Mei Shen STEEL
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440C stainless steel can reach a hardness of HRC 58-62 after heat treatment, which is its most significant advantage. This high hardness enables it to withstand intense wear and deformation.
Its high carbon content results in a high concentration of hard carbides in its structure, which imparts its excellent wear resistance.
It performs well in dry or mildly corrosive environments, but is susceptible to rusting in seawater or highly acidic environments due to its high carbon content.
440C stainless steel is a martensitic stainless steel and, as such, exhibits strong magnetic properties.
| Specification | A276/484 / DIN 1028 |
|---|---|
| Material | 303, 304, 316, 321, 416, 420, 440, 440C |
| Outside Diameter | 4mm to 500mm (for Round Bars) |
| Width | 1mm to 500mm |
| Thickness | 1mm to 500mm |
| Technique | Hot Rolled Annealed & Pickled (HRAP), Cold drawn, Forged |
| Length | 3 to 6 Meters / 12 to 20 feet |
| Marking | Size, Grade, Specifications on Each Piece |
| Packing | Bundled with weaving bag or as per requirement |
| Region | Standard | 440A | 440B | 440C | 440F |
|---|---|---|---|---|---|
| American | ASTM | 440A | 440B | 440C | 440F |
| UNS | UNS | S44002 | S44003 | S44004 | S44020 |
| Japanese | JIS | SUS 440A | SUS 440B | SUS 440C | SUS 440F |
| German | DIN | 1.4109 | 1.4122 | 1.4125 | / |
| China | GB | 7Cr17 | 8Cr17 | 11Cr17 / 9Cr18Mo | Y11Cr17 |
| Grade | C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| 440A | 0.6-0.75 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 |
| 440B | 0.75-0.95 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 |
| 440C | 0.95-1.2 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 |
| Grades | Hardness Annealed (HB) | Heat Treated (HRC) |
|---|---|---|
| 440A | ≤ 255 | ≥ 54 |
| 440B | ≤ 255 | ≥ 56 |
| 440C | ≤ 269 | ≥ 58 |
| 440F | ≤ 269 | ≥ 58 |
