a 240 304H Stainless Steel Plate Properties and Availability

A 240 304H Stainless Steel Plate: Properties and Availability

At Gangsteel, a leading manufacturer and exporter of stainless steel products, we supply premium A 240 304H stainless steel plate compliant with ASTM A240 and ASME SA 240 standards. A 240 304H stainless steel plate, also known as SA 240 GR 304H or AISI 304H, is a high-carbon austenitic stainless steel optimized for high-temperature service up to 1500°F (815°C). This versatile material is ideal for applications like boilers, heat exchangers, and pressure vessels. This guide details the properties and availability of A 240 304H stainless steel plate. Contact us at admin@gangsteel.com or explore our ASME SA240 Stainless sheet offerings.

Overview of A 240 304H Stainless Steel Plate

A 240 304H stainless steel plate is specified for chromium and chromium-nickel stainless steel products used in pressure vessels and high-temperature service. With 0.04-0.10% carbon, it enhances creep and rupture strength compared to standard 304 or 304L plates. Non-magnetic with a density of 8.00 g/cm³, it’s perfect for demanding environments. For plate-specific standards, A240 focuses on flat-rolled products; use SA 240 for ASME compliance. See sa240 gr 304h.

Chemical Composition

The composition of A 240 304H stainless steel plate ensures high-temperature performance:

Higher carbon improves creep resistance. See sa240 gr 304l for low-carbon variants.

Mechanical Properties

Enhanced strength at high temperatures. See sa240 gr 304.

Physical Properties

• Density: 8.00 g/cm³.
• Melting Point: 1400-1450°C.
• Thermal Conductivity: 16.2 W/m·K.
• Coefficient of Thermal Expansion: 17.2 × 10⁻⁶/K.
• Max Service Temperature: 1500°F (815°C) continuous.

Corrosion Resistance

A240 304H stainless steel plate resists mild acids and atmospheric conditions, outperforming SS204 vs SS 304. Higher carbon risks sensitization in welds; anneal for protection. See sa240 gr 316l for chlorides.

Weldability

Fair with ER308H fillers; low heat input (<2.0 kJ/mm) and annealing required. See sa240 gr 321.

Applications of A240 304H Stainless Steel Plate

A240 304H stainless steel plate is used in:

• Boilers and pressure vessels.
• Heat exchangers.
• Power generation piping.
• High-temperature chemical processing.

For cost-effective options, see sa240 gr 201.

Pricing and Availability

As of October 19, 2025, A240 304H stainless steel plate prices (2B finish, 3-6mm) range from $1.60-$3.50/kg. Gangsteel offers $1.60/kg FOB (MOQ 1 ton) for sa240 gr 304h. Contact admin@gangsteel.com or visit astm a 240 stainless plate.

FAQ on A240 304H Stainless Steel Plate

What is the maximum service temperature for A240 304H stainless steel plate?

Continuous up to 1500°F (815°C), with enhanced creep resistance for high-temperature pressure vessels.

What are the mechanical properties of A240 304H stainless steel plate?

Tensile strength 515 MPa (75 ksi), yield strength 205 MPa (30 ksi), elongation 40%.

How does A240 304H stainless steel plate compare to 304L?

304H has higher carbon for heat strength; 304L is better for weldability. See sa240 gr 304l.

What applications use A240 304H stainless steel plate?

Boilers, heat exchangers, power generation piping, and high-temperature structures.

Why choose A240 304H stainless steel plate?

Improved creep resistance and corrosion in high-temperature environments at competitive pricing.