ASTM A240/ASME SA240 UNS N08904 Stainless Steel 904l sheet

 

ASTM A240/ASME SA240 UNS N08904 Stainless Steel 904L Sheet plate supplier

 

For applications requiring exceptional corrosion resistance in aggressive environments, ASTM A240/ASME SA240 UNS N08904 Stainless Steel 904L Sheet is a premier choice. As a leading uns stainless supplier, Gangsteel offers high-quality sa 240/a 240 uns n08904 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 N08904 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS N08904 price per kg. Whether you're an engineer designing chemical processing equipment or a procurement specialist sourcing for marine applications, this article will clarify why 904L 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 s31603, sa 240/a 240 uns s31703, and sa 240/a 240 uns s31254.

Why Choose ASTM A240/ASME SA240 UNS N08904 Stainless Steel 904L Sheet?

 

ASTM A240/ASME SA240 UNS N08904, commonly known as 904L stainless steel, is a low-carbon, high-alloy austenitic stainless steel with 19.0-23.0% chromium, 23.0-28.0% nickel, 4.0-5.0% molybdenum, and 1.0-2.0% copper. The high alloy content provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking in aggressive environments, such as sulfuric acid, chloride-rich, and marine conditions. The low carbon content enhances weldability, making it ideal for applications requiring heavy welding without post-weld annealing.

The high molybdenum and copper content give ASTM A240/ASME SA240 UNS N08904 stainless steel 904L sheet a significant advantage over sa 240/a 240 uns s31603 in highly corrosive environments, particularly in acidic and chloride-rich settings. Its robust properties make it a preferred choice for critical applications.

Key benefits of ASTM A240/ASME SA240 UNS N08904 stainless steel 904L sheet include:

• Superior Corrosion Resistance: High molybdenum (4.0-5.0%) and copper (1.0-2.0%) provide exceptional resistance to acids and chlorides, outperforming sa 240/a 240 uns s31703 in sulfuric acid environments.
• Enhanced Weldability: Low carbon content (≤ 0.02%) minimizes intergranular corrosion during welding, ideal for heavy welding applications.
• High Strength and Durability: Maintains structural integrity in moderate temperatures up to 400°C (752°F).
• Versatility: Suitable for chemical processing, marine, and pharmaceutical applications requiring high corrosion resistance.

Case Study: A chemical plant in the UAE used sa 240/a 240 uns n08904 sheets for sulfuric acid storage tanks, achieving a 50% longer service life due to its superior corrosion resistance compared to sa 240/a 240 uns s31703.

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ASTM A240/ASME SA240 UNS N08904 Chemical Composition

 

The ASTM A240/ASME SA240 UNS N08904 chemical composition is optimized for corrosion resistance, weldability, and strength, compliant with sa 240/a 240 uns stainless grades standards.

The high molybdenum (4.0-5.0%) and copper (1.0-2.0%) content provide a pitting resistance equivalent number (PREN) of ~34-36, making ASTM A240/ASME SA240 UNS N08904 superior to sa 240/a 240 uns s31603 and sa 240/a 240 uns s31703 for acid and chloride resistance. The low carbon content (≤ 0.02%) ensures excellent weldability, minimizing intergranular corrosion.

Element	Percentage (%)
Chromium (Cr)	19.0 – 23.0
Nickel (Ni)	23.0 – 28.0
Molybdenum (Mo)	4.0 – 5.0
Copper (Cu)	1.0 – 2.0
Carbon (C)	≤ 0.02
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 1.0
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.035
Iron (Fe)	Balance (~40%)

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ASTM A240/ASME SA240 UNS N08904 Mechanical Properties

 

The ASTM A240/ASME SA240 UNS N08904 mechanical properties offer a balance of strength, ductility, and corrosion resistance, suitable for demanding applications.

These properties ensure that ASTM A240/ASME SA240 UNS N08904 stainless steel 904L sheet can withstand mechanical stresses in corrosive environments. Solution annealing at 1050-1150°C (1922-2102°F) optimizes UNS N08904 mechanical properties for corrosion resistance and weldability.

Property	Value at 20°C
Tensile Strength (MPa)	≥ 490 (71 ksi)
Yield Strength (MPa)	≥ 215 (31 ksi)
Elongation (%)	≥ 35
Hardness (HRB)	≤ 90
Density	8.0 g/cm³ (0.289 lb/in³)

At Gangsteel, we’ve seen clients use sa 240/a 240 uns n08904 sheets in welded chemical processing tanks, where its performance surpasses sa 240/a 240 uns s31703 in acidic environments.

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ASTM A240/ASME SA240 UNS N08904 Specifications and Forms

 

As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns n08904 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 n08904 sheets for chemical processing tanks, UNS N08904 plates for marine fittings

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 N08904 bars for fittings and fasteners

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 chemical and marine 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 N08904 material specifications.

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Applications of ASTM A240/ASME SA240 UNS N08904 Stainless Steel 904L Sheet

 

ASTM A240/ASME SA240 UNS N08904 stainless steel 904L sheetis tailored for industries requiring superior corrosion resistance in aggressive environments. Its high alloy content ensures excellent performance in acidic, chloride-rich, and marine conditions.

Key ASTM A240/ASME SA240 UNS N08904 applications include:

• Chemical Processing: sa 240/a 240 uns n08904 sheets for sulfuric and phosphoric acid tanks.
• Marine: UNS N08904 plates for seawater piping and fittings.
• Pharmaceutical: ASTM A240/ASME SA240 UNS N08904 bars for high-purity fittings and tubes.
• Pulp and Paper: Equipment for bleaching processes.
• Oil and Gas: Components for sour gas environments.

Case Study: A marine facility in the UAE used sa 240/a 240 uns n08904 sheets for welded seawater piping, achieving a 40% increase in service life due to its chloride resistance compared to sa 240/a 240 uns s31603.

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ASTM A240/ASME SA240 UNS N08904 vs Related Grades

 

To aid in material selection, here’s a comparison of sa 240/a 240 uns n08904 with sa 240/a 240 uns s31603, sa 240/a 240 uns s31703, and sa 240/a 240 uns s31254:

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 N08904	ASME SA240 UNS S31603	ASME SA240 UNS S31703	ASME SA240 UNS S31254
UNS Number	N08904	S31603	S31703	S31254
Type	Austenitic	Austenitic	Austenitic	Austenitic
Chromium Content	19.0-23.0%	16.0-18.0%	18.0-20.0%	19.5-20.5%
Nickel Content	23.0-28.0%	10.0-14.0%	11.0-15.0%	17.5-18.5%
Molybdenum Content	4.0-5.0%	2.0-3.0%	3.0-4.0%	6.0-6.5%
Copper Content	1.0-2.0%	-	-	0.5-1.0%
Carbon Content	≤ 0.02%	≤ 0.03%	≤ 0.03%	≤ 0.02%
Corrosion Resistance	Superior in acids, chlorides	Excellent, enhanced weldability	Superior in acids	Exceptional in chlorides
Strength	Moderate	Moderate	Moderate	High
Temp Range	Up to 400°C (752°F)	Up to 870°C (1598°F)	Up to 870°C (1598°F)	Up to 400°C (752°F)
Cost (USD/kg)	10-20	6-12	8-15	12-25
Applications	Chemical, marine, pharmaceutical	Welded marine, chemical	Welded chemical, pulp/paper	Marine, chemical

• ASTM A240/ASME SA240 UNS N08904 vs ASME SA240 UNS S31603: N08904 offers superior resistance to acids and chlorides due to higher molybdenum and copper, while sa 240/a 240 uns s31603 is cost-effective for welded chloride-resistant applications.
• ASTM A240/ASME SA240 UNS N08904 vs ASME SA240 UNS S31703: N08904 provides better resistance to sulfuric acid due to copper, while sa 240/a 240 uns s31703 is suitable for acidic environments with lower cost.
• ASTM A240/ASME SA240 UNS N08904 vs ASME SA240 UNS S31254: N08904 excels in sulfuric acid environments, while sa 240/a 240 uns s31254 offers superior chloride resistance with higher molybdenum.

Conclusion: Choose sa 240/a 240 uns n08904 for superior acid resistance, sa 240/a 240 uns s31603 for cost-effective welded chloride resistance, sa 240/a 240 uns s31703 for acidic environments, or sa 240/a 240 uns s31254 for exceptional chloride resistance.

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ASTM A240/ASME SA240 UNS N08904 Equivalent Materials

 

ASTM A240/ASME SA240 UNS N08904aligns 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 N08904 a versatile choice for corrosion-resistant applications.

Standard	Grade
UNS	N08904
W.Nr.	1.4539
EN	X1NiCrMoCu25-20-5
JIS	SUS 904L
GB	00Cr20Ni25Mo4.5Cu
ASTM	A240 904l
ASME	SA240 904l

Note: ASTM A240/ASME SA240 UNS N08904 equivalent grades comply with sa 240/a 240 uns stainless grades, JIS, and GB standards, offering interchangeability with sa 240/a 240 uns s31603 for less aggressive environments.

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ASTM A240/ASME SA240 UNS N08904 Allowable Stress

 

The allowable stress values for ASTM A240/ASME SA240 UNS N08904, per ASME BPVC Section II, Part D, ensure reliable performance in corrosive environments.

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

Temperature (°C)	Allowable Stress (MPa)
100	150
200	140
300	130
400	120

Note: These values ensure sa 240/a 240 uns n08904 performs reliably in chemical processing tanks and marine piping.

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ASTM A240/ASME SA240 UNS N08904 Price

 

The ASTM A240/ASME SA240 UNS N08904 price per kg ranges from USD 10-20 per kg (FOB), influenced by several factors:

The superior corrosion resistance and high alloy content make ASTM A240/ASME SA240 UNS N08904 a premium choice for demanding applications in aggressive environments.

• Alloy Content: High molybdenum (4.0-5.0%), nickel (23.0-28.0%), and copper (1.0-2.0%) increase costs compared to sa 240/a 240 uns s31603.
• Market Demand: High demand in chemical and marine industries drives UNS N08904 price.
• Product Form: ASTM A240/ASME SA240 UNS N08904 plates may cost more than sheets due to processing complexity.
• Global Supply Chain: Freight and raw material availability impact ASTM A240/ASME SA240 UNS N08904 cost.

For a precise ASTM A240/ASME SA240 UNS N08904 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 n08904 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 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 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 s2304: Lean duplex for structural applications.
• sa 240/a 240 uns s31803: Duplex for marine 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 n08904 in chemical, marine, and pharmaceutical 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 N08904 and ASME SA240 UNS S31603?

A: ASTM A240/ASME SA240 UNS N08904 offers superior resistance to acids and chlorides due to higher molybdenum and copper content, while sa 240/a 240 uns s31603 is cost-effective for welded chloride-resistant applications.

Q: Is ASTM A240/ASME SA240 UNS N08904 suitable for chemical processing?

A: Yes, its high molybdenum and copper content ensure exceptional resistance to sulfuric and phosphoric acids, making it ideal for chemical processing compared to sa 240/a 240 uns s31703.

Q: How does the price of ASTM A240/ASME SA240 UNS N08904 compare to ASME SA240 UNS S31254?

A: ASTM A240/ASME SA240 UNS N08904 is typically less expensive than sa 240/a 240 uns s31254 due to lower molybdenum content, offering cost-effective performance for acid-resistant applications.

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Contact Us

 

For sa 240/a 240 uns n08904 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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Long-Tail Keywords

 

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