NAS 304(304T)； Material for Syringe Needles
Characteristics of NAS 304(304T)
NAS 304(304T) containing nickel as high as 9% provides softness, less work hardening, and high ductility.
Chemical Composition
(%)
| - | C | Si | Mn | P | S | Ni | Cr |
| Specification | ≦0.08 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.030 | 8.00～ 10.50 |
18.00～ 20.00 |
| Example | 0.046 | 0.67 | 1.70 | 0.026 | 0.0059 | 9.08 | 18.17 |
Mechanical Properties
| - | Thickness x Width (mm) |
Finish | 0.2% Proof stress （MPa） |
Tensile strength （MPa） |
Elongation （％） |
Hardness （HV） |
| Example | 0.2×12.7 | BA | 278 | 656 | 63 | 159 |
| 0.23×12.7 0.26x12.7 |
BA | 282 | 656 | 61 | 168 |
Application
Syringe needles
