Type 430 is:
- Ferritic: an alloy containing a minimum of 16% chromium. This material offers good corrosion resistance in mild environments, good oxidization resistance at elevated temperatures, is ductile and does not work harden easily. It polishes well which makes it a good choice where cosmetics are important.
- Used in a variety of applications: Some of the typical uses of type 430 include appliances, architectural trim, consumer and industrial products, counter tops, flanges and valves, food service equipment and sinks.
- Able to be processed in many ways: Metal processors and fabricators stamp, form, draw, bend and cut alloy 430 to produce various parts. It can also be welded although weldability is limited. It is ductile and does not work harden by cold working as fast as the austenitic grades.
The Chemical Composition and Mechanical Properties of Type 430 are as follows:
| Type 430 | |
|---|---|
| ASTM A240/A240M (UNS Designation) | S43000 |
| Chemical Composition | |
| Chromium | 16-18% |
| Nickel (max.) | 0.750% |
| Carbon (max.) | 0.120% |
| Manganese (max.) | 1.000% |
| Silicon (max.) | 1.000% |
| Sulfur (max.) | 0.030% |
| Phosphorus (max.) | 0.040% |
| Mechanical Properties (annealed) | |
| Tensile (min. psi) | 65,000 |
| Yield (min. psi) | 30,000 |
| Elongation (in 2″, min %) | 20 |
| Hardness (max Rb) | 89 |
T430, type 430 and grade 430 are interchangeable terms for 430 stainless steel.
