9 gauge 304 stainless steel sheet

What is a 9 Gauge SA 240 GR 304 Stainless Steel Sheet?

A 9 gauge stainless steel sheet corresponds to a thickness of approximately 3.175 mm (0.125 inches), based on the American Wire Gauge (AWG) system for sheet metal. SA 240 GR 304, with a SA 240 GR 304 density of 8.00 g/cm³, is an austenitic stainless steel ideal for applications requiring corrosion resistance and formability, such as plat stainless 304, food processing equipment, and architectural panels. Its SS 304 non magnetic properties in the annealed state make it suitable for hygienic and electronic applications. Gangsteel’s sa 240 gr 304 sheets meet ASME SA 240 standards.

Mechanical Properties of 9 Gauge SA 240 GR 304

The mechanical properties of SA 240 GR 304 for a 9 gauge sheet (annealed condition) ensure its strength and formability:

*Source: ASME SA 240 and ASTM A240 standards, as of October 14, 2025. Cold-rolled 9 gauge sheets may exhibit higher strength (e.g., tensile up to 900 MPa) but reduced ductility. For details, see our SS 304 data sheet.

These properties make 9 gauge SA 240 GR 304 sheets, akin to plat SS 304 3mm, ideal for forming and structural applications.

Chemical Composition

The chemical composition of SA 240 GR 304 ensures its corrosion resistance and weldability:

For welding-critical applications, consider our sa 240 gr 304l with lower carbon (≤0.03%).

Physical Properties

• Density: 8.00 g/cm³, ensuring lightweight designs (e.g., a 1m x 1m x 3.175mm sheet weighs ~25.4 kg).
• Thermal Conductivity: 16.2 W/m·K, moderate for heat transfer.
• Coefficient of Thermal Expansion: 17.2 × 10⁻⁶/K, stable across temperatures.
• Melting Point: ~1450°C, suitable for processing.
• Electrical Resistivity: 0.72 × 10⁻⁶ Ω·m, ideal for non-conductive uses.

Its SS 304 non magnetic nature suits food-grade and electronic applications.

Corrosion Resistance and Weldability

SA 240 GR 304 offers excellent corrosion resistance in:

• Atmospheric and freshwater environments.
• Mild acids (e.g., food acids), making it food-grade.

However, it’s less resistant to chloride pitting compared to SA 240 GR 316L. Weldability is good with ER308 or ER308L fillers, but SA 240 GR 304L is preferred for critical welds to avoid sensitization. For chloride-heavy environments, explore sa 240 gr 316l.

Applications of 9 Gauge SA 240 GR 304 Sheet

At ~3.175 mm thick, 9 gauge SA 240 GR 304 sheets are used in:

• Food Processing: Tanks, conveyors, and equipment (hygienic, non-tarnishing).
• Chemical Industry: Vessels and SA 240 GR 304 pipe for mild corrosives.
• Architecture: Decorative panels and structural components.
• Automotive: Exhaust components and trim.

Compared to SS204 vs SS 304, 304 offers superior corrosion resistance. For high-temperature applications, consider sa 240 gr 304h.

Availability and Pricing at Gangsteel

Gangsteel offers 9 gauge SA 240 GR 304 sheets in standard sizes (e.g., 4’x8’, 5’x10’) and custom cuts, with finishes like 2B, No.1, and polished. As of October 14, 2025, indicative SS 304 plate price for 9 gauge sheets is $1.60-$1.80/kg FOB (MOQ 1 ton), competitive with market rates ($1.55-$3.50/kg globally, depending on region). Our sa 240 gr 304 sheets are dual-certified with SA 240 TP 304/304L for flexibility.

For harsher environments, explore our sa 240 gr 317l or sa 240 gr 321.

Why Choose Gangsteel?

Gangsteel provides certified 9 gauge SA 240 GR 304 sheets with consistent properties and competitive SS 304 sheet price. Our inventory supports applications from plat stainless 304 to heavy plates. For quotes or to learn what is SA 304, visit our astm a 240 stainless plate page or email admin@gangsteel.com.