ASTM A240/ASME SA240 UNS S44400 Stainless Steel 444 sheet

 

ASTM A240/ASME SA240 UNS S44400 Stainless Steel 444 Sheet plate supplier

 

For applications requiring superior corrosion resistance, particularly in chloride-rich environments, along with excellent formability and cost-effectiveness, ASTM A240/ASME SA240 UNS S44400 Stainless Steel 444 Sheet is an ideal choice. As a leading uns stainless supplier, Gangsteel offers high-quality sa 240/a 240 uns s44400 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 S44400 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS S44400 price per kg. Whether you're an engineer designing water tanks or a procurement specialist sourcing for food processing equipment, this article will clarify why 444 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 s43932, sa 240/a 240 uns s43035, and sa 240/a 240 uns s30400.

Why Choose ASTM A240/ASME SA240 UNS S44400 Stainless Steel 444 Sheet?

 

ASTM A240/ASME SA240 UNS S44400, commonly known as 444 stainless steel, is a ferritic stainless steel with 17.5-19.5% chromium, 1.75-2.5% molybdenum, and stabilization with titanium and niobium. Designed for excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments, it is ideal for applications like water tanks, food processing equipment, and heat exchangers. The low carbon content and stabilization with titanium and niobium enhance weldability, making it suitable for welded structures without post-weld annealing.

The molybdenum addition gives ASTM A240/ASME SA240 UNS S44400 stainless steel 444 sheet a significant advantage over sa 240/a 240 uns s43932 in chloride-rich environments, with a pitting resistance equivalent number (PREN) of ~24-28. Its ferritic structure and low nickel content make it more cost-effective than austenitic grades like sa 240/a 240 uns s30400.

Key benefits of ASTM A240/ASME SA240 UNS S44400 stainless steel 444 sheet include:

• Superior Corrosion Resistance: Molybdenum (1.75-2.5%) enhances resistance to pitting and crevice corrosion, outperforming sa 240/a 240 uns s43035 in chloride environments.
• Enhanced Weldability: Titanium and niobium stabilization (0.20 + 4(C+N) to 0.80%) minimizes intergranular corrosion, ideal for welded applications.
• Cost-Effective: Low nickel content reduces costs compared to sa 240/a 240 uns s30400, while maintaining comparable corrosion resistance.
• Good Formability: Ferritic structure allows for excellent forming, suitable for water tanks and food processing equipment.

Case Study: A water tank manufacturer in India used sa 240/a 240 uns s44400 sheets for potable water storage, achieving a 35% longer service life due to its chloride resistance compared to sa 240/a 240 uns s43932.

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ASTM A240/ASME SA240 UNS S44400 Chemical Composition

 

The ASTM A240/ASME SA240 UNS S44400 chemical composition is optimized for corrosion resistance, weldability, and formability, compliant with sa 240/a 240 uns stainless grades standards.

The high chromium (17.5-19.5%) and molybdenum (1.75-2.5%) content provide excellent corrosion resistance, while titanium and niobium stabilization (0.20 + 4(C+N) to 0.80%) prevent intergranular corrosion. The low carbon (≤ 0.025%) and low nickel (≤ 1.0%) content ensure a ferritic structure, making ASTM A240/ASME SA240 UNS S44400 more cost-effective than sa 240/a 240 uns s30400.

Element	Percentage (%)
Chromium (Cr)	17.5 – 19.5
Molybdenum (Mo)	1.75 – 2.5
Nickel (Ni)	≤ 1.0
Titanium (Ti) + Niobium (Nb)	0.20 + 4(C+N) – 0.80
Carbon (C)	≤ 0.025
Nitrogen (N)	≤ 0.035
Manganese (Mn)	≤ 1.0
Silicon (Si)	≤ 1.0
Phosphorus (P)	≤ 0.040
Sulfur (S)	≤ 0.030
Iron (Fe)	Balance (~80%)

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ASTM A240/ASME SA240 UNS S44400 Mechanical Properties

 

The ASTM A240/ASME SA240 UNS S44400 mechanical properties offer a balance of strength, ductility, and corrosion resistance, suitable for demanding applications.

These properties ensure that ASTM A240/ASME SA240 UNS S44400 stainless steel 444 sheet can withstand mechanical stresses in chloride-rich environments. Annealing at 760-816°C (1400-1500°F) optimizes UNS S44400 mechanical properties for formability and corrosion resistance.

Property	Value at 20°C
Tensile Strength (MPa)	≥ 415 (60 ksi)
Yield Strength (MPa)	≥ 275 (40 ksi)
Elongation (%)	≥ 20
Hardness (HBW)	≤ 217
Density	7.7 g/cm³ (0.278 lb/in³)

At Gangsteel, we’ve seen clients use sa 240/a 240 uns s44400 sheets in water tanks, where its performance surpasses sa 240/a 240 uns s43932 due to enhanced chloride resistance.

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ASTM A240/ASME SA240 UNS S44400 Specifications and Forms

 

As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s44400 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 50 mm (plate)
• Width: Up to 2000 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 s44400 sheets for water tanks, UNS S44400 plates for food processing equipment

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 300 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 S44400 bars for structural components

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 water tanks and food processing 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 S44400 material specifications.

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Applications of ASTM A240/ASME SA240 UNS S44400 Stainless Steel 444 Sheet

 

ASTM A240/ASME SA240 UNS S44400 stainless steel 444 sheetis tailored for industries requiring superior corrosion resistance in chloride-rich environments, combined with formability and cost-effectiveness. Its molybdenum content and stabilization ensure durability in demanding applications.

Key ASTM A240/ASME SA240 UNS S44400 applications include:

• Water Tanks: sa 240/a 240 uns s44400 sheets for potable water storage and industrial tanks.
• Food Processing: UNS S44400 plates for equipment requiring hygiene and corrosion resistance.
• Heat Exchangers: ASTM A240/ASME SA240 UNS S44400 bars for components in chloride-rich environments.
• Automotive: Exhaust system components and catalytic converters.
• Architectural: Cladding and decorative panels for exterior applications.

Case Study: A food processing facility in India used sa 240/a 240 uns s44400 sheets for storage tanks, reducing corrosion-related maintenance by 30% compared to sa 240/a 240 uns s43035 due to its chloride resistance.

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ASTM A240/ASME SA240 UNS S44400 vs Related Grades

 

To aid in material selection, here’s a comparison of sa 240/a 240 uns s44400 with sa 240/a 240 uns s43932, sa 240/a 240 uns s43035, and sa 240/a 240 uns s30400:

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 S44400	ASME SA240 UNS S43932	ASME SA240 UNS S43035	ASME SA240 UNS S30400
UNS Number	S44400	S43932	S43035	S30400
Type	Ferritic	Ferritic	Ferritic	Austenitic
Chromium Content	17.5-19.5%	17.0-19.0%	17.0-19.0%	18.0-20.0%
Nickel Content	≤ 1.0%	≤ 0.5%	≤ 0.5%	8.0-10.5%
Molybdenum Content	1.75-2.5%	-	-	-
Stabilizer	Ti+Nb: 0.20 + 4(C+N) – 0.80%	Ti+Nb: 0.20 + 4(C+N) – 0.75%	Titanium	-
Carbon Content	≤ 0.025%	≤ 0.03%	≤ 0.07%	≤ 0.08%
Corrosion Resistance	Excellent in chlorides	Good, stabilized	Good, stabilized	Good in mild environments
Strength	Moderate	Moderate	Moderate	Moderate
Temp Range	Up to 800°C (1472°F)	Up to 800°C (1472°F)	Up to 800°C (1472°F)	Up to 870°C (1598°F)
Cost (USD/kg)	4-8	3-6	3-6	5-10
Applications	Water tanks, food processing	Automotive, architectural	Automotive, appliances	Food processing, architectural

• ASTM A240/ASME SA240 UNS S44400 vs ASME SA240 UNS S43932: S44400 offers superior chloride resistance due to molybdenum, while sa 240/a 240 uns s43932 is cost-effective for automotive applications.
• ASTM A240/ASME SA240 UNS S44400 vs ASME SA240 UNS S43035: S44400 provides better corrosion resistance with molybdenum, while sa 240/a 240 uns s43035 is suitable for less corrosive environments.
• ASTM A240/ASME SA240 UNS S44400 vs ASME SA240 UNS S30400: S44400 is more cost-effective and resistant to chloride corrosion, while sa 240/a 240 uns s30400 offers versatility in diverse environments.

Conclusion: Choose sa 240/a 240 uns s44400 for chloride-resistant applications like water tanks, sa 240/a 240 uns s43932 for cost-effective automotive uses, sa 240/a 240 uns s43035 for less corrosive environments, or sa 240/a 240 uns s30400 for versatile corrosion resistance.

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ASTM A240/ASME SA240 UNS S44400 Equivalent Materials

 

ASTM A240/ASME SA240 UNS S44400aligns 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 S44400 a versatile choice for corrosion-resistant applications.

Standard	Grade
UNS	S44400
W.Nr.	1.4521
EN	X2CrMoTi18-2
JIS	SUS 444
GB	00Cr18Mo2
ASTM	A240 444
ASME	SA240 444

Note: ASTM A240/ASME SA240 UNS S44400 equivalent grades comply with sa 240/a 240 uns stainless grades, JIS, and GB standards, offering interchangeability with sa 240/a 240 uns s43932 for similar applications.

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ASTM A240/ASME SA240 UNS S44400 Allowable Stress

 

The allowable stress values for ASTM A240/ASME SA240 UNS S44400, 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 chloride-rich 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 s44400 performs reliably in water tanks and food processing equipment.

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ASTM A240/ASME SA240 UNS S44400 Price

 

The ASTM A240/ASME SA240 UNS S44400 price per kg ranges from USD 4-8 per kg (FOB), influenced by several factors:

The cost-effectiveness and chloride resistance of ASTM A240/ASME SA240 UNS S44400 make it a preferred choice for water tanks and food processing applications.

• Alloy Content: Molybdenum (1.75-2.5%) increases costs compared to sa 240/a 240 uns s43932.
• Market Demand: High demand in water tank and food processing industries drives UNS S44400 price.
• Product Form: ASTM A240/ASME SA240 UNS S44400 plates may cost more than sheets due to processing complexity.
• Global Supply Chain: Freight and raw material availability impact ASTM A240/ASME SA240 UNS S44400 cost.

For a precise ASTM A240/ASME SA240 UNS S44400 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 s44400 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 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 s43035: Ferritic for automotive and appliance applications.
• 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 s44400 in water tank, food processing, and heat exchanger 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 S44400 and ASME SA240 UNS S43932?

A: ASTM A240/ASME SA240 UNS S44400 offers superior chloride resistance due to molybdenum, while sa 240/a 240 uns s43932 is cost-effective for automotive applications with less corrosive exposure.

Q: Is ASTM A240/ASME SA240 UNS S44400 suitable for water tank applications?

A: Yes, its molybdenum content and stabilization ensure excellent resistance to chloride corrosion, making it ideal for potable water tanks compared to sa 240/a 240 uns s43035.

Q: How does the price of ASTM A240/ASME SA240 UNS S44400 compare to ASME SA240 UNS S30400?

A: ASTM A240/ASME SA240 UNS S44400 is typically 20-30% less expensive than sa 240/a 240 uns s30400 due to lower nickel content, offering cost-effective performance for chloride-resistant applications.

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Contact Us

 

For sa 240/a 240 uns s44400 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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