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For applications requiring cost-effective corrosion resistance, high strength, and excellent formability in mild environments, ASTM A240/ASME SA240 UNS S20400 Stainless Steel Plate is an excellent choice.
As a premier uns stainless supplier, Gangsteel specializes in providing top-quality sa 240/a 240 uns s20400 plates, sheets, coils, bars, and custom components, all compliant with sa 240/a 240 uns stainless grades standards, including ASTM A240 and ASME SA240. With an extensive inventory exceeding 600 tons and advanced manufacturing capabilities, Gangsteel ensures swift delivery and tailored solutions for clients worldwide.
Gangsteel explores the ASTM A240/ASME SA240 UNS S20400 chemical composition, mechanical properties, corrosion resistance, weldability, stainless steel surface finishes, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS S20400 price per kg. Whether you're an engineer designing structural components or a procurement specialist sourcing for appliance manufacturing, this article will clarify why 204 stainless steel is a trusted option.
Explore our sa 240/a 240 uns stainless grades portfolio for related grades like sa 240/a 240 uns s20103, sa 240/a 240 uns s20153, sa 240/a 240 uns s20161, sa 240/a 240 uns s20200, and sa 240/a 240 uns s20910.
ASTM A240/ASME SA240 UNS S20400, commonly known as 204 stainless steel, is a low-carbon, nitrogen-enhanced austenitic stainless steel with 15.0-17.0% chromium, 1.5-3.0% nickel, 7.0-9.0% manganese, and 0.15-0.30% nitrogen. It is designed as a cost-effective alternative to higher-nickel grades like sa 240/a 240 uns s30400, offering good corrosion resistance in mild environments, excellent formability, and high strength due to nitrogen and manganese additions. The low carbon content (≤ 0.03%) enhances weldability, making it ideal for applications in appliance, automotive, and general-purpose industries.
The ASTM A240/ASME SA240 UNS S20400 stainless steel plate provides higher strength than sa 240/a 240 uns s20103 and sa 240/a 240 uns s20153 due to its elevated nitrogen and manganese content, though it has slightly lower corrosion resistance compared to sa 240/a 240 uns s20200. Its affordability and enhanced mechanical properties make it a preferred choice for structural and decorative applications.
Key benefits of ASTM A240/ASME SA240 UNS S20400 stainless steel plate include:
Case Study: An appliance manufacturer in India used sa 240/a 240 uns s20400 plates for washing machine drums, achieving a 25% cost reduction compared to sa 240/a 240 uns s30400 while maintaining strength and corrosion resistance in mild environments.
Keywords: ASTM A240/ASME SA240 UNS S20400 stainless steel plate, UNS S20400 plate, 204 stainless steel, cost-effective stainless steel plate
ASTM A240/ASME SA240 UNS S20400offers moderate corrosion resistance in mild environments, such as indoor settings or areas with low humidity and minimal exposure to corrosive agents. Its 15.0-17.0% chromium content provides a protective oxide layer, suitable for applications like appliance components and structural parts. The nitrogen content (0.15-0.30%) enhances pitting resistance slightly compared to sa 240/a 240 uns s20103, but it is less resistant to pitting and crevice corrosion than molybdenum-containing grades like sa 240/a 240 uns s20161 or sa 240/a 240 uns s31603. For chloride-rich or acidic environments, grades like sa 240/a 240 uns s32550 are recommended.
Keywords: ASTM A240/ASME SA240 UNS S20400 corrosion resistance, UNS S20400 corrosion properties, 204 corrosion resistance
The low carbon content (≤ 0.03%) of ASTM A240/ASME SA240 UNS S20400 enhances its weldability by reducing the risk of carbide precipitation and intergranular corrosion during welding. This makes it superior to sa 240/a 240 uns s20200 for welded structures, as the lower carbon content minimizes sensitization. It can be welded using common techniques such as TIG, MIG, and resistance welding, with appropriate filler materials to maintain corrosion resistance. Compared to sa 240/a 240 uns s20161, UNS S20400 offers better weldability due to its lower carbon content, making it ideal for applications like appliance manufacturing and structural components.
Keywords: ASTM A240/ASME SA240 UNS S20400 weldability, UNS S20400 welding properties, 204 weldability
The surface finish of ASTM A240/ASME SA240 UNS S20400 stainless steel plate significantly impacts its aesthetic appeal, functionality, and application suitability. Gangsteel offers a variety of surface finishes to meet diverse project requirements, as detailed below:
|
Surface Finish |
Definition/Feature |
Summary of Manufacturing Method |
Application/Use |
|---|---|---|---|
|
NO.1 |
Silver white, matte |
Hot rolled to specified thickness, followed by heat treatment and pickling |
Chemical tank, pipe, no need for surface gloss purposes |
|
2B |
Stronger gloss than NO.2D |
Cold rolled, heat treated, pickled, and lightly cold rolled by polishing rollers |
Medical equipment, food industry, construction material, kitchen utensils, general materials |
|
NO.2D/2BB |
Silver white |
Heat treatment and pickling after cold rolling |
General materials, deep drawing materials |
|
NO.3 |
Rough grinding |
Polished with No.100 to No.120 abrasives (JIS R6001) or 100~200# grinding belt |
Kitchen utensils, building construction, building materials |
|
NO.4 (4K) |
Intermediate grinding |
Polished with No.150 to No.180 abrasives (JIS R6001) or 150~180# stone abrasive belt |
Kitchen utensils, building construction, medical equipment, building materials |
|
NO.240 |
Fine grinding |
Grinding with 240# stone abrasive belt |
Kitchenware |
|
NO.320 |
Very fine grinding |
Grinding with 320# abrasive belt |
Kitchenware |
|
NO.400 |
Gloss close to BA |
Grinding with 400# polishing wheel |
General timber, construction timber, kitchen utensils |
|
HL |
Hairline grinding, continuous polishing streaks |
Polished with suitable grain size abrasive (150~240#) for hairline grinding |
Building construction, buildings, construction materials |
|
BA (No.6/BA1/BA0) |
Bright as a mirror |
Bright heat treatment after cold rolling, high surface reflectivity |
Kitchen utensils, electric equipment, building construction, building materials |
|
NO.7 |
Close to mirror polishing |
Grinding with 600# rotary polishing wheel |
For art and decoration |
|
NO.8 (Mirror/8K) |
Shining like a mirror |
Grinding mirrors with polishing wheels |
Building construction, reflector, for decoration |
These surface finishes allow sa 240/a 240 uns s20400 to be tailored for aesthetic or functional requirements, such as the mirror-like BA finish for decorative panels or the matte NO.1 finish for structural components.
Keywords: ASTM A240/ASME SA240 UNS S20400 surface finish, UNS S20400 stainless steel surface, 204 surface finishes
The ASTM A240/ASME SA240 UNS S20400 chemical composition is optimized for high strength, formability, and cost-effectiveness, compliant with sa 240/a 240 uns stainless grades standards.
The high manganese (7.0-9.0%) and nitrogen (0.15-0.30%) content, combined with low nickel (1.5-3.0%), maintain the austenitic structure while reducing costs compared to sa 240/a 240 uns s30400. The chromium content (15.0-17.0%) provides moderate corrosion resistance, while the low carbon content (≤ 0.03%) enhances weldability compared to sa 240/a 240 uns s20200.
|
Element |
Percentage (%) |
|---|---|
|
Chromium (Cr) |
15.0 – 17.0 |
|
Nickel (Ni) |
1.5 – 3.0 |
|
Manganese (Mn) |
7.0 – 9.0 |
|
Nitrogen (N) |
0.15 – 0.30 |
|
Carbon (C) |
≤ 0.03 |
|
Silicon (Si) |
≤ 1.0 |
|
Phosphorus (P) |
≤ 0.045 |
|
Sulfur (S) |
≤ 0.030 |
|
Iron (Fe) |
Balance (~65%) |
Keywords: ASTM A240/ASME SA240 UNS S20400 chemical composition, UNS S20400 composition, 204 chemistry, ASME SA240 Gr S20400 composition
The ASTM A240/ASME SA240 UNS S20400 mechanical properties offer a balance of high strength, excellent ductility, and formability, suitable for demanding structural and appliance applications.
These properties ensure that ASTM A240/ASME SA240 UNS S20400 stainless steel plate can withstand moderate mechanical stresses in mild environments. Annealing at 1010-1120°C (1850-2048°F) optimizes UNS S20400 mechanical properties for strength and formability.
|
Property |
Value at 20°C |
|---|---|
|
Tensile Strength (MPa) |
≥ 690 (100 ksi) |
|
Yield Strength (MPa) |
≥ 310 (45 ksi) |
|
Elongation (%) |
≥ 40 |
|
Hardness (HBW) |
≤ 241 |
|
Density |
7.8 g/cm³ (0.282 lb/in³) |
At Gangsteel, we’ve seen clients use sa 240/a 240 uns s20400 plates in structural components, where its high strength and formability provide advantages over sa 240/a 240 uns s20161.
Keywords: ASTM A240/ASME SA240 UNS S20400 mechanical properties, UNS S20400 strength, 204 mechanical properties, ASME SA240 Gr S20400 mechanical properties
As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s20400 plates, sheets, coils, bars, and custom components, compliant with sa 240/a 240 uns stainless grades standards:
Our state-of-the-art processing facilities ensure precision and quality, meeting the diverse needs of global projects, from standard sizes to custom-cut components.
Note: Need a specific size or finish? Gangsteel offers custom solutions, including precision cutting and heat treatments, to meet sa 240/a 240 uns stainless grades requirements. Contact us at admin@gangsteel.com for bespoke ASTM A240/ASME SA240 UNS S20400 material specifications.
Keywords: ASTM A240/ASME SA240 UNS S20400 stainless steel plate specifications, UNS S20400 plate specifications, ASME SA 240 Gr S20400 coil, ASME SA 240 Gr S20400 bar
ASTM A240/ASME SA240 UNS S20400 stainless steel plateis tailored for industries requiring high strength, excellent formability, and cost-effective corrosion resistance in mild environments. Its nitrogen-enhanced austenitic structure ensures versatility in various applications.
Key ASTM A240/ASME SA240 UNS S20400 applications include:
Case Study: A structural engineering firm in India used sa 240/a 240 uns s20400 plates for building frameworks, achieving a 20% cost reduction compared to sa 240/a 240 uns s30400 while maintaining strength and corrosion resistance.
Keywords: ASTM A240/ASME SA240 UNS S20400 applications, UNS S20400 uses, 204 applications, ASME SA240 Gr S20400 applications
To aid in material selection, here’s a comparison of sa 240/a 240 uns s20400 with sa 240/a 240 uns s20103, sa 240/a 240 uns s20153, sa 240/a 240 uns s20161, sa 240/a 240 uns s20200, and sa 240/a 240 uns s20910:
This comparison highlights the unique advantages of each grade, helping you select the optimal material for your project requirements.
|
Property |
ASTM A240/ASME SA240 UNS S20400 |
ASME SA240 UNS S20103 |
ASME SA240 UNS S20153 |
ASME SA240 UNS S20161 |
ASME SA240 UNS S20200 |
ASME SA240 UNS S20910 |
|---|---|---|---|---|---|---|
|
UNS Number |
S20400 |
S20103 |
S20153 |
S20161 |
S20200 |
S20910 |
|
Type |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
|
Chromium Content |
15.0-17.0% |
16.0-18.0% |
16.0-17.5% |
15.0-18.0% |
17.0-19.0% |
20.5-23.5% |
|
Nickel Content |
1.5-3.0% |
3.5-5.5% |
4.0-5.0% |
4.0-6.0% |
4.0-6.0% |
11.5-13.5% |
|
Manganese Content |
7.0-9.0% |
5.5-7.5% |
6.4-7.5% |
4.0-6.0% |
7.5-10.0% |
4.0-6.0% |
|
Molybdenum Content |
- |
- |
- |
0.5-2.0% |
- |
1.5-3.0% |
|
Nitrogen Content |
0.15-0.30% |
≤ 0.25% |
0.10-0.25% |
0.08-0.20% |
≤ 0.25% |
0.20-0.40% |
|
Carbon Content |
≤ 0.03% |
≤ 0.03% |
≤ 0.03% |
≤ 0.15% |
≤ 0.15% |
≤ 0.06% |
|
Corrosion Resistance |
Moderate in mild environments |
Moderate in mild environments |
Moderate in mild environments |
Moderate in mild environments |
Good in mild environments |
Excellent in chlorides |
|
Strength |
Moderate |
Moderate |
Moderate |
Moderate |
Moderate |
High |
|
Temp Range |
Up to 870°C (1598°F) |
Up to 870°C (1598°F) |
Up to 870°C (1598°F) |
Up to 870°C (1598°F) |
Up to 870°C (1598°F) |
Up to 870°C (1598°F) |
|
Cost (USD/kg) |
3-6 |
3-6 |
3-6 |
4-7 |
4-7 |
8-12 |
|
Applications |
Appliances, structural |
Architectural, appliances |
Architectural, transportation |
Appliances, automotive trim |
Architectural, appliances |
Chemical, marine |
Conclusion: Choose sa 240/a 240 uns s20400 for high-strength, cost-effective applications in mild environments, sa 240/a 240 uns s20103 or sa 240/a 240 uns s20153 for better corrosion resistance, sa 240/a 240 uns s20161 for improved pitting resistance, sa 240/a 240 uns s20200 for better corrosion resistance, or sa 240/a 240 uns s20910 for high-strength, corrosion-resistant applications.
Keywords: ASTM A240/ASME SA240 UNS S20400 vs ASME SA240 UNS S20103, ASTM A240/ASME SA240 UNS S20400 vs ASME SA240 UNS S20153, ASTM A240/ASME SA240 UNS S20400 vs ASME SA240 UNS S20161, ASTM A240/ASME SA240 UNS S20400 vs ASME SA240 UNS S20200, ASTM A240/ASME SA240 UNS S20400 vs ASME SA240 UNS S20910, 204 comparison
ASTM A240/ASME SA240 UNS S20400aligns with international standards for global compatibility, ensuring seamless integration into projects worldwide.
The equivalent grades allow for flexibility in sourcing materials across different regions, making ASTM A240/ASME SA240 UNS S20400 a versatile choice for cost-effective applications.
|
Standard |
Grade |
|---|---|
|
UNS |
S20400 |
|
W.Nr. |
1.4597 |
|
EN |
X8CrMnCuNB17-8-3 |
|
ASTM |
A240 |
|
ASME |
SA240 |
Note: ASTM A240/ASME SA240 UNS S20400 equivalent grades comply with sa 240/a 240 uns stainless grades standards, offering interchangeability with sa 240/a 240 uns s20103 for similar applications.
Keywords: ASTM A240/ASME SA240 UNS S20400 equivalent, UNS S20400 equivalent, ASME SA 240 Gr S20400 material standards, EN X8CrMnCuNB17-8-3
The allowable stress values for ASTM A240/ASME SA240 UNS S20400, per ASME BPVC Section II, Part D, ensure reliable performance in mild environments.
These values reflect the material’s ability to withstand moderate mechanical stresses while maintaining corrosion resistance in non-aggressive conditions.
|
Temperature (°C) |
Allowable Stress (MPa) |
|---|---|
|
100 |
140 |
|
200 |
130 |
|
300 |
120 |
|
400 |
110 |
|
500 |
100 |
Note: These values ensure sa 240/a 240 uns s20400 performs reliably in appliance and structural applications.
Keywords: ASTM A240/ASME SA240 UNS S20400 allowable stress, UNS S20400 strength, ASME SA240 Gr S20400 material stress
The ASTM A240/ASME SA240 UNS S20400 price per kg ranges from USD 3-6 per kg (FOB), influenced by several factors:
The high strength and cost-effectiveness of ASTM A240/ASME SA240 UNS S20400 make it a preferred choice for appliance and structural applications.
For a precise ASTM A240/ASME SA240 UNS S20400 price per kg or bulk discounts, contact Gangsteel at admin@gangsteel.com.
Keywords: ASTM A240/ASME SA240 UNS S20400 price per kg, UNS S20400 cost, 204 price
As a leading uns stainless supplier, Gangsteel offers a wide range of sa 240/a 240 uns stainless grades to complement sa 240/a 240 uns s20400 for various applications:
This diverse portfolio ensures clients can find the ideal material for their specific project needs, from corrosion resistance to high-temperature performance.
Note: These grades complement sa 240/a 240 uns s20400 in appliance, structural, and general-purpose applications. Contact Gangsteel for a full catalog to find the perfect material for your project.
Keywords: ASTM A240/ASME SA240 UNS S20400 related grades, UNS S20400 stainless steel grades, 204 grades
Q: What is the main difference between ASTM A240/ASME SA240 UNS S20400 and ASME SA240 UNS S20200?
A: ASTM A240/ASME SA240 UNS S20400 offers higher strength due to elevated manganese and nitrogen content, while sa 240/a 240 uns s20200 provides better corrosion resistance due to higher chromium and nickel content.
Q: Is ASTM A240/ASME SA240 UNS S20400 suitable for structural applications?
A: Yes, its high strength and excellent formability make it ideal for structural components in mild environments compared to sa 240/a 240 uns s20161.
Q: How does the price of ASTM A240/ASME SA240 UNS S20400 compare to ASME SA240 UNS S20910?
A: ASTM A240/ASME SA240 UNS S20400 is typically 50-60% less expensive than sa 240/a 240 uns s20910 due to its lower alloy content, offering cost-effective performance for mild environments.
Keywords: ASTM A240/ASME SA240 UNS S20400 FAQ, UNS S20400 stainless steel questions, 204 FAQ
For sa 240/a 240 uns s20400 quotes, technical data sheets, or custom solutions, contact Gangsteel at admin@gangsteel.com. Explore our sa 240/a 240 uns stainless grades portfolio for more options.
Keywords: ASTM A240/ASME SA240 UNS S20400 supplier, Gangsteel stainless steel exporter, UNS S20400 plate supplier
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