Stainless 321 Steel Coils

321 Stainless Steel Coils Definition

Alloy 321 (UNS S32100) is titanium stabilized austenitic stainless steel coil with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 - 1500°F (427 - 816°C). The alloy resists oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than alloys 304 and 304L. It also possesses good low temperature toughness.

Density (lb./ in^2) @ RT		0.29
Modulus of Elasticity in Tension (psi x 10^6)		28.0
Specific Heat (BTU/o F/lb.)	32 to 212 oF	0.12
Thermal Conductivity (BTU/hr/ft^2/ft)	212oF	9.3
	932oF	12.8
Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F)	32 to 212oF	9.2
	32 to 600oF	9.5
	32 to 1,000oF	10.3
	32 to 1,200oF	10.7
Electrical Resistivity (micro ohms – cm)	at 70oF	28.4
Melting Point Range (oF)		2500 – 2550

Magnetic Permeability: H = 200 Oersteds: Annealed < 1.02 max
Melting Range: 2500 - 2550 °F (1371 - 1400 °C)

FORMS

Coil - Strip, Foil, Ribbon Wire - Profile, Round, Flat, Square

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