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At Gangsteel, a leading manufacturer and exporter of stainless steel products, we supply premium ASTM 304H stainless steel plates compliant with ASTM A240 and ASME SA 240 standards, equivalent to EN 1.4948. ASTM 304H, also known as AISI 304H, UNS S30409, or EN 1.4948, is a high-carbon austenitic stainless steel optimized for high-temperature strength and creep resistance up to 1500°F (815°C). This guide details the EN 1.4948 equivalent to ASTM 304H, including properties, specifications, 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.
EN 1.4948(X6CrNi18-10) is the European standard equivalent to ASTM 304H, matching its high-carbon composition (0.04-0.10% C, 18-20% Cr, 8-10.5% Ni) and high-temperature creep resistance. The "1.4948" denotes a heat-resistant austenitic stainless steel, while "X6CrNi18-10" indicates ~18% Cr and 10% Ni. Both standards ensure identical mechanical properties (515 MPa tensile strength, 205 MPa yield strength) and are interchangeable for pressure vessels and high-temperature service. EN 1.4948 complies with EN 10088 for chemical composition and EN 10028 for pressure equipment. For low-carbon variants, see sa240 gr 304l.
The chemical composition of ASTM 304H (EN 1.4948) 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 |
ASTM 304H (EN 1.4948) 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.
ASTM 304H (EN 1.4948) 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.
JIS SUS 304H, matching the high-carbon composition for high-temperature use.
GB 06Cr19Ni10H, prevalent in Chinese manufacturing for high-temperature applications.
Identical: 0.04-0.10% C, 18-20% Cr, 8-10.5% Ni, ensuring creep resistance and corrosion performance.
They enable global sourcing for high-temperature applications like boilers, ensuring compatibility.
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