magnetic austenitic stainless steel that can not be hardened by heat treatment，All of the Type 303 stainless steel that we source meets or exceeds national and international standards and specifications from organizations like AMS, ASTM, EN, and DIN.please contact us by email [email protected] or chat with our liveperson if you have any needs about ss303 ,we will do our best to help you as soon as possiable
