| Specifications of 440A Stainless Steel Wire: |
| Grade | 440A |
| Standard | ASTM A580 |
| Diameter | 0.01 mm to 6. 0mm |
| Surface | Bright, Cloudy, Pickled |
| Length | Coil Form Or Straight Cut Lengths |
| Precision TOLERANCE | +/- 0.002mm |
| EQUIVALENT GRADES OF 1.4109 Stainless Steel Wire: |
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| 440A | 1.4109 | S44002 | SUS440A | 1.4109 |
| CHEMICAL COMPOSITION OF 440A Stainless Spring Steel Wire: |
| Grade | C | Mn | Si | S | Fe | P | Cr | Mo |
| 440A | 0.6-0.75 max | 1.00max | 1.0 max | 0.030max | Bal | 0.04max | 16.00-18.00 | 0.75max |
| 440A Stainless Spring Steel Wire Mechanical Properties |
| Grade | Hardness(HRC) | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min |
| 440A | 55 to 57 | 1275 to 1482 | 965 to 1241 | 10% to 15% |
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