What does SA 240 stand for?

What Does SA 240 Stand For?

SA 240 stands for ASME SA-240/SA-240M, a specification published by the American Society of Mechanical Engineers (ASME) that defines the requirements for chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plates, sheets, and strips used primarily for pressure vessels, boilers, and general corrosive service. The "SA" prefix indicates it’s an ASME-adopted standard, aligned with ASTM A240/A240M, where the "M" denotes metric units for international use. SA 240 covers a range of stainless steel grades, including austenitic (e.g., SA 240 GR 304, SA 240 GR 316L), ferritic, martensitic, and duplex alloys, ensuring performance in demanding environments.

Key aspects of the SA 240 specification:

• Scope: Applies to flat-rolled products (plates, sheets, strips) for pressure vessels and general applications.
• Grades: Includes popular grades like SA 240 GR 304 (UNS S30400), known for SA 240 304 non magnetic properties, and others like SA 240 GR 316L and SA 240 Type 2205.
• Requirements: Specifies chemical composition, mechanical properties, heat treatment, and testing (e.g., tensile, hardness) to ensure quality and compliance.

Gangsteel’s sa 240 gr 304 plates are certified to meet SA 240 standards.

Key Properties of SA 240 GR 304 (Representative Grade)

SA 240 GR 304, a widely used austenitic stainless steel, serves as a benchmark for SA 240 properties.

Chemical Composition

• Chromium: Ensures corrosion resistance via a passive oxide layer.
• Nickel: Enhances ductility and SA 240 304 non magnetic properties.
• Carbon: Limited to ≤0.08% for weldability.

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

Mechanical Properties (Annealed, 8-75 mm thick)

Physical Properties

• Density: 8.00 g/cm³ (SA 240 GR 304 density).
• Melting Point: ~1400-1450°C.
• Thermal Conductivity: 16.2 W/m·K.
• Coefficient of Thermal Expansion: 17.2 × 10⁻⁶/K.

Applications of SA 240 Stainless Steel

SA 240 grades like 304 are used in:

• Food Processing: Tanks and plat stainless 304 for hygiene.
• Chemical Industry: Vessels and SA 240 GR 304 pipe for mild corrosives.
• Architecture: Structural panels like plate 2 mm SUS 304.
• Oil and Gas: Duplex grades like SA 240 Type 2205 for high strength.

For low-carbon welding, explore sa 240 gr 304l; for chloride resistance, see sa 240 gr 316l or sa 240 gr 317l.

Pricing and Availability

As of October 14, 2025, SA 240 GR 304 plate prices (2B finish, 3-6mm) range from $1.55-$3.50/kg globally. Gangsteel offers $1.60/kg FOB (MOQ 1 ton) for sa 240 gr 304 plates.

Why Choose Gangsteel?

Gangsteel provides certified SA 240 plates with competitive SS 304 plate price and sizes like plat SS 304 3mm. For quotes or to learn what is SA 304, visit our astm a 240 stainless plate page or email admin@gangsteel.com.