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At Gangsteel, a leading manufacturer and exporter of stainless steel products, we supply high-quality A240 304H stainless steel plate compliant with ASTM A240 and ASME SA 240 standards. A240 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 explains the equivalence between ASTM A240 304H and ASME SA 240 GR 304H, including specifications, properties, and applications for uses like plat stainless 304 and SA 240 GR 304 pipe. For inquiries, contact us at admin@gangsteel.com or explore our ASME SA240 Stainless sheet offerings.
A240 304Hand SA 240 GR 304H are technically identical, with ASME SA 240 being the direct adoption of ASTM A240 for use in the ASME Boiler and Pressure Vessel Code (BPVC). Both cover chromium and chromium-nickel stainless steel plates, sheets, and strips for pressure vessels and general corrosive service. The equivalence means:
Gangsteel's sa240 gr 304h plates meet both standards.
The chemical composition of A240 304H (equivalent to ASME SA 240 GR 304H) is:
Element |
Range (%) |
---|---|
Carbon (C) |
0.04 - 0.10 |
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 |
Property |
Value (Minimum) |
---|---|
Tensile Strength |
515 MPa (75 ksi) |
Yield Strength (0.2% Offset) |
205 MPa (30 ksi) |
Elongation (A5, 50 mm) |
40% |
Hardness (Brinell) |
≤ 201 HB |
Hardness (Rockwell B) |
≤ 92 HRB |
A240 304H 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.
Fair with ER308H fillers; low heat input (<2.0 kJ/mm) and annealing required. See sa240 gr 321.
A240 304H is used in:
For cost-effective options, see sa240 gr 201.
As of October 19, 2025, A240 304H 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.
ASME SA 240 GR 304H, identical for BPVC pressure vessels.
EN 1.4948 (X6CrNi18-10), matching high-carbon composition for creep resistance.
JIS SUS 304H, used in Asia for piping and sheets with similar properties.
GB 06Cr19Ni10H, prevalent in Chinese manufacturing for high-temperature applications.
They ensure global sourcing compatibility for high-temperature applications like boilers.
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