430 Stainless Steel Tube
Description:
Type430 Stainless Steelis a low carbon ferritic stainless steel which, in mildly corrosive environments or atmospheric exposures, has corrosion resistance approaching that of some nickel-bearing stainless steels. This alloy is oxidation resistant at elevated temperatures. Type 430 is ductile, does not work harden readily, and can be formed using a variety of roll forming or mild stretch bending operations as well as the more common drawing and bending processes. Type 430 is ferromagnetic.
Product Forms:
Stainless Steel Sheet, Stainless Steel Coil, Stainless Steel CoilStrip, Stainless Steel Pipe, Stainless Steel Bar, Stainless Steel Wire.
Typical Applications:
Sinks, sink rims, appliance trim, counter tops, dish washers, range hoods, flatware, architectural uses, roofing, siding and restaurant equipment.
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)
Hardness Rockwell
430
30 min.
65 min.
22 min
HRB 89
Physical Properties:
Density (lb./ in^2) @ RT
0.278
Modulus of Elasticity in Tension (psi x 10^6)
29.0
Specific Heat (BTU/o F/lb.)
32 to 212 oF
0.11
Thermal Conductivity (BTU/hr/ft^2/ft)
212oF
13.8
932oF
15.0
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
60.0
Melting Point Range (oF)
2600 - 2750
Oxidation Resistance - Continuous Service(oF)
1500
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.
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.
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.