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SA240 304 stainless steel is an austenitic grade widely used for its corrosion resistance, strength, and versatility in industries such as chemical processing, food production, and construction. This material meets ASME SA240 standards, ensuring suitability for pressure vessels and general applications. Gangsteel, a major manufacturer and exporter in China, offers SA240 304 stainless steel in various forms, including plates, sheets, and strips. As a specialist in ASME SA240 stainless steel plates, Gangsteel provides customized solutions for global clients. This article details the composition, properties, and uses of SA240 304 stainless steel.
SA240 304 is a chromium-nickel austenitic stainless steel with 18–20% chromium and 8–10.5% nickel, offering balanced corrosion resistance and mechanical performance. It is non-magnetic in annealed form and can be cold-worked for increased strength. Equivalent materials include UNS S30400, EN 1.4301, and JIS SUS304, allowing for international compatibility. Gangsteel’s SA240 Gr 304 products are produced under ASTM A240 stainless plate specifications, suitable for fabrication and structural use.
The chemical composition of SA240 304 is specified by ASME SA240 to ensure corrosion resistance and durability. The table below lists the elements:
|
Element |
SA240 304 Composition |
Purpose |
|---|---|---|
|
Carbon (C) |
≤ 0.08% |
Supports strength while permitting weldability. |
|
Chromium (Cr) |
18.0–20.0% |
Provides primary corrosion and oxidation resistance. |
|
Nickel (Ni) |
8.0–10.5% |
Enhances ductility and resistance to acids. |
|
Manganese (Mn) |
≤ 2.0% |
Improves hot working and strength. |
|
Silicon (Si) |
≤ 0.75% |
Aids in deoxidation and scaling resistance. |
|
Phosphorus (P) |
≤ 0.045% |
Controls impurities to maintain material quality. |
|
Sulfur (S) |
≤ 0.03% |
Minimizes brittleness for better machinability. |
|
Nitrogen (N) |
≤ 0.10% |
Boosts pitting resistance and strength. |
Gangsteel adheres to these compositions for SA240 304, compatible with JIS G 4304 stainless steel plate standards.
SA240 304 exhibits mechanical properties suitable for various applications. The table below summarizes these as per ASME SA240:
|
Property |
SA240 304 Value |
Description |
|---|---|---|
|
Tensile Strength (min) |
515 MPa (75 ksi) |
Maximum stress before breaking. |
|
Yield Strength (min) |
205 MPa (30 ksi) |
Stress at plastic deformation start (0.2% offset). |
|
Elongation (min) |
40% (in 2 inches) |
Measure of ductility 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 calculations. |
These properties position SA240 304 above options like SA240 Gr 201, with Gangsteel offering SA240 Gr 304L for weld-specific needs.
SA240 304 has equivalents across standards for flexible use. The table below lists common ones:
|
Standard |
Equivalent Grade |
Description |
|---|---|---|
|
UNS |
S30400 |
Universal identifier for sourcing. |
|
EN/DIN |
1.4301 |
European grade with similar attributes. |
|
JIS |
SUS304 |
Japanese equivalent for regional applications. |
|
ISO |
X5CrNi18-10 |
International standard for global projects. |
|
GB (China) |
0Cr18Ni9 |
Chinese grade for domestic manufacturing. |
Gangsteel’s SA240 304 integrates with these, supporting ASTM A 959 stainless steel plates.
SA240 304 is applied in multiple sectors due to its resistance and strength. The table below highlights uses:
|
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 304 for systems.
The density of SA240 304 is 7.93 g/cm³ (7930 kg/m³). To calculate weight:
Weight (kg) = Density (kg/m³) × Volume (m³)
Volume (m³) = Length (m) × Width (m) × Thickness (m)
Example:
This assists in planning for SA240 Gr 304 or SA240 Gr 310S.
SA240 304 offers balanced performance. The table below compares it with Gangsteel grades:
|
Grade |
Key Features |
Best Use Case |
|---|---|---|
|
Corrosion-resistant, strong. |
General fabrication, food equipment. |
|
|
Low carbon, weldable. |
Welded tanks, chemical lines. |
|
|
Molybdenum for chloride resistance. |
Marine, harsh environments. |
|
|
Lower cost, reduced nickel. |
Indoor, mild conditions. |
Gangsteel’s nickel alloy steel plates provide alternatives for extreme uses.
Gangsteel, a stainless solution provider in China, offers SA240 304 stainless steel with:
SA240 304 stainless steel provides corrosion resistance and strength for chemical, food, and construction applications. With specified composition and properties, it meets 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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