Forming
Similar in forming characteristics to 304 stainless steel without the same degree of ductility. It does not, however, work harden greatly
Fabrication
The lower work hardening rate makes bending and forming somewhat easier than for grade 304, but the lower ductility restricts very severe operations. Wherever possible severe bends should be made with the bend axis at right angles to the rolling direction. Severe cold heading of 430 wire is possible.
If very severe cold working is required it may be necessary to carry out a sub-critical intermediate anneal.
Mechanical properties at room temperature
| Typical | Minimum | |
| Tensile Strength, MPa | 530 | 450 |
| Proof Strength, 0.2 % , MPa | 360 | 205 |
| Elongation (Percent in Lo=5.65 So) MPa | 25 | 22 |
| Hardness | 160 | - |
All common welding methods used for stainless steel will be successful with 430. Filler metal should be AWS E/ER308 or 312
If welding is necessary pre-heat at 150-200°C. Embrittlement in the weld metal and heat affected zone can be relieved by a post-weld anneal at 790-815°C, but grain refinement will not occur. Use Grade 430, 308L, 309 or 310 filler rod, depending upon application. AS 1554.6 pre-qualifies welding of Grade 430 with Grade 309 filler rods and electrodes.
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