ASTM A240/ASME SA240 UNS S31803 Stainless Steel sheet

 

ASTM A240/ASME SA240 UNS S31803 Stainless Steel Sheet for sale

 

For applications requiring a combination of high strength, excellent corrosion resistance, and cost-effectiveness, ASTM A240/ASME SA240 UNS S31803 Stainless Steel Sheet is a top choice. As a leading uns stainless supplier, Gangsteel offers premium sa 240/a 240 uns s31803 sheets, plates, coils, bars, and custom components, all compliant with sa 240/a 240 uns stainless grades standards, including ASTM A240 and ASME SA240. With an inventory exceeding 600 tons and advanced processing capabilities, we ensure rapid delivery and tailored solutions for clients worldwide.

This comprehensive guide explores the ASTM A240/ASME SA240 UNS S31803 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS S31803 price per kg. Whether you're an engineer designing marine structures or a procurement specialist sourcing for chemical processing systems, this article will clarify why 2205 (UNS S31803) 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 s32304, sa 240/a 240 uns s32205, sa 240/a 240 uns s32750, and sa 240/a 240 uns s20100.

Why Choose ASTM A240/ASME SA240 UNS S31803 Stainless Steel Sheet?

 

ASTM A240/ASME SA240 UNS S31803, commonly known as 2205 stainless steel, is a duplex stainless steel with 21.0-23.0% chromium, 4.5-6.5% nickel, 2.5-3.5% molybdenum, and 0.08-0.20% nitrogen. Its balanced ferritic-austenitic microstructure provides nearly twice the yield strength of austenitic grades like sa 240/a 240 uns s31600, combined with excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments. This makes it ideal for marine, chemical, and oil and gas applications.

The molybdenum and nitrogen content give ASTM A240/ASME SA240 UNS S31803 stainless steel 2205 sheet a pitting resistance equivalent number (PREN) of ~34-36, offering superior corrosion resistance compared to sa 240/a 240 uns s32304. Its high strength and good weldability make it a versatile choice for demanding applications.

Key benefits of ASTM A240/ASME SA240 UNS S31803 stainless steel 2205 sheet include:

• High Strength: Nearly twice the yield strength of sa 240/a 240 uns s30400, allowing for thinner sections and weight savings.
• Excellent Corrosion Resistance: High molybdenum (2.5-3.5%) and nitrogen (0.08-0.20%) provide superior resistance to chlorides, outperforming sa 240/a 240 uns s31603 in marine environments.
• Good Weldability: Low carbon content (≤ 0.03%) minimizes intergranular corrosion, suitable for welded structures.
• Cost-Effective: Moderate nickel content reduces costs compared to high-alloy grades like sa 240/a 240 uns s31254.

Case Study: A marine engineering project in the UAE used sa 240/a 240 uns s31803 sheets for seawater piping, achieving a 40% longer service life due to its chloride resistance compared to sa 240/a 240 uns s31603.

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ASTM A240/ASME SA240 UNS S31803 Chemical Composition

 

The ASTM A240/ASME SA240 UNS S31803 chemical composition is optimized for high strength, corrosion resistance, and weldability, compliant with sa 240/a 240 uns stainless grades standards.

The high chromium (21.0-23.0%), molybdenum (2.5-3.5%), and nitrogen (0.08-0.20%) content provide a PREN of ~34-36, ensuring excellent corrosion resistance in chloride-rich environments. The low carbon content (≤ 0.03%) enhances weldability, making ASTM A240/ASME SA240 UNS S31803 superior to sa 240/a 240 uns s32304 for more aggressive environments.

Element	Percentage (%)
Chromium (Cr)	21.0 – 23.0
Nickel (Ni)	4.5 – 6.5
Molybdenum (Mo)	2.5 – 3.5
Nitrogen (N)	0.08 – 0.20
Carbon (C)	≤ 0.03
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 1.0
Phosphorus (P)	≤ 0.030
Sulfur (S)	≤ 0.020
Iron (Fe)	Balance (~65%)

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ASTM A240/ASME SA240 UNS S31803 Mechanical Properties

 

The ASTM A240/ASME SA240 UNS S31803 mechanical properties offer a balance of high strength, ductility, and corrosion resistance, suitable for demanding applications.

These properties ensure that ASTM A240/ASME SA240 UNS S31803 stainless steel 2205 sheet can withstand mechanical stresses in corrosive environments, with significantly higher yield strength than sa 240/a 240 uns s31600. Solution annealing at 1020-1100°C (1868-2012°F) optimizes UNS S31803 mechanical properties for strength and corrosion resistance.

Property	Value at 20°C
Tensile Strength (MPa)	≥ 620 (90 ksi)
Yield Strength (MPa)	≥ 450 (65 ksi)
Elongation (%)	≥ 25
Hardness (HBW)	≤ 293
Density	7.8 g/cm³ (0.282 lb/in³)

At Gangsteel, we’ve seen clients use sa 240/a 240 uns s31803 sheets in offshore platforms, where its high strength and corrosion resistance outperform sa 240/a 240 uns s30400.

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ASTM A240/ASME SA240 UNS S31803 Specifications and Forms

 

As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s31803 sheets, plates, coils, bars, and custom components, compliant with sa 240/a 240 uns stainless grades standards:

Our advanced processing capabilities ensure precision and quality, meeting the diverse needs of global projects, from standard sizes to custom-cut components.

Sheet and Plate

• Thickness: 0.1 mm to 6 mm (sheet), 0.5 mm to 100 mm (plate)
• Width: Up to 4200 mm
• Length: 2000 mm to 12000 mm (or coiled for sheet)
• Surface Finish: Hot-rolled, cold-rolled, annealed, pickled, 2B, No.1, No.4, BA, or customized
• Standards: ASTM A240, ASME SA240
• Applications: sa 240/a 240 uns s31803 sheets for marine piping, UNS S31803 plates for chemical tanks

Coil

• Thickness: 0.1 mm to 6 mm
• Width: Up to 2000 mm
• Standards: ASTM A240, ASME SA240
• Applications: Continuous production for welded pipes and tubes

Bar

• Diameter: 6 mm to 500 mm
• Length: Up to 12000 mm
• Finish: Hot-rolled, cold-drawn, centerless ground
• Standards: ASTM A479, ASME SA-479
• Applications: ASTM A240/ASME SA240 UNS S31803 bars for structural reinforcements

Custom Components

• Types: Flanges (ASME B16.5), fittings, CNC-machined parts, stainless cutting sheet part
• Tolerances: ±0.05 mm for precision components
• Applications: Tailored solutions for marine and chemical industries

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 S31803 material specifications.

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Applications of ASTM A240/ASME SA240 UNS S31803 Stainless Steel 2205 Sheet

 

ASTM A240/ASME SA240 UNS S31803 stainless steel 2205 sheetis tailored for industries requiring high strength and excellent corrosion resistance in chloride-rich and aggressive environments. Its duplex microstructure ensures durability and performance in demanding applications.

Key ASTM A240/ASME SA240 UNS S31803 applications include:

• Marine: sa 240/a 240 uns s31803 sheets for seawater piping and offshore platforms.
• Chemical Processing: UNS S31803 plates for reactors and tanks handling acids.
• Oil and Gas: ASTM A240/ASME SA240 UNS S31803 bars for pipelines in sour gas environments.
• Pulp and Paper: Equipment for bleaching systems.
• Structural Components: Bridges and pressure vessels requiring high strength.

Case Study: An oil and gas facility in India used sa 240/a 240 uns s31803 sheets for pipeline systems, reducing maintenance by 35% compared to sa 240/a 240 uns s31603 due to its superior corrosion resistance and strength.

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ASTM A240/ASME SA240 UNS S31803 vs Related Grades

 

To aid in material selection, here’s a comparison of sa 240/a 240 uns s31803 with sa 240/a 240 uns s32304, sa 240/a 240 uns s32205, sa 240/a 240 uns s31600, and sa 240/a 240 uns s20100:

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 S31803	ASME SA240 UNS S32304	ASME SA240 UNS S32205	ASME SA240 UNS S31600	ASME SA240 UNS S20100
UNS Number	S31803	S32304	S32205	S31600	S20100
Type	Duplex	Duplex	Duplex	Austenitic	Austenitic
Chromium Content	21.0-23.0%	22.0-24.0%	22.0-23.0%	16.0-18.0%	16.0-18.0%
Nickel Content	4.5-6.5%	3.5-5.5%	4.5-6.5%	10.0-14.0%	3.5-5.5%
Molybdenum Content	2.5-3.5%	-	3.0-3.5%	2.0-3.0%	-
Nitrogen Content	0.08-0.20%	0.05-0.20%	0.14-0.20%	-	0.25% max
Carbon Content	≤ 0.03%	≤ 0.03%	≤ 0.03%	≤ 0.08%	≤ 0.15%
Corrosion Resistance	Excellent in chlorides	Good in chlorides	Superior in chlorides	Excellent in chlorides	Moderate in mild environments
Strength	High	High	High	Moderate	Moderate
Temp Range	-50°C to 300°C (-58°F to 572°F)	-50°C to 300°C	-50°C to 300°C	Up to 870°C (1598°F)	Up to 870°C (1598°F)
Cost (USD/kg)	5-10	4-8	5-10	6-12	3-6
Applications	Marine, chemical, oil/gas	Structural, chemical	Marine, chemical	Marine, chemical	General-purpose, architectural

• ASTM A240/ASME SA240 UNS S31803 vs ASME SA240 UNS S32304: S31803 offers superior chloride resistance due to molybdenum, while sa 240/a 240 uns s32304 is more cost-effective for moderate corrosion environments.
• ASTM A240/ASME SA240 UNS S31803 vs ASME SA240 UNS S32205: S31803 provides excellent performance, while sa 240/a 240 uns s32205 offers slightly enhanced corrosion resistance due to higher nitrogen.
• ASTM A240/ASME SA240 UNS S31803 vs ASME SA240 UNS S31600: S31803 provides higher strength and better chloride resistance, while sa 240/a 240 uns s31600 is better for high-temperature applications.
• ASTM A240/ASME SA240 UNS S31803 vs ASME SA240 UNS S20100: S31803 excels in corrosive environments and high-strength applications, while sa 240/a 240 uns s20100 is cost-effective for general-purpose and architectural uses with lower corrosion resistance.

Conclusion: Choose sa 240/a 240 uns s31803 for high-strength, chloride-resistant applications, sa 240/a 240 uns s32304 for cost-effective structural uses, sa 240/a 240 uns s32205 for enhanced corrosion resistance, sa 240/a 240 uns s31600 for versatile high-temperature applications, or sa 240/a 240 uns s20100 for low-cost, general-purpose applications.

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ASTM A240/ASME SA240 UNS S31803 Equivalent Materials

 

ASTM A240/ASME SA240 UNS S31803aligns 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 S31803 a versatile choice for corrosion-resistant applications.

Standard	Grade
UNS	S31803
W.Nr.	1.4462
EN	X2CrNiMoN22-5-3
JIS	SUS 329J3L
GB	00Cr22Ni5Mo3N
ASTM	A240 2304
ASME	SA240 2304

Note: ASTM A240/ASME SA240 UNS S31803 equivalent grades comply with sa 240/a 240 uns stainless grades, JIS, and GB standards, offering interchangeability with sa 240/a 240 uns s32205 for enhanced corrosion resistance.

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ASTM A240/ASME SA240 UNS S31803 Allowable Stress

 

The allowable stress values for ASTM A240/ASME SA240 UNS S31803, per ASME BPVC Section II, Part D, ensure reliable performance in corrosive and high-strength applications.

These values reflect the material’s ability to withstand mechanical stresses while maintaining corrosion resistance in chloride-rich environments.

Temperature (°C)	Allowable Stress (MPa)
100	200
200	185
300	175

Note: These values ensure sa 240/a 240 uns s31803 performs reliably in marine piping and chemical reactors.

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ASTM A240/ASME SA240 UNS S31803 Price

 

The ASTM A240/ASME SA240 UNS S31803 price per kg ranges from USD 5-10 per kg (FOB), influenced by several factors:

The high strength and corrosion resistance of ASTM A240/ASME SA240 UNS S31803 make it a cost-effective choice for demanding applications in aggressive environments.

• Alloy Content: Moderate nickel (4.5-6.5%) and molybdenum (2.5-3.5%) increase costs compared to sa 240/a 240 uns s32304.
• Market Demand: High demand in marine and oil/gas industries drives UNS S31803 price.
• Product Form: ASTM A240/ASME SA240 UNS S31803 plates may cost more than sheets due to processing complexity.
• Global Supply Chain: Freight and raw material availability impact ASTM A240/ASME SA240 UNS S31803 cost.

For a precise ASTM A240/ASME SA240 UNS S31803 price per kg or bulk discounts, contact Gangsteel at admin@gangsteel.com.

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Related Stainless Steel Grades

 

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 s31803 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.

• sa 240/a 240 uns s20100: Cost-effective austenitic stainless steel for general-purpose applications.
• sa 240/a 240 uns s30400: General-purpose austenitic stainless steel.
• sa 240/a 240 uns s30403: Low-carbon for enhanced weldability.
• sa 240/a 240 uns s30409: High-carbon for high-temperature strength.
• sa 240/a 240 uns s30908: Low-carbon for moderate high-temperature applications.
• sa 240/a 240 uns s31000: High-carbon for extreme high-temperature strength.
• sa 240/a 240 uns s31008: Low-carbon for enhanced weldability in high-temperature applications.
• sa 240/a 240 uns s31009: High-carbon for enhanced creep resistance.
• sa 240/a 240 uns s31600: Molybdenum-alloyed for chloride resistance.
• sa 240/a 240 uns s31603: Low-carbon for enhanced weldability in chloride environments.
• sa 240/a 240 uns s31700: High corrosion resistance for chemical processing.
• sa 240/a 240 uns s31703: Low-carbon for acidic environments.
• sa 240/a 240 uns s32100: Titanium-stabilized for high-temperature applications.
• sa 240/a 240 uns s32109: High-carbon for enhanced creep resistance.
• sa 240/a 240 uns s34700: Stabilized for high-temperature corrosion resistance.
• sa 240/a 240 uns s34709: Enhanced creep resistance for high-temperature applications.
• sa 240/a 240 uns s30815: High-temperature corrosion resistance.
• sa 240/a 240 uns n08904: Superior sulfuric acid resistance for chemical applications.
• sa 240/a 240 uns s31254: High corrosion resistance for aggressive environments.
• sa 240/a 240 uns s43932: Ferritic for automotive exhaust systems.
• sa 240/a 240 uns s44400: Ferritic with high corrosion resistance for water tanks.
• sa 240/a 240 uns s32304: Lean duplex for structural applications.
• sa 240/a 240 uns s32205: Duplex for enhanced corrosion resistance.
• sa 240/a 240 uns s32750: Super-duplex for aggressive environments.
• sa 240/a 240 uns s32760: Super-duplex for extreme corrosion resistance.
• sa 240/a 240 uns s32520: Duplex for high-strength applications.
• sa 240/a 240 uns s32550: Enhanced sulfuric acid resistance.

Note: These grades complement sa 240/a 240 uns s31803 in marine, chemical, and oil/gas applications. Contact Gangsteel for a full catalog to find the perfect material for your project.

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FAQ

 

Q: What is the main difference between ASTM A240/ASME SA240 UNS S31803 and ASME SA240 UNS S32304?

A: ASTM A240/ASME SA240 UNS S31803 offers superior chloride resistance due to molybdenum content, while sa 240/a 240 uns s32304 is a lean duplex, more cost-effective for moderate corrosion environments.

Q: Is ASTM A240/ASME SA240 UNS S31803 suitable for marine applications?

A: Yes, its high molybdenum and nitrogen content ensure excellent resistance to chloride corrosion, making it ideal for seawater systems compared to sa 240/a 240 uns s31603.

Q: How does the price of ASTM A240/ASME SA240 UNS S31803 compare to ASME SA240 UNS S20100?

A: ASTM A240/ASME SA240 UNS S31803 is typically 40-50% more expensive than sa 240/a 240 uns s20100 due to its higher alloy content and superior corrosion resistance, but it offers significantly better performance in aggressive environments.

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Contact Us

 

For sa 240/a 240 uns s31803 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.

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