As a ferritic stainless steel, 430 stainless steel is categorized by its high chromium content. Ranging from 12-180, the increased levels of chromium create a grade of stainless steel that possesses good ductility and formability characteristics. It also has the ability to resist strong acid corrosion, and also because of the high chromium levels provides good resistance to oxidation.
Chemical Formula
Fe, <0.12% C, 16-18% Cr, <0.75% Ni, <1.0% Mn, <1.0% Si, <0.040% P, <0.030% S
CHEMICAL COMPOSITION:
| Element | Type 430 |
| 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. |
MECHANICAL PROPERTIES:
| Type | Yield Strength 0.2% offset (KSI) | Tensile Strength (KSI) | % Elongation (2″ Gauge length) |
| 430 Ann | 30 min. | 65 min. | 22 min |
PHYSICAL PROPERTIES:
| Density (lb./ in^2) @ RT |
| 0.278 |
| Modulus of Elasticity in Tension (psi x 10^6) |
| 29 |
| Specific Heat (BTU/o F/lb.) | 32 to 212 oF | 0.11 |
| Thermal Conductivity (BTU/hr/ft^2/ft) | 212oF | 13.8 |
| 932oF | 15 |
| Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) | 32 to 212oF | 5.7 |
| 32 to 932oF | 6.2 |
| Electrical Resistivity (micro ohms – cm) | at 70oF | 60 |
| Melting Point Range (oF) |
| 2600 – 2750 |
| Oxidation Resistance – Continuous Service(oF) |
| 1500 |
As one of the more widely used ferritic stainless steels, 430 stainless has numerous consumer as well as commercial product applications. From automotive trim, dishwashers, range hoods and flatware to oil refinery and roofing equipment, 430 can be found in a number of popular uses.
Application
Construction/Indutry/Building/Chemical/Auto
· Linings for dish washers
· Refrigerator cabinet panels
· Automotive trim
· Lashing Wire
· Element Supports
· Stove trim rings
· Fasteners
· Chimney Liners
Typical applications for 430F grade include:
· Repetition machined components