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For applications requiring excellent high-temperature corrosion resistance, enhanced creep strength, and good weldability, ASME SA240/ASTM A240 UNS S30941 Stainless Steel Sheet (commonly known as 309HCb) is an optimal choice.
As a leading uns stainless supplier, Gangsteel specializes in providing high-quality sa 240/a 240 uns s30941 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.
Gangsteel explores the ASME SA240/ASTM A240 UNS S30941 chemical composition, density, mechanical properties, corrosion resistance, weldability, stainless steel surface finishes, equivalent materials, specifications, applications, and competitive ASME SA240/ASTM A240 UNS S30941 price per kg.
Whether you're an engineer designing high-temperature furnace components or a procurement specialist sourcing for petrochemical applications, this article will clarify why 309HCb stainless steel (UNS S30941) 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 s31266, 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 S30941, known as 309HCb, is a high-carbon, niobium-stabilized austenitic stainless steel with 22.0-24.0% chromium, 12.0-15.0% nickel, and niobium stabilization (10xC min, 1.10% max). It is designed for high-temperature applications requiring excellent corrosion resistance, enhanced creep strength, and good weldability, making it ideal for industries such as petrochemical, power generation, and furnace manufacturing. The high carbon content (0.04-0.10%) provides superior creep strength compared to sa 240/a 240 uns s30940, while niobium stabilization prevents carbide precipitation during welding, improving weldability over sa 240/a 240 uns s30909.
The ASME SA240/ASTM A240 UNS S30941 stainless steel sheet offers enhanced high-temperature strength compared to sa 240/a 240 uns s30940 and better weldability than sa 240/a 240 uns s30909 due to niobium stabilization. While it is less corrosion-resistant in chloride-rich environments than grades like sa 240/a 240 uns s31254, its combination of creep strength, corrosion resistance, and weldability makes it a preferred choice for high-temperature furnace and petrochemical applications.
Key benefits of ASME SA240/ASTM A240 UNS S30941 stainless steel sheet include:
Case Study: A petrochemical plant in India used sa 240/a 240 uns s30941 sheets for furnace linings, achieving a 20% longer service life compared to sa 240/a 240 uns s30940 due to its enhanced creep strength and weldability.
Keywords: ASME SA240/ASTM A240 UNS S30941 stainless steel sheet, UNS S30941 sheet, 309HCb stainless steel, high-temperature stainless steel sheet
The density of ASME SA240/ASTM A240 UNS S30941 stainless steel sheet is approximately 7.89 g/cm³ (0.285 lb/in³). This density is typical for high-chromium and high-nickel austenitic stainless steels, reflecting the material's composition. The consistent density ensures predictable performance in applications requiring precise weight calculations, such as furnace components and heat exchangers. Compared to grades like sa 240/a 240 uns s31040 (7.89 g/cm³) and sa 240/a 240 uns s31635 (8.00 g/cm³), the density is similar, making UNS S30941 a reliable choice for weight-sensitive high-temperature applications.
Keywords: ASME SA240/ASTM A240 UNS S30941 density, UNS S30941 density, 309HCb density
ASME SA240/ASTM A240 UNS S30941offers excellent corrosion resistance in high-temperature environments, such as petrochemical and power generation settings. Its 22.0-24.0% chromium and 12.0-15.0% nickel content provide a robust protective oxide layer, with a pitting resistance equivalent number (PREN) of ~22-24, suitable for applications like furnace linings and heat exchanger tubes. It outperforms sa 240/a 240 uns s31635 in high-temperature corrosion resistance due to its higher chromium and nickel content but is less resistant in chloride-rich environments compared to sa 240/a 240 uns s31254 or sa 240/a 240 uns s31266.
Keywords: ASME SA240/ASTM A240 UNS S30941 corrosion resistance, UNS S30941 corrosion properties, 309HCb corrosion resistance
The niobium stabilization in ASME SA240/ASTM A240 UNS S30941 ensures superior weldability by preventing carbide precipitation and intergranular corrosion during welding, making it more weldable than sa 240/a 240 uns s30909. It can be welded using common techniques such as TIG, MIG, and shielded metal arc welding, with niobium-containing filler materials to maintain corrosion resistance and creep strength. Compared to sa 240/a 240 uns s31041, UNS S30941 offers similar weldability but is more cost-effective for high-temperature applications. For applications requiring enhanced corrosion resistance and weldability, sa 240/a 240 uns s31050 is a viable alternative.
Keywords: ASME SA240/ASTM A240 UNS S30941 weldability, UNS S30941 welding properties, 309HCb weldability
The surface finish of ASME SA240/ASTM A240 UNS S30941 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 s30941 to be tailored for aesthetic or functional requirements, such as the NO.1 finish for furnace components or the 2B finish for petrochemical applications.
Keywords: ASME SA240/ASTM A240 UNS S30941 surface finish, UNS S30941 stainless steel surface, 309HCb surface finishes
The ASME SA240/ASTM A240 UNS S30941 chemical composition is optimized for high-temperature corrosion resistance, creep strength, and weldability, compliant with sa 240/a 240 uns stainless grades standards.
The high chromium (22.0-24.0%), nickel (12.0-15.0%), niobium stabilization, and high carbon content (0.04-0.10%) provide excellent creep strength and weldability compared to sa 240/a 240 uns s30940.
|
Element |
Percentage (%) |
|---|---|
|
Chromium (Cr) |
22.0 – 24.0 |
|
Nickel (Ni) |
12.0 – 15.0 |
|
Niobium (Nb) |
10xC – 1.10 |
|
Carbon (C) |
0.04 – 0.10 |
|
Manganese (Mn) |
≤ 2.0 |
|
Silicon (Si) |
≤ 0.75 |
|
Phosphorus (P) |
≤ 0.045 |
|
Sulfur (S) |
≤ 0.030 |
|
Iron (Fe) |
Balance (~60%) |
Keywords: ASME SA240/ASTM A240 UNS S30941 chemical composition, UNS S30941 composition, 309HCb chemistry, ASME SA240 Gr S30941 composition
The ASME SA240/ASTM A240 UNS S30941 mechanical properties offer a balance of high creep strength, good ductility, and excellent high-temperature corrosion resistance, suitable for high-temperature applications.
These properties ensure that ASME SA240/ASTM A240 UNS S30941 stainless steel sheet can withstand mechanical stresses in high-temperature environments. Solution annealing at 1040-1100°C (1904-2012°F) optimizes UNS S30941 mechanical properties for corrosion resistance and creep strength.
|
Property |
Value at 20°C |
|---|---|
|
Tensile Strength (MPa) |
≥ 515 (75 ksi) |
|
Yield Strength (MPa) |
≥ 205 (30 ksi) |
|
Elongation (%) |
≥ 40 |
|
Hardness (HBW) |
≤ 217 |
|
Density |
7.89 g/cm³ (0.285 lb/in³) |
At Gangsteel, we’ve seen clients use sa 240/a 240 uns s30941 sheets in high-temperature furnace linings, where its creep strength and weldability provide advantages over sa 240/a 240 uns s30940.
Keywords: ASME SA240/ASTM A240 UNS S30941 mechanical properties, UNS S30941 strength, 309HCb mechanical properties, ASME SA240 Gr S30941 mechanical properties
As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s30941 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 S30941 material specifications.
Keywords: ASME SA240/ASTM A240 UNS S30941 stainless steel sheet specifications, UNS S30941 sheet specifications, ASME SA 240 Gr S30941 coil, ASME SA 240 Gr S30941 bar
ASME SA240/ASTM A240 UNS S30941 stainless steel sheetis tailored for industries requiring excellent high-temperature corrosion resistance, enhanced creep strength, and good weldability. Its high-carbon, niobium-stabilized austenitic structure ensures durability in demanding high-temperature environments.
Key ASME SA240/ASTM A240 UNS S30941 applications include:
Case Study: A power generation facility in India used sa 240/a 240 uns s30941 sheets for boiler components, achieving a 15% increase in service life compared to sa 240/a 240 uns s30909 due to its enhanced creep strength and weldability.
Keywords: ASME SA240/ASTM A240 UNS S30941 applications, UNS S30941 uses, 309HCb applications, ASME SA240 Gr S30941 applications
To aid in material selection, here’s a comparison of sa 240/a 240 uns s30941 with six related grades: 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 s31060, and sa 240/a 240 uns s31635. This comparison is limited to seven grades to ensure display compatibility, focusing on grades relevant to high-temperature and weldable applications.
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 S30941 |
ASME SA240 UNS S30909 |
ASME SA240 UNS S30940 |
ASME SA240 UNS S31040 |
ASME SA240 UNS S31041 |
ASME SA240 UNS S31060 |
ASME SA240 UNS S31635 |
|---|---|---|---|---|---|---|---|
|
UNS Number |
S30941 |
S30909 |
S30940 |
S31040 |
S31041 |
S31060 |
S31635 |
|
Type |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
|
Chromium Content |
22.0-24.0% |
22.0-24.0% |
22.0-24.0% |
24.0-26.0% |
24.0-26.0% |
24.0-26.0% |
16.0-18.0% |
|
Nickel Content |
12.0-15.0% |
12.0-15.0% |
12.0-15.0% |
19.0-22.0% |
19.0-22.0% |
19.0-22.0% |
10.0-14.0% |
|
Manganese Content |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
|
Molybdenum Content |
- |
- |
- |
- |
- |
- |
2.0-3.0% |
|
Nitrogen Content |
- |
- |
- |
- |
- |
- |
- |
|
Carbon Content |
0.04-0.10% |
0.04-0.10% |
≤ 0.08% |
≤ 0.08% |
0.04-0.10% |
≤ 0.08% |
≤ 0.08% |
|
Corrosion Resistance |
Good in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Good in high-temperature environments |
Good in chloride environments |
|
Strength |
High (Creep resistance) |
High (High-temperature) |
Moderate |
Moderate |
High (Creep resistance) |
Moderate |
Moderate |
|
Temp Range |
Up to 1000°C (1832°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 870°C (1598°F) |
|
Cost (USD/kg) |
5-8 |
5-8 |
5-8 |
6-9 |
6-9 |
6-9 |
5-8 |
|
Applications |
High-temperature welded structures, furnace components |
Heat exchangers, furnace components |
High-temperature welded structures |
High-temperature welded structures |
High-temperature equipment |
High-temperature equipment |
Chemical, pharmaceutical |
Conclusion: Choose sa 240/a 240 uns s30941 for high-temperature applications requiring creep strength and weldability, sa 240/a 240 uns s30909 for high-temperature strength without stabilization, sa 240/a 240 uns s30940 for cost-effective high-temperature weldability, sa 240/a 240 uns s31040 or sa 240/a 240 uns s31060 for enhanced high-temperature corrosion resistance, sa 240/a 240 uns s31041 for superior creep resistance, or sa 240/a 240 uns s31635 for chloride-rich environments.
Keywords: ASME SA240/ASTM A240 UNS S30941 vs ASME SA240 UNS S30909, ASME SA240/ASTM A240 UNS S30941 vs ASME SA240 UNS S30940, ASME SA240/ASTM A240 UNS S30941 vs ASME SA240 UNS S31040, ASME SA240/ASTM A240 UNS S30941 vs ASME SA240 UNS S31041, ASME SA240/ASTM A240 UNS S30941 vs ASME SA240 UNS S31060, ASME SA240/ASTM A240 UNS S30941 vs ASME SA240 UNS S31635, 309HCb comparison
ASME SA240/ASTM A240 UNS S30941aligns 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 S30941 a versatile choice for high-temperature applications.
|
Standard |
Grade |
|---|---|
|
UNS |
S30941 |
|
W.Nr. |
1.4835 |
|
EN |
X9CrNiSiNCe21-11-2 |
|
ASTM |
A240 |
|
ASME |
SA240 |
Note: ASME SA240/ASTM A240 UNS S30941 equivalent grades comply with sa 240/a 240 uns stainless grades standards, offering interchangeability with sa 240/a 240 uns s30940 for similar applications.
Keywords: ASME SA240/ASTM A240 UNS S30941 equivalent, UNS S30941 equivalent, ASME SA 240 Gr S30941 material standards, EN X9CrNiSiNCe21-11-2
The allowable stress values for ASME SA240/ASTM A240 UNS S30941, per ASME BPVC Section II, Part D, ensure reliable performance in high-temperature environments.
These values reflect the material’s ability to withstand mechanical stresses at elevated temperatures while maintaining corrosion resistance and creep strength.
|
Temperature (°C) |
Allowable Stress (MPa) |
|---|---|
|
100 |
130 |
|
200 |
120 |
|
300 |
110 |
|
400 |
100 |
|
500 |
90 |
Note: These values ensure sa 240/a 240 uns s30941 performs reliably in petrochemical and furnace applications.
Keywords: ASME SA240/ASTM A240 UNS S30941 allowable stress, UNS S30941 strength, ASME SA240 Gr S30941 material stress
The ASME SA240/ASTM A240 UNS S30941 price per kg ranges from USD 5-8 per kg (FOB), influenced by several factors:
The excellent high-temperature corrosion resistance, creep strength, and weldability of ASME SA240/ASTM A240 UNS S30941 make it a valuable choice for petrochemical and furnace applications.
For a precise ASME SA240/ASTM A240 UNS S30941 price per kg or bulk discounts, contact Gangsteel at admin@gangsteel.com.
Keywords: ASME SA240/ASTM A240 UNS S30941 price per kg, UNS S30941 cost, 309HCb 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 s30941 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 s30941 in high-temperature and corrosion-resistant applications. Contact Gangsteel for a full catalog to find the perfect material for your project.
Keywords: ASME SA240/ASTM A240 UNS S30941 related grades, UNS S30941 stainless steel grades, 309HCb grades
Q: What is the main difference between ASME SA240/ASTM A240 UNS S30941 and ASME SA240 UNS S30940?
A: ASME SA240/ASTM A240 UNS S30941 offers enhanced creep strength due to higher carbon content (0.04-0.10%), while sa 240/a 240 uns s30940 provides lower creep resistance but is more cost-effective.
Q: Is ASME SA240/ASTM A240 UNS S30941 suitable for furnace applications?
A: Yes, its excellent high-temperature corrosion resistance and enhanced creep strength make it ideal for furnace linings compared to sa 240/a 240 uns s30909.
Q: How does the price of ASME SA240/ASTM A240 UNS S30941 compare to ASME SA240 UNS S31041?
A: ASME SA240/ASTM A240 UNS S30941 is typically 20-30% less expensive than sa 240/a 240 uns s31041 due to lower nickel content, offering cost-effective performance for high-temperature applications.
Keywords: ASME SA240/ASTM A240 UNS S30941 FAQ, UNS S30941 stainless steel questions, 309HCb FAQ
For sa 240/a 240 uns s30941 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.
Keywords: ASME SA240/ASTM A240 UNS S30941 supplier, Gangsteel stainless steel exporter, UNS S30941 sheet supplier
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