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430 Stainless Steel Coil
Description
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.
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