ASTM A240 / ASME SA240 UNS S31277 Stainless Steel Plate

 

ASTM A240/ASME SA240 UNS S31277 Stainless Steel Plate supplier
 

For applications requiring superior corrosion resistance, high strength, and excellent performance in aggressive chloride-rich environments, ASTM A240/ASME SA240 UNS S31277 Stainless Steel Plate is an exceptional choice. As a premier uns stainless supplier, Gangsteel is committed to delivering high-quality sa 240/a 240 uns s31277 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 a robust inventory exceeding 600 tons and cutting-edge manufacturing capabilities, Gangsteel ensures rapid delivery and customized solutions for clients worldwide.

This comprehensive guide explores the ASTM A240/ASME SA240 UNS S31277 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS S31277 price per kg. Whether you're an engineer designing marine equipment or a procurement specialist sourcing for chemical processing systems, this article will clarify why 27-7MO (UNS S31277) 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 n08020, sa 240/a 240 uns n08367, sa 240/a 240 uns n08800, sa 240/a 240 uns n08810, sa 240/a 240 uns n08811, and sa 240/a 240 uns n08926.

Why Choose ASTM A240/ASME SA240 UNS S31277 Stainless Steel Plate?

 

ASTM A240/ASME SA240 UNS S31277, commonly known as 27-7MO, is an advanced austenitic stainless steel with 20.5-23.0% chromium, 26.0-28.0% nickel, 6.5-8.0% molybdenum, and 0.30-0.40% nitrogen. It is designed for exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments, making it ideal for marine, chemical, and oil and gas applications. The high molybdenum and nitrogen content give ASTM A240/ASME SA240 UNS S31277 stainless steel plate a pitting resistance equivalent number (PREN) of ~46-50, offering superior corrosion resistance compared to sa 240/a 240 uns n08926.

The ASTM A240/ASME SA240 UNS S31277 alloy provides excellent weldability and high strength, making it suitable for demanding applications requiring both corrosion resistance and mechanical performance. Its enhanced properties make it a preferred choice over sa 240/a 240 uns n08367 for applications requiring higher strength.

Key benefits of ASTM A240/ASME SA240 UNS S31277 stainless steel plate include:

• Superior Corrosion Resistance: High molybdenum (6.5-8.0%) and nitrogen (0.30-0.40%) content provide exceptional resistance to chlorides, outperforming sa 240/a 240 uns n08020 in severe environments.
• High Strength: Offers robust mechanical properties, surpassing sa 240/a 240 uns s31600 in strength for demanding applications.
• Excellent Weldability: Low carbon content (≤ 0.02%) minimizes intergranular corrosion, ideal for welded structures.
• Versatility: Suitable for marine, chemical, and oil and gas applications, offering comparable or better performance than sa 240/a 240 uns n08367.

Case Study: An oil and gas facility in India used sa 240/a 240 uns s31277 plates for pipelines in chloride-rich environments, achieving a 50% longer service life due to its superior corrosion resistance compared to sa 240/a 240 uns n08926.

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ASTM A240/ASME SA240 UNS S31277 Chemical Composition

 

The ASTM A240/ASME SA240 UNS S31277 chemical composition is optimized for corrosion resistance, strength, and weldability, compliant with sa 240/a 240 uns stainless grades standards.

The high chromium (20.5-23.0%), nickel (26.0-28.0%), molybdenum (6.5-8.0%), and nitrogen (0.30-0.40%) content provide a PREN of ~46-50, ensuring superior corrosion resistance in chloride-rich environments. The low carbon content (≤ 0.02%) enhances weldability, making ASTM A240/ASME SA240 UNS S31277 more resistant to pitting than sa 240/a 240 uns n08800.

Element	Percentage (%)
Chromium (Cr)	20.5 – 23.0
Nickel (Ni)	26.0 – 28.0
Molybdenum (Mo)	6.5 – 8.0
Nitrogen (N)	0.30 – 0.40
Copper (Cu)	0.5 – 1.5
Carbon (C)	≤ 0.02
Manganese (Mn)	0.5 – 2.0
Silicon (Si)	≤ 0.8
Phosphorus (P)	≤ 0.030
Sulfur (S)	≤ 0.010
Iron (Fe)	Balance (~40%)

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ASTM A240/ASME SA240 UNS S31277 Mechanical Properties

 

The ASTM A240/ASME SA240 UNS S31277 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 S31277 stainless steel plate can withstand mechanical stresses in aggressive environments. Solution annealing at 1120-1180°C (2048-2156°F) optimizes UNS S31277 mechanical properties for strength and corrosion resistance.

Property	Value at 20°C
Tensile Strength (MPa)	≥ 770 (112 ksi)
Yield Strength (MPa)	≥ 360 (52 ksi)
Elongation (%)	≥ 30
Hardness (HBW)	≤ 269
Density	8.0 g/cm³ (0.289 lb/in³)

At Gangsteel, we’ve seen clients use sa 240/a 240 uns s31277 plates in chemical reactors, where its high strength and corrosion resistance outperform sa 240/a 240 uns n08367 in demanding conditions.

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ASTM A240/ASME SA240 UNS S31277 Specifications and Forms

 

As a leading uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s31277 plates, sheets, coils, bars, and custom components, compliant with sa 240/a 240 uns stainless grades standards:

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

Plate and Sheet

• Thickness: 0.1 mm to 6 mm (sheet), 0.5 mm to 100 mm (plate)
• Width: Up to 3000 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 s31277 plates for marine piping, UNS S31277 sheets for chemical reactors

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 S31277 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 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 S31277 material specifications.

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Applications of ASTM A240/ASME SA240 UNS S31277 Stainless Steel Plate

 

ASTM A240/ASME SA240 UNS S31277 stainless steel plateis tailored for industries requiring superior corrosion resistance and high strength in aggressive chloride-rich environments. Its advanced austenitic structure ensures durability and performance in demanding applications.

Key ASTM A240/ASME SA240 UNS S31277 applications include:

• Marine: sa 240/a 240 uns s31277 plates for seawater piping and desalination plants.
• Chemical Processing: UNS S31277 sheets for reactors and tanks handling acids and chlorides.
• Oil and Gas: ASTM A240/ASME SA240 UNS S31277 bars for pipelines in sour gas environments.
• Pharmaceutical: Equipment requiring hygiene and corrosion resistance.
• Pulp and Paper: Components for bleaching systems.

Case Study: A chemical processing plant in India used sa 240/a 240 uns s31277 plates for acid storage tanks, reducing corrosion-related maintenance by 45% compared to sa 240/a 240 uns n08926 due to its enhanced strength and corrosion resistance.

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ASTM A240/ASME SA240 UNS S31277 vs Related Grades

 

To aid in material selection, here’s a comparison of sa 240/a 240 uns s31277 with sa 240/a 240 uns n08020, sa 240/a 240 uns n08367, sa 240/a 240 uns n08800, sa 240/a 240 uns n08810, and sa 240/a 240 uns n08811:

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 S31277	ASME SA240 UNS N08020	ASME SA240 UNS N08367	ASME SA240 UNS N08800	ASME SA240 UNS N08810	ASME SA240 UNS N08811	ASME SA240 UNS N08926
UNS Number	S31277	N08020	N08367	N08800	N08810	N08811	N08926
Type	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic
Chromium Content	20.5-23.0%	19.0-21.0%	20.0-22.0%	19.0-23.0%	19.0-23.0%	19.0-23.0%	19.0-21.0%
Nickel Content	26.0-28.0%	32.0-38.0%	23.5-25.5%	30.0-35.0%	30.0-35.0%	30.0-35.0%	24.0-26.0%
Molybdenum Content	6.5-8.0%	2.0-3.0%	6.0-7.0%	-	-	-	6.0-7.0%
Nitrogen Content	0.30-0.40%	-	0.18-0.25%	-	-	-	0.15-0.25%
Copper Content	0.5-1.5%	3.0-4.0%	≤ 0.75%	≤ 0.75%	≤ 0.75%	≤ 0.75%	0.5-1.5%
Carbon Content	≤ 0.02%	≤ 0.07%	≤ 0.03%	≤ 0.10%	0.05-0.10%	0.06-0.10%	≤ 0.02%
Corrosion Resistance	Superior in chlorides	Excellent in sulfuric acid	Superior in chlorides	Good in high-temp	Good in high-temp	Excellent in high-temp	Superior in chlorides
Strength	High	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 1100°C (2012°F)	Up to 1100°C (2012°F)	Up to 1150°C (2102°F)	Up to 870°C (1598°F)
Cost (USD/kg)	12-18	8-12	10-15	7-10	7-10	8-12	10-15
Applications	Marine, chemical, oil/gas	Chemical, pharmaceutical	Marine, chemical	High-temp furnaces	High-temp furnaces	High-temp furnaces	Marine, chemical

• ASTM A240/ASME SA240 UNS S31277 vs ASME SA240 UNS N08020: S31277 excels in chloride-rich environments due to high molybdenum and nitrogen content, while sa 240/a 240 uns n08020 is optimized for sulfuric acid resistance.
• ASTM A240/ASME SA240 UNS S31277 vs ASME SA240 UNS N08367: S31277 offers higher strength and comparable chloride resistance, while sa 240/a 240 uns n08367 provides slightly better pitting resistance in severe conditions.
• ASTM A240/ASME SA240 UNS S31277 vs ASME SA240 UNS N08800: S31277 is suited for chloride-rich applications, while sa 240/a 240 uns n08800 is designed for high-temperature environments.
• ASTM A240/ASME SA240 UNS S31277 vs ASME SA240 UNS N08810: S31277 provides superior chloride resistance, while sa 240/a 240 uns n08810 is optimized for high-temperature strength.
• ASTM A240/ASME SA240 UNS S31277 vs ASME SA240 UNS N08811: S31277 is ideal for marine environments, while sa 240/a 240 uns n08811 excels in extreme high-temperature applications.
• ASTM A240/ASME SA240 UNS S31277 vs ASME SA240 UNS N08926: S31277 offers higher strength and slightly better corrosion resistance, while sa 240/a 240 uns n08926 is a comparable alternative for chloride-rich applications.

Conclusion: Choose sa 240/a 240 uns s31277 for high-strength, chloride-resistant applications in marine and chemical environments, sa 240/a 240 uns n08020 for sulfuric acid environments, sa 240/a 240 uns n08367 or sa 240/a 240 uns n08926 for similar chloride resistance, or sa 240/a 240 uns n08800, sa 240/a 240 uns n08810, or sa 240/a 240 uns n08811 for high-temperature applications.

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ASTM A240/ASME SA240 UNS S31277 Equivalent Materials

 

ASTM A240/ASME SA240 UNS S31277aligns 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 S31277 a versatile choice for corrosion-resistant applications.

Standard	Grade
UNS	S31277
W.Nr.	1.4563
EN	X1NiCrMoCuN28-27-7
ASTM	A240
ASME	SA240

Note: ASTM A240/ASME SA240 UNS S31277 equivalent grades comply with sa 240/a 240 uns stainless grades standards, offering interchangeability with sa 240/a 240 uns n08367 for similar applications.

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ASTM A240/ASME SA240 UNS S31277 Allowable Stress

 

The allowable stress values for ASTM A240/ASME SA240 UNS S31277, 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	180
200	170
300	160
400	150
500	140

Note: These values ensure sa 240/a 240 uns s31277 performs reliably in marine piping and chemical reactors.

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ASTM A240/ASME SA240 UNS S31277 Price

 

The ASTM A240/ASME SA240 UNS S31277 price per kg ranges from USD 12-18 per kg (FOB), influenced by several factors:

The superior corrosion resistance and high strength of ASTM A240/ASME SA240 UNS S31277 make it a premium choice for marine and chemical applications.

• Alloy Content: High nickel (26.0-28.0%), molybdenum (6.5-8.0%), and nitrogen (0.30-0.40%) increase costs compared to sa 240/a 240 uns n08020.
• Market Demand: High demand in marine and chemical industries drives UNS S31277 price.
• Product Form: ASTM A240/ASME SA240 UNS S31277 plates may cost more than sheets due to processing complexity.
• Global Supply Chain: Freight and raw material availability impact ASTM A240/ASME SA240 UNS S31277 cost.

For a precise ASTM A240/ASME SA240 UNS S31277 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 s31277 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 s20200: Austenitic stainless steel with enhanced corrosion resistance for mild environments.
• 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 s31803: Duplex for marine and chemical 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: Super-duplex for high-strength applications.
• sa 240/a 240 uns s32550: Super-duplex for enhanced sulfuric acid resistance.
• sa 240/a 240 uns s41000: Martensitic for high-strength, wear-resistant applications.
• sa 240/a 240 uns s43000: Ferritic for automotive and appliance applications.
• sa 240/a 240 uns s20200: Austenitic stainless steel for mild environments.
• sa 240/a 240 uns n08020: Austenitic stainless steel for sulfuric acid resistance.
• sa 240/a 240 uns n08367: Austenitic stainless steel for superior chloride resistance.
• sa 240/a 240 uns n08800: Austenitic stainless steel for high-temperature furnaces.
• sa 240/a 240 uns n08810: Austenitic stainless steel for high-temperature strength.
• sa 240/a 240 uns n08811: Austenitic stainless steel for extreme high-temperature applications.
• sa 240/a 240 uns n08926: Austenitic stainless steel for superior chloride resistance.

Note: These grades complement sa 240/a 240 uns s31277 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 S31277 and ASME SA240 UNS N08367?

A: ASTM A240/ASME SA240 UNS S31277 offers higher strength and comparable chloride resistance, while sa 240/a 240 uns n08367 may provide slightly better pitting resistance in severe conditions.

Q: Is ASTM A240/ASME SA240 UNS S31277 suitable for marine applications?

A: Yes, its high molybdenum and nitrogen content ensure exceptional resistance to chloride corrosion, making it ideal for seawater piping compared to sa 240/a 240 uns n08800.

Q: How does the price of ASTM A240/ASME SA240 UNS S31277 compare to ASME SA240 UNS N08926?

A: ASTM A240/ASME SA240 UNS S31277 is typically 10-20% more expensive than sa 240/a 240 uns n08926 due to its higher alloy content, offering enhanced strength and corrosion resistance for demanding applications.

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Contact Us

 

For sa 240/a 240 uns s31277 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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