sa240 stainless steel properties

Overview of ASME SA240 Stainless Steel

ASME SA240 specifies chromium and chromium-nickel stainless steel plates, sheets, and strips for pressure vessels and general applications. SA 240 GR 304, a key grade, is an austenitic stainless steel with a SA 240 GR 304 density of 8.00 g/cm³, ideal for applications like plat stainless 304, SA 240 GR 304 pipe, and architectural panels. Its SS 304 non magnetic properties in the annealed state make it suitable for food processing, chemical, and medical industries. Gangsteel’s sa 240 gr 304 plates ensure compliance and quality.

Chemical Composition of SA 240 GR 304

The chemical composition of SA 240 GR 304, as per ASTM A240, ensures its corrosion resistance and formability:

• Chromium: Forms a passive oxide layer for corrosion resistance.
• Nickel: Enhances ductility and toughness, contributing to SS 304 non magnetic properties.
• Carbon: Limited to ≤0.08% for weldability, though SA 240 GR 304L (≤0.03%) is better for critical welds. See sa 240 gr 304l.

For detailed specs, refer to our SS 304 data sheet.

Mechanical Properties of SA 240 GR 304

The mechanical properties of SA 240 GR 304 for annealed plates (8-75 mm thick) support its use in structural and forming applications:

Cold-working can increase tensile strength (up to 900 MPa) but reduces ductility. For high-temperature applications, explore sa 240 gr 304h.

Physical Properties

• Density: 8.00 g/cm³, ideal for lightweight designs (e.g., a 1m x 1m x 3mm plate weighs ~24 kg).
• Melting Point: ~1400-1450°C, suitable for processing.
• 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 applications.

These properties make SA 240 GR 304 versatile for plat SS 304 3mm and plate 2 mm SUS 304.

Corrosion Resistance

SA 240 GR 304 offers excellent resistance to:

• Atmospheric corrosion, freshwater, and mild acids (e.g., food-grade applications).
• General environments, outperforming SS204 vs SS 304.

It’s less resistant to chloride-induced pitting compared to SA 240 GR 316L. For chloride-heavy environments, explore sa 240 gr 316l.

Weldability and Fabrication

• Weldability: Good with ER308 or ER308L fillers, though SA 240 GR 304L is preferred for critical welds to avoid sensitization.
• Formability: High elongation (≥40%) supports deep drawing for plat stainless 304.
• Machinability: Low hardness (≤201 HB) ensures ease of machining, unlike SA 240 GR 304H material.

For harsher conditions, consider sa 240 gr 317l or sa 240 gr 321.

Applications of SA 240 GR 304

SA 240 GR 304 is used in:

• Food Processing: Tanks and equipment (hygienic, non-tarnishing).
• Chemical Industry: Vessels and SA 240 GR 304 pipe for mild corrosives.
• Architecture: Structural and decorative panels.
• Automotive: Components requiring corrosion resistance.

Pricing and Availability

As of October 14, 2025, SA 240 GR 304 plates (2B finish, 3-6mm) are priced at $1.55-$3.50/kg globally, with Gangsteel offering $1.60/kg FOB (MOQ 1 ton). Our inventory includes custom sizes and competitive SS 304 plate price options. Visit our astm a 240 stainless plate page.

Why Choose Gangsteel?

Gangsteel provides certified SA 240 GR 304 plates with consistent properties and competitive SS 304 sheet price. Our inventory includes SA 240 TP 304/304L dual-certified plates and sizes like plat SS 304 3mm. For quotes or to learn what is SA 304, email admin@gangsteel.com.