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For applications requiring unparalleled corrosion resistance in severe corrosive environments, exceptional strength, and superior weldability, ASME SA240/ASTM A240 UNS S31266 Stainless Steel Sheet is the ultimate choice.
As a leading uns stainless supplier, Gangsteel specializes in providing high-quality sa 240/a 240 uns s31266 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 manufacturing capabilities, Gangsteel ensures rapid delivery and tailored solutions for clients worldwide.
This comprehensive guide explores the ASME SA240/ASTM A240 UNS S31266 chemical composition, density, mechanical properties, corrosion resistance, weldability, stainless steel surface finishes, equivalent materials, specifications, applications, and competitive ASME SA240/ASTM A240 UNS S31266 price per kg. Whether you're an engineer designing equipment for extreme marine or chemical environments or a procurement specialist sourcing for critical applications, this article will clarify why UNS S31266 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 s30615, sa 240/a 240 uns s30815, sa 240/a 240 uns s30909, sa 240/a 240 uns s30940, sa 240/a 240 uns s31040, sa 240/a 240 uns s31041, sa 240/a 240 uns s31050, sa 240/a 240 uns s31060, sa 240/a 240 uns s31254, sa 240/a 240 uns s31635, sa 240/a 240 uns s31640, sa 240/a 240 uns s31651, and sa 240/a 240 uns s31653.
ASME SA240/ASTM A240 UNS S31266is a super-austenitic stainless steel with 23.0-25.0% chromium, 21.0-24.0% nickel, 5.2-6.2% molybdenum, 0.35-0.60% nitrogen, and additions of tungsten and copper. It is engineered for applications requiring unparalleled corrosion resistance in severe corrosive environments, exceptional strength, and superior weldability, making it ideal for industries such as marine, oil and gas, and chemical processing. The high molybdenum, nitrogen, and tungsten content provide outstanding pitting and crevice corrosion resistance, while the ultra-low carbon content (≤ 0.020%) ensures excellent weldability compared to sa 240/a 240 uns s31254.
The ASME SA240/ASTM A240 UNS S31266 stainless steel sheet offers superior corrosion resistance and strength compared to sa 240/a 240 uns s31254 and significantly outperforms sa 240/a 240 uns s31050 in aggressive environments due to its higher alloy content. Its exceptional properties make it the top choice for critical applications in extreme conditions, such as deep-sea equipment and chemical reactors.
Key benefits of ASME SA240/ASTM A240 UNS S31266 stainless steel sheet include:
Case Study: An oil and gas company in India used sa 240/a 240 uns s31266 sheets for deep-sea piping, achieving a 50% longer service life compared to sa 240/a 240 uns s31254 due to its superior corrosion resistance and strength.
Keywords: ASME SA240/ASTM A240 UNS S31266 stainless steel sheet, UNS S31266 sheet, super-austenitic stainless steel, corrosion-resistant stainless steel sheet
The density of ASME SA240/ASTM A240 UNS S31266 stainless steel sheet is approximately 8.00 g/cm³ (0.289 lb/in³). This density is consistent with high-alloy austenitic stainless steels, reflecting its composition, which includes significant molybdenum, nitrogen, and tungsten. The consistent density ensures predictable performance in applications requiring precise weight calculations, such as deep-sea equipment and chemical reactors. Compared to grades like sa 240/a 240 uns s31254 (8.00 g/cm³) and sa 240/a 240 uns s31050 (7.89 g/cm³), the density is similar, making UNS S31266 a reliable choice for corrosion-resistant applications.
Keywords: ASME SA240/ASTM A240 UNS S31266 density, UNS S31266 density, super-austenitic stainless steel density
ASME SA240/ASTM A240 UNS S31266offers unparalleled corrosion resistance in severe corrosive environments, such as deep-sea marine and aggressive chemical processing settings. Its 23.0-25.0% chromium, 21.0-24.0% nickel, 5.2-6.2% molybdenum, 0.35-0.60% nitrogen, and 1.5-2.5% tungsten content provide an exceptionally robust protective oxide layer and outstanding pitting resistance, with a pitting resistance equivalent number (PREN) of ~46-50. This makes it ideal for applications like deep-sea piping and chemical reactors, outperforming sa 240/a 240 uns s31254 and sa 240/a 240 uns s31050 in extreme conditions. It is the top choice for the most demanding corrosive environments.
Keywords: ASME SA240/ASTM A240 UNS S31266 corrosion resistance, UNS S31266 corrosion properties, super-austenitic stainless steel corrosion resistance
The ultra-low carbon content (≤ 0.020%) of ASME SA240/ASTM A240 UNS S31266 ensures superior weldability by minimizing carbide precipitation and intergranular corrosion during welding, making it more weldable than sa 240/a 240 uns s31041 and sa 240/a 240 uns s30909. It can be welded using common techniques such as TIG, MIG, and shielded metal arc welding, with high-molybdenum and high-nitrogen filler materials to maintain corrosion resistance and strength. Compared to sa 240/a 240 uns s31254, UNS S31266 offers comparable weldability but superior corrosion resistance due to higher alloy content. It is ideal for welded structures in extreme environments.
Keywords: ASME SA240/ASTM A240 UNS S31266 weldability, UNS S31266 welding properties, super-austenitic stainless steel weldability
The surface finish of ASME SA240/ASTM A240 UNS S31266 stainless steel sheet 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 s31266 to be tailored for aesthetic or functional requirements, such as the 2B finish for chemical reactors or the NO.4 finish for marine equipment.
Keywords: ASME SA240/ASTM A240 UNS S31266 surface finish, UNS S31266 stainless steel surface, super-austenitic stainless steel surface finishes
The ASME SA240/ASTM A240 UNS S31266 chemical composition is optimized for unparalleled corrosion resistance and strength, compliant with sa 240/a 240 uns stainless grades standards.
The high chromium (23.0-25.0%), nickel (21.0-24.0%), molybdenum (5.2-6.2%), nitrogen (0.35-0.60%), and tungsten (1.5-2.5%) content, combined with ultra-low carbon (≤ 0.020%), provide superior corrosion resistance compared to sa 240/a 240 uns s31254.
|
Element |
Percentage (%) |
|---|---|
|
Chromium (Cr) |
23.0 – 25.0 |
|
Nickel (Ni) |
21.0 – 24.0 |
|
Molybdenum (Mo) |
5.2 – 6.2 |
|
Nitrogen (N) |
0.35 – 0.60 |
|
Tungsten (W) |
1.5 – 2.5 |
|
Carbon (C) |
≤ 0.020 |
|
Manganese (Mn) |
≤ 2.0 |
|
Silicon (Si) |
≤ 0.50 |
|
Phosphorus (P) |
≤ 0.035 |
|
Sulfur (S) |
≤ 0.005 |
|
Copper (Cu) |
0.3 – 0.8 |
|
Iron (Fe) |
Balance (~50%) |
Keywords: ASME SA240/ASTM A240 UNS S31266 chemical composition, UNS S31266 composition, super-austenitic stainless steel chemistry, ASME SA240 Gr S31266 composition
The ASME SA240/ASTM A240 UNS S31266 mechanical properties offer a balance of exceptional strength, unparalleled corrosion resistance, and superior weldability, suitable for severe corrosive environments.
These properties ensure that ASME SA240/ASTM A240 UNS S31266 stainless steel sheet can withstand significant mechanical stresses in extreme conditions. Solution annealing at 1150-1200°C (2102-2192°F) optimizes UNS S31266 mechanical properties for corrosion resistance and strength.
|
Property |
Value at 20°C |
|---|---|
|
Tensile Strength (MPa) |
≥ 700 (102 ksi) |
|
Yield Strength (MPa) |
≥ 350 (51 ksi) |
|
Elongation (%) |
≥ 35 |
|
Hardness (HBW) |
≤ 250 |
|
Density |
8.00 g/cm³ (0.289 lb/in³) |
At Gangsteel, we’ve seen clients use sa 240/a 240 uns s31266 sheets in deep-sea equipment, where its corrosion resistance and strength provide significant advantages over sa 240/a 240 uns s31254.
Keywords: ASME SA240/ASTM A240 UNS S31266 mechanical properties, UNS S31266 strength, super-austenitic stainless steel mechanical properties, ASME SA240 Gr S31266 mechanical properties
As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s31266 sheets, plates, 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.
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 ASME SA240/ASTM A240 UNS S31266 material specifications.
Keywords: ASME SA240/ASTM A240 UNS S31266 stainless steel sheet specifications, UNS S31266 sheet specifications, ASME SA 240 Gr S31266 coil, ASME SA 240 Gr S31266 bar
ASME SA240/ASTM A240 UNS S31266 stainless steel sheetis tailored for industries requiring unparalleled corrosion resistance and exceptional strength in severe environments. Its super-austenitic structure ensures durability in critical applications.
Key ASME SA240/ASTM A240 UNS S31266 applications include:
Case Study: A chemical processing plant in India used sa 240/a 240 uns s31266 sheets for reactor linings, achieving a 45% longer service life compared to sa 240/a 240 uns s31254 due to its superior corrosion resistance.
Keywords: ASME SA240/ASTM A240 UNS S31266 applications, UNS S31266 uses, super-austenitic stainless steel applications, ASME SA240 Gr S31266 applications
To aid in material selection, here’s a comparison of sa 240/a 240 uns s31266 with sa 240/a 240 uns s30615, sa 240/a 240 uns s30815, sa 240/a 240 uns s30909, sa 240/a 240 uns s30940, sa 240/a 240 uns s31040, sa 240/a 240 uns s31041, sa 240/a 240 uns s31050, sa 240/a 240 uns s31060, sa 240/a 240 uns s31254, sa 240/a 240 uns s31635, sa 240/a 240 uns s31640, sa 240/a 240 uns s31651, and sa 240/a 240 uns s31653:
This comparison highlights the unique advantages of each grade, helping you select the optimal material for your project requirements.
|
Property |
ASME SA240/ASTM A240 UNS S31266 |
ASME SA240 UNS S30615 |
ASME SA240 UNS S30815 |
ASME SA240 UNS S30909 |
ASME SA240 UNS S30940 |
ASME SA240 UNS S31040 |
ASME SA240 UNS S31041 |
ASME SA240 UNS S31050 |
ASME SA240 UNS S31060 |
ASME SA240 UNS S31254 |
ASME SA240 UNS S31635 |
ASME SA240 UNS S31640 |
ASME SA240 UNS S31651 |
ASME SA240 UNS S31653 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
UNS Number |
S31266 |
S30615 |
S30815 |
S30909 |
S30940 |
S31040 |
S31041 |
S31050 |
S31060 |
S31254 |
S31635 |
S31640 |
S31651 |
S31653 |
|
Type |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
|
Chromium Content |
23.0-25.0% |
18.0-19.5% |
20.0-22.0% |
22.0-24.0% |
22.0-24.0% |
24.0-26.0% |
24.0-26.0% |
24.0-26.0% |
24.0-26.0% |
19.5-20.5% |
16.0-18.0% |
16.0-18.0% |
16.0-18.0% |
16.0-18.0% |
|
Nickel Content |
21.0-24.0% |
13.5-15.0% |
10.0-12.0% |
12.0-15.0% |
12.0-15.0% |
19.0-22.0% |
19.0-22.0% |
21.0-23.0% |
19.0-22.0% |
17.5-18.5% |
10.0-14.0% |
10.0-14.0% |
10.0-14.0% |
10.0-14.0% |
|
Manganese Content |
≤ 2.0 |
≤ 2.0 |
≤ 0.80 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 1.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
|
Molybdenum Content |
5.2-6.2% |
0.80-1.20% |
- |
- |
- |
- |
- |
2.0-3.0% |
- |
6.0-6.5% |
2.0-3.0% |
2.0-3.0% |
2.0-3.0% |
2.0-3.0% |
|
Nitrogen Content |
0.35-0.60% |
0.15-0.25% |
0.14-0.20% |
- |
- |
- |
- |
0.10-0.16% |
- |
0.18-0.22% |
- |
- |
0.10-0.16% |
0.10-0.16% |
|
Carbon Content |
≤ 0.020% |
≤ 0.05% |
0.05-0.10% |
0.04-0.10% |
≤ 0.08% |
≤ 0.08% |
0.04-0.10% |
≤ 0.030% |
≤ 0.08% |
≤ 0.020% |
≤ 0.08% |
≤ 0.08% |
≤ 0.08% |
≤ 0.030% |
|
Corrosion Resistance |
Exceptional in severe corrosive environments |
Excellent in high-temperature environments |
Excellent in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Excellent in chemical environments |
Good in high-temperature environments |
Exceptional in chloride environments |
Good in chloride environments |
Good in chloride environments |
Good in chloride environments |
Good in chloride environments |
|
Strength |
Very High (Corrosion resistance) |
High (High-temperature) |
High (High-temperature) |
High (High-temperature) |
Moderate |
Moderate |
High (High-temperature) |
High (Chemical resistance) |
Moderate |
High (Corrosion resistance) |
Moderate |
Moderate |
High (Nitrogen-enhanced) |
Moderate |
|
Temp Range |
Up to 400°C (752°F) |
Up to 950°C (1742°F) |
Up to 1150°C (2102°F) |
Up to 1000°C (1832°F) |
Up to 1000°C (1832°F) |
Up to 1100°C (2012°F) |
Up to 1100°C (2012°F) |
Up to 1100°C (2012°F) |
Up to 1100°C (2012°F) |
Up to 400°C (752°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) |
9-14 |
6-9 |
6-9 |
5-8 |
5-8 |
6-9 |
6-9 |
7-10 |
6-9 |
8-12 |
5-8 |
5-8 |
5-8 |
5-8 |
|
Applications |
Severe corrosive environments, marine |
High-temperature equipment, chemical processing |
Furnace components, petrochemical |
Heat exchangers, furnace components |
High-temperature welded structures |
High-temperature welded structures |
High-temperature equipment |
Chemical processing, high-temperature |
High-temperature equipment |
Marine, chemical processing |
Chemical, pharmaceutical |
Chemical, pharmaceutical |
Chemical, structural |
Chemical, pharmaceutical |
Conclusion: Choose sa 240/a 240 uns s31266 for unparalleled corrosion resistance in severe environments, sa 240/a 240 uns s30615 or sa 240/a 240 uns s30815 for high-temperature oxidation resistance, sa 240/a 240 uns s30909 or sa 240/a 240 uns s31041 for high-temperature strength, sa 240/a 240 uns s30940 or sa 240/a 240 uns s31040 for weldable high-temperature structures, sa 240/a 240 uns s31050 or sa 240/a 240 uns s31254 for chemical and chloride-rich environments, sa 240/a 240 uns s31060 for general high-temperature applications, or sa 240/a 240 uns s31635, sa 240/a 240 uns s31640, sa 240/a 240 uns s31651, or sa 240/a 240 uns s31653 for cost-effective corrosion-resistant applications.
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ASME SA240/ASTM A240 UNS S31266aligns 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 ASME SA240/ASTM A240 UNS S31266 a versatile choice for corrosion-resistant applications.
|
Standard |
Grade |
|---|---|
|
UNS |
S31266 |
|
W.Nr. |
1.4465 |
|
EN |
X1CrNiMoCuNW24-22-6 |
|
ASTM |
A240 |
|
ASME |
SA240 |
Note: ASME SA240/ASTM A240 UNS S31266 equivalent grades comply with sa 240/a 240 uns stainless grades standards, offering interchangeability with sa 240/a 240 uns s31254 for similar corrosion-resistant applications.
Keywords: ASME SA240/ASTM A240 UNS S31266 equivalent, UNS S31266 equivalent, ASME SA 240 Gr S31266 material standards, EN X1CrNiMoCuNW24-22-6
The allowable stress values for ASME SA240/ASTM A240 UNS S31266, per ASME BPVC Section II, Part D, ensure reliable performance in severe corrosive environments.
These values reflect the material’s ability to withstand mechanical stresses while maintaining corrosion resistance.
|
Temperature (°C) |
Allowable Stress (MPa) |
|---|---|
|
100 |
190 |
|
200 |
175 |
|
300 |
160 |
|
400 |
150 |
Note: These values ensure sa 240/a 240 uns s31266 performs reliably in marine and chemical processing applications.
Keywords: ASME SA240/ASTM A240 UNS S31266 allowable stress, UNS S31266 strength, ASME SA240 Gr S31266 material stress
The ASME SA240/ASTM A240 UNS S31266 price per kg ranges from USD 9-14 per kg (FOB), influenced by several factors:
The unparalleled corrosion resistance and strength of ASME SA240/ASTM A240 UNS S31266 make it a valuable choice for marine and chemical processing applications.
For a precise ASME SA240/ASTM A240 UNS S31266 price per kg or bulk discounts, contact Gangsteel at admin@gangsteel.com.
Keywords: ASME SA240/ASTM A240 UNS S31266 price per kg, UNS S31266 cost, super-austenitic stainless steel 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 s31266 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 s31266 in corrosion-resistant and high-temperature applications. Contact Gangsteel for a full catalog to find the perfect material for your project.
Keywords: ASME SA240/ASTM A240 UNS S31266 related grades, UNS S31266 stainless steel grades, super-austenitic stainless steel grades
Q: What is the main difference between ASME SA240/ASTM A240 UNS S31266 and ASME SA240 UNS S31254?
A: ASME SA240/ASTM A240 UNS S31266 offers superior corrosion resistance and strength due to higher molybdenum (5.2-6.2%), nitrogen (0.35-0.60%), and tungsten content, while sa 240/a 240 uns s31254 is more cost-effective for chloride-rich environments.
Q: Is ASME SA240/ASTM A240 UNS S31266 suitable for deep-sea applications?
A: Yes, its unparalleled corrosion resistance and strength make it ideal for deep-sea piping compared to sa 240/a 240 uns s31254.
Q: How does the price of ASME SA240/ASTM A240 UNS S31266 compare to ASME SA240 UNS S31254?
A: ASME SA240/ASTM A240 UNS S31266 is typically 10-20% more expensive than sa 240/a 240 uns s31254 due to its higher alloy content, offering superior performance for severe corrosive environments.
Keywords: ASME SA240/ASTM A240 UNS S31266 FAQ, UNS S31266 stainless steel questions, super-austenitic stainless steel FAQ
For sa 240/a 240 uns s31266 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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