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SS 430 • UNS S43000

SS 430 is a corrosion and heat resistant ferritic Chromium Steel. It can be polished to appear similar to Chromium plate. The material is magnetic in both annealed and cold rolled tempers.

The alloy can be readily blanked and formed. The material can be resistance welded, brazed, and soldered. SS 430 is resistant to atmospheric corrosion and fresh water, but it not resistant to most salts and sea water. It is resistant to scaling by oxidation up to about 1400°F.

Available Sizes:

SS 430 is available from Hamilton Precision Metals as strip product in thicknesses from 0.001” to 0.050” (0.0254 mm to 1.27 mm) in widths up to 12.0” (304.8 mm). The material conforms to ASTM A240, FED QQS 766, and UNS S43000.

Nominal Composition
SS 430 NOMINAL COMPOSITION
Chromium 16.3%
Manganese 0.45%
Silicon 0.40%
Nickel 0.2%
Carbon 0.04%
Iron Balance


Mechanical Properties
SS 430 MECHANICAL PROPERTIES
ANNEALED COLD ROLLED
Ultimate Tensile Strength 75,000 PSI 145,000 PSI
Yield Strength (0.2% Offset) 45,000 PSI 135,000 PSI
Elongation in 2” * 30% 1%
Modulus of Elasticity (Tension) 29 x 106 PSI
Poisson’s Ratio 0.27

*The measured elongation will be less as thickness decreases to 0.002” and less.
These values may be adjusted by control of process variables – consult HPM for desired values


Physical Properties
SS 430 PHYSICAL PROPERTIES
Density 0.28 lbs/cu.in.
Melting Point (Approx.) 1425°C
Electrical Resistivity @ R.T. 60 Microhm·cm
Temperature Coefficient of Resistivity (TCR) (0° to 100°C) 10.5 x 10-6 /°C
Thermal Conductivity @ 100°C 26.1 W/m·K
Magnetic Permeability 800
Magnetic Attraction Yes

Typical values to guide alloy selection but are not a guarantee of minimum or maximum