SUS440C
Characteristics
SUS440C is a high-carbon martensitic stainless steel with high strength, proper corrosion resistance, and good hardness and wear resistance.
Stock Form and Sizes
◆1000mm ◎2000mm ▲3000mm ■3500mm ●4000mm ★2500mm～3990mm
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 |
| ◎ 3.2 | ◎ 4.2 | ◎ 5.2 | ◎● 6.2 | ◎● 7.2 | ● 8.2 | |||||||||
| 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 |
| ● 9.2 | ● 10.2 | ● 12.2 | ● 13.2 | ● 14.2 | ||||||||||
| 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 | |||||||||||
Chemical composition
| Ni | Cr | Fe | C | Mn | Si | Co | P | S | Mo | Cu | N | Nb | Ta | Nb+Ta | W | V | other | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | 16.00 | 0.95 | ||||||||||||||||
| max | (0.60) | 18.00 | 1.20 | 1.00 | 1.00 | 0.040 | 0.030 | (0.75) |
( )% max may be added.
Mechanical properties
Soft Annealed
| Tensile Strength N/mm² | 0.2% Yield Strength N/mm² | Elongation ％ | Reduction of Area ％ | Hardness | |
|---|---|---|---|---|---|
| min | |||||
| max | HB269 |
Quench and Tempered
| Tensile Strength N/mm² | 0.2% Yield Strength N/mm² | Elongation ％ | Reduction of Area ％ | Hardness | |
|---|---|---|---|---|---|
| min | HRC58 | ||||
| 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 | SUS440C | G4303/G4318 | G4304 | ||
| ASTM | S44004 | A182/A276/A479 | A240 | ||
| ASME | S44004 | SA182/SA276/SA479 | SA240 | ||
| DIN/EN | 1.4125 | ||||
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