SUS303
Characteristics
With sulphur added to SUS304, SUS303 has the best machinability in austenitic stainless steels.
Although sulphur improves machinability, it slightly reduces corrosion resistance. Therefore, its corrosion resistance is lower than SUS304.
Stock Form and Sizes
◆1000mm ◎2000mm ▲3000mm ■3500mm ●4000mm ★2500mm～3990mm
Cold finished round bars
Specification：JIS G4318、ASME A582、EN 1.4305
*3mm-20mm are SUS303Cu
| Size 2〜8 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 2.5 | 3 | 3.5 | 4 | 4.4 | 5 | 5.3 | 5.5 | 6 | 6.35 | 7 | 7.1 | 8 | 8.4 |
| ◎ | ◎ | ◎ | ◎ | ◎ | ▲ | |||||||||
| Size 8〜15 | ||||||||||||||
| 8.95 | 9 | 9.52 | 10 | 10.8 | 11 | 11.3 | 12 | 12.7 | 13 | 14 | 14.3 | 14.6 | 15 | 15.87 |
| ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ||||||||
| Size 16〜24 | ||||||||||||||
| 16 | 16.3 | 17 | 17.3 | 18 | 18.3 | 19 | 20 | 20.3 | 21 | 22 | 22.2 | 23 | 23.3 | 24 |
| ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ||||||
| Size 25〜42 | ||||||||||||||
| 25 | 26 | 27 | 27.62 | 28 | 30 | 30.6 | 32 | 33 | 33.3 | 34 | 35 | 36 | 38 | 40 |
| ▲ | ▲ | ▲ | ▲ | |||||||||||
| Size 45～50 | ||||||||||||||
| 42 | 45 | 48 | 50 | |||||||||||
Peeled round barsSpecification：JIS G4303、ASME A582、EN 1.4305
| Size 8〜26 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 26 |
| ● | ● | ● | ● | |||||||||||
| Size 27〜48 | ||||||||||||||
| 27 | 28 | 30 | 32 | 33 | 34 | 35 | 36 | 38 | 40 | 42 | 44 | 45 | 46 | 48 |
| ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| Size 50〜140 | ||||||||||||||
| 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 110 | 120 | 130 | 140 |
| ● | ● | ● | ● | ● | ▲ | ▲ | ▲ | ▲ | ▲ | ▲ | ||||
| Size 150〜250 | ||||||||||||||
| 150 | 160 | 170 | 180 | 190 | 200 | 230 | 250 | |||||||
Chemical composition
| Ni | Cr | Fe | C | Mn | Si | Co | P | S | Mo | Cu | N | Nb | Ta | Nb+Ta | W | V | other | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | 8.00 | 17.00 | ||||||||||||||||
| max | 10.00 | 19.00 | 0.15 | 2.00 | 1.00 | 0.20 | (0.60) |
※Above is standard values of JIS G4303. For further information, please contact us.
Mechanical properties
| Tensile Strength N/mm² | 0.2% Yield Strength N/mm² | Elongation ％ | Reduction of Area ％ | Hardness | |
|---|---|---|---|---|---|
| min | 520 | 205 | 40 | 50 | |
| max | HBW187 |
※Above is standard values of JIS G4303. For further information, please contact us.
International Specification Comparison chart
| Material | Round bars | Plates/Sheets | Pipes/Tubes | ||
|---|---|---|---|---|---|
| Seamless | Welded | ||||
| JIS | SUS303 | G4303/G4318 | G4304/G4305 | ||
| ASTM | S30300 | A582 | A895 | ||
| ASME | S30300 | SA582 | |||
| DIN/EN | 1.4305 | ||||
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