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SA240 stainless steel overview plates refer to chromium, chromium-nickel, and chromium-manganese-nickel stainless steel materials specified under ASME SA240 for plates, sheets, and strips in pressure vessels and general applications. These materials offer corrosion resistance, strength, and versatility for industries like chemical processing, food production, and construction. Gangsteel, a leading manufacturer and exporter in China, supplies SA240 stainless steel plates in various grades. As a specialist in ASME SA240 stainless steel plates, Gangsteel provides customized solutions for global clients. This article offers an overview of SA240 stainless steel plates, their composition, properties, and uses.
SA240 stainless steel is a specification covering austenitic, ferritic, and martensitic grades with corrosion resistance and mechanical performance for high-pressure and general use. Common grades include 201, 201L, 201LN, 202, 255, 301, 301L, 301LN, 302, 304, 304H, 304L, 304LN, 304N, 305, 309CB, 309H, 309HCB, 309S, 310CB, 310H, 310HCB, 310MOLN, 310S, 316, 316CB, 316H, 316L, 316LN, 316N, 316TI, 317, 317L, 317LM, 317LMN, 321, 321H, 329, 334, 347, 347H, 348, 348H, 405, 409, 410, 410S, 415, 429, 430, 434, 436, 439, 444, 800, 800H, 904L, 2205, 2304, 2507. Equivalent materials vary by grade, such as UNS S30400 for 304, EN 1.4301 for 304, and JIS SUS304 for 304. Gangsteel’s SA240 products are produced under ASTM A240 stainless plate specifications, ideal for fabrication and structural purposes.
The chemical composition in SA240 varies by grade but ensures resistance and durability. For Grade 304, the table below lists elements as per ASME SA240:
|
Element |
SA240 Grade 304 Composition |
Purpose |
|---|---|---|
|
Carbon (C) |
≤ 0.08% |
Provides strength while allowing weldability. |
|
Chromium (Cr) |
18.0–20.0% |
Offers main corrosion and oxidation resistance. |
|
Nickel (Ni) |
8.0–10.5% |
Improves ductility and acid resistance. |
|
Manganese (Mn) |
≤ 2.0% |
Enhances hot working and strength. |
|
Silicon (Si) |
≤ 0.75% |
Supports deoxidation and scaling resistance. |
|
Phosphorus (P) |
≤ 0.045% |
Restricts impurities to preserve quality. |
|
Sulfur (S) |
≤ 0.03% |
Reduces brittleness for better machining. |
|
Nitrogen (N) |
≤ 0.10% |
Increases pitting resistance and strength. |
Gangsteel follows SA240 compositions, compatible with JIS G 4304 stainless steel plate standards.
SA240 mechanical properties vary by grade. For Grade 304, the table below summarizes as per ASME SA240:
|
Property |
SA240 Grade 304 Value |
Description |
|---|---|---|
|
Tensile Strength (min) |
515 MPa (75 ksi) |
Highest stress before failure. |
|
Yield Strength (min) |
205 MPa (30 ksi) |
Stress at deformation start (0.2% offset). |
|
Elongation (min) |
40% (in 2 inches) |
Ductility measure for forming. |
|
Hardness (max) |
201 HBW (Brinell) or 92 HRB (Rockwell B) |
Resistance to deformation. |
|
Density |
7.93 g/cm³ (7930 kg/m³) |
Used for weight assessments. |
These make SA240 plates preferable over lower grades, with Gangsteel offering SA240 Gr 304L for weld needs.
SA240 equivalents vary by grade. For Grade 304, the table below lists common ones:
|
Standard |
Equivalent Grade |
Description |
|---|---|---|
|
UNS (USA) |
S30400 |
Universal identifier for sourcing. |
|
EN/DIN (Europe) |
1.4301 |
European grade with similar attributes. |
|
JIS (Japan) |
SUS304 |
Japanese equivalent for regional applications. |
|
ISO |
X5CrNi18-10 |
International standard for global projects. |
|
GB (China) |
0Cr18Ni9 |
Chinese grade for domestic manufacturing. |
|
BS (UK) |
304S31 |
British standard equivalent for UK applications. |
|
AFNOR (France) |
Z7CN18-09 |
French grade with matching characteristics. |
|
SS (Sweden) |
2332 |
Swedish equivalent for Scandinavian projects. |
Gangsteel’s SA240 plates integrate with these, aligning with ASTM A 959 stainless steel plates.
SA240 plates are used in multiple sectors. The table below highlights applications:
|
Industry |
Application |
Related Products |
|---|---|---|
|
Chemical Processing |
Tanks, reactors, and components for corrosives. |
|
|
Food Production |
Equipment surfaces and storage. |
|
|
Construction |
Structural panels and supports. |
|
|
Automotive |
Exhaust systems and trims. |
Gangsteel’s ASME SA 213/SA 213M stainless pipes complement SA240 plates for systems.
SA240 304 vs 316: SA240 304 offers general corrosion resistance and is cost-effective for mild environments, while SA240 316 includes molybdenum for better chloride resistance, suited for marine or harsh chemical applications.
SA240 304 vs 304L: SA240 304 provides higher strength, but SA240 304L, with lower carbon, offers superior weldability and resistance to intergranular corrosion.
SA240 304 vs 201: SA240 304 has better corrosion resistance due to higher nickel, making it ideal for outdoor use, whereas SA240 201 is more affordable but less durable in corrosive conditions.
SA240 304 vs 430: SA240 304 is austenitic and non-magnetic with excellent formability, while SA240 430 is ferritic, magnetic, and offers good resistance in less demanding settings but lower overall corrosion performance.
Gangsteel’s nickel alloy steel plates provide alternatives for extreme uses.
Gangsteel, a stainless solution provider in China, offers SA240 stainless steel plates with:
SA240 stainless steel plates provide corrosion resistance and strength for chemical, food, and construction applications. With defined composition and properties, they meet diverse needs, supported by equivalents like EN 1.4301. Gangsteel’s solutions in China, including SA240 Gr 316L and SA240 Gr 904L, ensure quality. Contact Gangsteel for UNS stainless steel plates to fulfill your requirements.
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