SUS403(A)/SUS403(H)
Characteristics
SUS403 is a general-purpose martensitic stainless steel with excellent corrosion resistance. It can be hardened by quenching and tempering and is suitable for applications requiring combustion resistance and high strength.
Because its carbon content is lower than SUS420J1, SUS403 possesses high corrosion resistance and achieves excellent toughness after heat treatment, but its corrosion resistance is lower than austenitic stainless steels.
Stock Form and Sizes
◆1000mm ◎2000mm ▲3000mm ■3500mm ●4000mm ★2500mm～3990mm
SUS403(A) Cold finished round barsSpecification：JIS G4318
| 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 | |||||||||||
SUS403(H) Peeled round barsSpecification：JIS G4303
| Size 5〜24 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 6 | 8 | 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 |
| ● | ● | ● | ● | ● | ||||||||||
| Size 25〜46 | ||||||||||||||
| 25 | 26 | 27 | 28 | 30 | 32 | 33 | 35 | 36 | 38 | 40 | 42 | 44 | 45 | 46 |
| ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| Size 48〜130 | ||||||||||||||
| 48 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 110 | 120 | 130 |
| ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ★ | ★ | ★ | |
| Size 140〜350 | ||||||||||||||
| 140 | 150 | 160 | 170 | 180 | 190 | 200 | 210 | 230 | 250 | 280 | 300 | 330 | 350 | |
| ★ | ★ | |||||||||||||
Chemical composition
| Ni | Cr | Fe | C | Mn | Si | Co | P | S | Mo | Cu | N | Nb | Ta | Nb+Ta | W | V | other | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | 11.50 | |||||||||||||||||
| max | (0.60） | 13.00 | 0.15 | 1.00 | 0.50 | 0.040 | 0.030 |
( )% max may be added.
※Above is standard values of JIS G4303. For further information, please contact us.
Mechanical properties
Soft Annealed
| Tensile Strength N/mm² | 0.2% Yield Strength N/mm² | Elongation ％ | Reduction of Area ％ | Hardness | |
|---|---|---|---|---|---|
| min | |||||
| max | HB200 |
Quench and Tempered
| Tensile Strength N/mm² | 0.2% Yield Strength N/mm² | Elongation ％ | Reduction of Area ％ | Hardness | |
|---|---|---|---|---|---|
| min | 590 | 390 | 25 | 55 | HB170 |
| max |
※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 | SUS403 | G4303/G4318 | – | ||
| ASTM | S40300 | A182/A276/A479 | A240 | ||
| ASME | S40300 | SA182/SA276/SA479 | SA240 | ||
| DIN/EN | |||||
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