a240 gr 304H Plate Suppliers Stock and Custom Sizes

A240 GR 304H Plate Suppliers: Stock and Custom Sizes

At Gangsteel, a leading manufacturer and exporter of stainless steel products from China, we specialize in supplying premium A240 GR 304H stainless steel plate compliant with ASTM A240 and ASME SA 240 standards. A240 GR 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 guide highlights reliable suppliers, focusing on Gangsteel as your trusted source, along with stock availability, custom sizes, and pricing for applications like boilers, heat exchangers, and pressure vessels. Contact us at admin@gangsteel.com or explore our ASME SA240 Stainless sheet offerings.

Overview of A240 GR 304H Stainless Steel Plate

A240 GR 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 plate. Non-magnetic with a density of 8.00 g/cm³, it’s ideal for demanding environments. For plate-specific standards, A240 covers flat-rolled products; use SA 240 for ASME compliance. See sa240 gr 304h.

Chemical Composition

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

Mechanical Properties

High strength at high temperatures (25.5 ksi allowable at 1000°F). 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 GR 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.

Stock and Custom Sizes at Gangsteel

Gangsteel is your reliable supplier of A240 GR 304H stainless steel plate, offering:

• Stock Availability: Over 600 tons in thicknesses from 0.5mm to 100mm, widths up to 2500mm, and lengths up to 12000mm. Standard sizes: 4’x8’, 5’x10’, 6’x24’.
• Custom Sizes: Cut-to-length, waterjet cutting, and polishing; custom thicknesses 0.3mm-200mm, widths 500-3000mm, lengths up to 18m.
• Finishes: 2B, No.1, No.4, No.8, brushed, mirror, embossed.
• Certifications: Full MTCs, third-party inspections (SGS, BV), dual-certified with SA 240 TP 304/304L.

Our A240 GR 304H plates are sourced from premium mills like Jindal or POSCO, ensuring consistency for high-temperature reliability. Contact admin@gangsteel.com for quotes.

Pricing and Availability

As of October 19, 2025, A240 GR 304H stainless steel plate prices (2B finish, 3-6mm) range from $1.60-$3.50/kg globally. Gangsteel offers $1.60/kg FOB (MOQ 1 ton) for standard sizes, including custom cuts like plate 2 mm SUS 304. Our prices are 5-10% below market averages. Contact admin@gangsteel.com or visit sa240 gr 304h for details.

FAQ on A240 GR 304H Stainless Steel Plate Suppliers

What stock sizes are available for A240 GR 304H stainless steel plate?

Gangsteel stocks 0.5mm-100mm thick plates, widths up to 2500mm, lengths up to 12000mm; standard 4’x8’, 5’x10’.

How can I get custom sizes for A240 GR 304H stainless steel plate?

Gangsteel provides waterjet cutting, polishing, and custom dimensions up to 200mm thick and 18m long; contact admin@gangsteel.com.

What is the lead time for A240 GR 304H stainless steel plate stock?

Standard stock ships within 1-2 weeks; custom orders 3-4 weeks with 600+ ton inventory.

Are A240 GR 304H stainless steel plates certified?

Yes, all Gangsteel plates include MTCs, third-party inspections (SGS, BV), and compliance with ASME SA 240/ASTM A240.

What is the price of A240 GR 304H stainless steel plate from Gangsteel?

Starting at $1.60/kg FOB (MOQ 1 ton); 5-10% below market, with discounts for bulk orders.