a240 304 stainless steel properties

What is ASTM A240 304 Stainless Steel?

ASTM A240 304 is an austenitic stainless steel specified under ASTM A240 for chromium and chromium-nickel plates, sheets, and strips used in pressure vessels and general applications. Known for its SS 304 non magnetic properties in the annealed state and a SA 240 GR 304 density of 8.00 g/cm³, it’s ideal for diverse uses, from plat SS 304 3mm to thicker plates. Gangsteel’s sa 240 gr 304 plates ensure top quality and compliance.

Chemical Composition of ASTM A240 304

The chemical composition of ASTM A240 304 ensures its corrosion resistance and weldability. Below is the typical composition (by weight percentage) as per ASTM A240:

• Carbon (C): 0.00 - 0.08%
• Manganese (Mn): 0.00 - 2.00%
• Silicon (Si): 0.00 - 0.75%
• Phosphorus (P): 0.00 - 0.045%
• Sulfur (S): 0.00 - 0.030%
• Chromium (Cr): 18.00 - 20.00%
• Nickel (Ni): 8.00 - 10.50%
• Nitrogen (N): 0.00 - 0.10%
• Iron (Fe): Balance

This composition distinguishes ASTM A240 304 from SA 240 GR 304L (lower carbon) and SA 240 GR 304H material (higher carbon). For details, see our SS 304 data sheet.

Mechanical Properties of ASTM A240 304

The mechanical properties of ASTM A240 304 make it suitable for forming and structural applications. Below are typical values for annealed plates (8-75 mm thick):

These properties support applications like SA 240 GR 304 pipe and plate 2 mm SUS 304. Compared to SS204 vs SS 304, 304 offers superior toughness. Explore our sa 240 gr 304l for welding-focused needs.

Physical Properties

ASTM A240 304’s physical properties enhance its versatility:

• Density: 8.00 g/cm³ (SA 240 GR 304 density), ideal for lightweight designs.
• Melting Point: ~1450°C, suitable for high-temperature processes.
• Thermal Conductivity: 16.2 W/m·K, moderate for heat transfer.
• Coefficient of Thermal Expansion: 17.2 × 10⁻⁶/K, stable across temperatures.
• Electrical Resistivity: 0.72 × 10⁻⁶ Ω·m, good for non-conductive uses.

Its SS 304 non magnetic nature in annealed form suits electronic and medical applications. Check our sa 240 gr 316l for enhanced corrosion resistance.

Corrosion Resistance and Weldability

ASTM A240 304 offers excellent resistance to corrosion in atmospheric, freshwater, and mild acid environments, making it ideal for food and beverage equipment. It’s less resistant to chlorides compared to SA 240 GR 316, but outperforms SA 240 GR 304H material in welded structures due to moderate carbon content. Weldability is good with 308 filler metal, though SA 240 GR 304L is preferred for critical welds. Gangsteel’s sa 240 gr 304h suits high-temperature needs.

Applications of ASTM A240 304

With its balanced properties, ASTM A240 304 is used in:

• Food Processing: Tanks and equipment (plat stainless 304).
• Chemical Industry: Vessels and piping (SA 240 GR 304 pipe).
• Construction: Architectural panels and structural components.
• Medical: Non-magnetic instruments, leveraging SS 304 non magnetic properties.

Its SS 304 plate price is competitive, making it a cost-effective choice. Contact admin@gangsteel.com for pricing on astm a 240 stainless plate.

Comparing ASTM A240 304 with Other Grades

• Vs. SA 240 GR 304L: Higher carbon (≤0.08%) gives 304 slightly better strength but less weldability.
• Vs. SA 240 GR 316: 304 is more affordable but less resistant to pitting.
• Vs. 200 Series: ASTM A240 304 outperforms 304 vs 200 grades in corrosion resistance and formability.

Explore our sa 240 gr 317l for aggressive environments or sa 240 gr 321 for high-temperature stability.

Why Choose Gangsteel for ASTM A240 304?

Gangsteel offers certified ASTM A240 304 plates with competitive SS 304 sheet price and reliable supply. Our inventory includes SA 240 TP 304/304L and custom sizes like plat SS 304 3mm. For detailed specs or to learn what is SA 304, visit our sa 240 gr 304 page or email admin@gangsteel.com.