430 Stainless Steel Composition, 430 Stainless Steel sopt

Type 430 (UNS S43000) is a ferritic stainless steel that has resistance to oxidation up to 1500ºF along with good ductility and corrosion resistance. This alloy is also often polished for cosmetic applications.

430 Stainless Steel Composition
Carbon 0.12 max.
Manganese 1.00 max.
Sulfur 0.030 max.
Phosphorus 0.040 max.
Silicon 1.00 max.
Chromium 16.0 – 18.0
Nickel 0.75 max.

430 Stainless Steel Processing:
Type 430 should be annealed at 1450-1550ºF and furnace cooled at a rate of 50°F per hour to 1100°F and air cooled. If the annealing temperature does not exceed 1450°F (790°C), an air cool may be substituted for the furnace cool when annealing thin sections.

430 Stainless Steel Forming:
Type 430 is readily drawn and formed. Its drawing characteristics are similar to those of low-carbon steel, although it is stronger in the annealed condition and will require stronger tooling and increased power.

430 Stainless Steel Welding:
Type 430 is generally considered to be weldable by the common fusion and resistance techniques. Special consideration is required to avoid brittle weld fractures during fabrication. When a weld filler is needed, AWS E/ER 308L and 430 are most often specified. Corrosion: This alloy is resistant to attack in a wide variety of corrosive media including nitric acid, and many organic acids.

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