430 stainless steel / SS430 is a non-hardenable steel containing straight chromium, and belongs to the ferritic group of steels.This steel is known for its good corrosion resistance and formability, coupled with practical mechanical properties.It can be used in certain chemical applications due to its resistance to nitric acid.
430 stainless steel application:
430 stainless steel is used in construction decoration, fuel burner components, home appliances, home appliance parts. 430F is with the performance of free-cutting steel than 430, which is mainly used for the automatic lathe, bolts and nuts, etc.430 stainless steel is general ferrolites steel, which has good corrosion resistance. 430 has better heat-conducting property, smaller coefficient of thermal expansion than austenitic stainless steel. 430 resists thermal fatigue and weld parts of mechanical performance is good.
430 stainless steel material chemical composition
| Grade | C % | Cr % | Ni % | Mn % | P % | S % | Si % |
| 430 | ≤0.12 | 16.0-18.0 | ≤0.75 | ≤1.00 | ≤ 0.040 | ≤ 0.03 | ≤ 1.0 |
430 stainless steel properties:
430 stainless steel plate mechanical properties:
| Grade | Yield strength | Tensile strength | Elongation δ5 | Hardness | |
| σs MPa | σb MPa | % | HB | HRB | |
| 430 | ≥205 | ≥450 | ≥22 | ≤183 | ≤89 |
430 stainless steel physical properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion(mm/m/°C) | Thermal Conductivity (W/m.K) |
Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nW.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 430 | 7750 | 200 | 10.4 | 11.0 | 11.4 | 23.9 | 26.0 | 460 | 600 |
430 stainless steel corrosion resistance
430 has good resistance to a wide variety of corrosive enviornments, including nitric acid and some organic acids. It attains its maximum corrosion resistance when in the highly polished or buffed condition. In general its resistance to pitting and crevice corrosion resistance is close to that of grade 304. Stress corrosion cracking resistance of 430 is very high, as it is for all ferritic grades.
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