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Gangsteel introduces sa240/a240 uns s44700, a super-ferritic stainless steel sheet designed for exceptional corrosion resistance in the most demanding environments. Compliant with sa240/a240 uns stainless grades standards, including ASTM A240 and ASME SA240, UNS S44700 is ideal for applications such as seawater desalination, chemical processing, and power generation. As a leading uns stainless supplier, Gangsteel maintains an inventory exceeding 600 tons and leverages advanced manufacturing to deliver precise, tailored solutions globally with rapid delivery.
Gangsteel provides a comprehensive overview of ASME SA240/ASTM A240 UNS S44700, detailing its chemical composition, density, mechanical properties, corrosion resistance, weldability, surface finishes, equivalent materials, specifications, applications, and pricing per kg. Perfect for engineers and procurement specialists, UNS S44700 offers a robust solution for extreme corrosive environments. Explore related grades like sa240/a240 uns s41003 to meet diverse project needs.
ASME SA240/ASTM A240 UNS S44700, a super-ferritic stainless steel, features 28.0-30.0% chromium, 3.5-4.2% molybdenum, and low carbon content (≤ 0.010%), delivering unparalleled corrosion resistance, good weldability, and moderate strength. Designed for extreme corrosive environments like seawater desalination and chemical processing, it outperforms non-stabilized grades like sa240/a240 uns s43000 due to its low carbon and nitrogen content, which minimizes carbide precipitation during welding. Its ferritic structure ensures excellent scaling resistance up to 1050°C (1922°F).
Gangsteel highlights that UNS S44700 offers superior corrosion resistance compared to sa240/a240 uns s41008 due to its high chromium and molybdenum content, and it is competitive with other super-ferritic grades like sa240/a240 uns s44800. Its exceptional corrosion resistance makes it ideal for severe applications.
Key benefits include:
Case Study: A Middle Eastern desalination plant used UNS S44700 sheets for evaporator tubing, achieving a 10% cost reduction compared to sa240/a240 uns s44735 while maintaining superior corrosion resistance.
Keywords: ASME SA240/ASTM A240 UNS S44700 stainless steel sheet, UNS S44700 sheet, corrosion-resistant stainless steel sheet
Gangsteel confirms that the density of ASME SA240/ASTM A240 UNS S44700 is approximately 7.70 g/cm³ (0.278 lb/in³), typical for ferritic stainless steels with high chromium content, aligning with sa240/a240 uns s41003 (7.70 g/cm³) and slightly less than sa240/a240 uns s42035 (7.75 g/cm³). This density supports precise weight calculations for desalination equipment.
Keywords: ASME SA240/ASTM A240 UNS S44700 density, UNS S44700 density
Gangsteel emphasizes that ASME SA240/ASTM A240 UNS S44700 offers unparalleled corrosion resistance in extreme environments due to its 28.0-30.0% chromium and 3.5-4.2% molybdenum content, with a pitting resistance equivalent number (PREN) of ~37.0-41.5. Ideal for seawater desalination and chemical processing, it outperforms sa240/a240 uns s41008 and sa240/a240 uns s44400 in chloride-rich environments. Its high-temperature oxidation resistance is superior to sa240/a240 uns s43000.
Keywords: ASME SA240/ASTM A240 UNS S44700 corrosion resistance, UNS S44700 corrosion properties
Gangsteel notes that the low carbon content (≤ 0.010%) and low nitrogen content (≤ 0.020%) in ASME SA240/ASTM A240 UNS S44700 ensure good weldability, minimizing carbide precipitation. It outperforms martensitic grades like sa240/a240 uns s41500 and is comparable to stabilized grades like sa240/a240 uns s43035. Suitable for TIG, MIG, and shielded metal arc welding, it uses low-carbon ferritic or austenitic fillers.
Keywords: ASME SA240/ASTM A240 UNS S44700 weldability, UNS S44700 welding properties
Gangsteel offers a range of surface finishes for ASME SA240/ASTM A240 UNS S44700 to enhance its versatility:
|
Surface Finish |
Definition/Feature |
Summary of Manufacturing Method |
Application/Use |
|---|---|---|---|
|
NO.1 |
Silver white, matte |
Hot rolled, heat treated, and pickled |
Industrial tanks, pipes |
|
2B |
Stronger gloss than NO.2D |
Cold rolled, heat treated, pickled, lightly polished |
Desalination equipment, chemical processing |
|
NO.2D/2BB |
Silver white |
Cold rolled, heat treated, pickled |
Deep-drawn components |
|
NO.3 |
Rough grinding |
Polished with 100-120# abrasives (JIS R6001) |
Industrial components |
|
NO.4 (4K) |
Intermediate grinding |
Polished with 150-180# abrasives (JIS R6001) |
Architectural panels |
|
NO.240 |
Fine grinding |
Ground with 240# abrasive belt |
Precision components |
|
NO.320 |
Very fine grinding |
Ground with 320# abrasive belt |
High-end industrial components |
|
NO.400 |
Gloss close to BA |
Polished with 400# wheel |
Industrial fittings |
|
HL |
Hairline, continuous streaks |
Polished with 150-240# abrasive |
Structural components |
|
BA (No.6/BA1/BA0) |
Mirror-like, bright |
Cold rolled with bright heat treatment |
Decorative surfaces |
|
NO.7 |
Near-mirror polishing |
Polished with 600# rotary wheel |
Specialized industrial applications |
|
NO.8 (Mirror/8K) |
Shining mirror finish |
Polished with fine wheels |
Reflectors, high-end components |
These finishes make sa240/a240 uns s44700 suitable for applications like 2B for desalination equipment or NO.4 for panels.
Keywords: ASME SA240/ASTM A240 UNS S44700 surface finish, UNS S44700 stainless steel surface
Gangsteel ensures that the ASME SA240/ASTM A240 UNS S44700 chemical composition is optimized for corrosion resistance and weldability, compliant with sa240/a240 uns stainless grades.
|
Element |
Percentage (%) |
|---|---|
|
Chromium (Cr) |
28.0 – 30.0 |
|
Molybdenum (Mo) |
3.5 – 4.2 |
|
Carbon (C) |
≤ 0.010 |
|
Manganese (Mn) |
≤ 0.30 |
|
Silicon (Si) |
≤ 0.20 |
|
Phosphorus (P) |
≤ 0.020 |
|
Sulfur (S) |
≤ 0.015 |
|
Nickel (Ni) |
≤ 0.15 |
|
Nitrogen (N) |
≤ 0.020 |
|
Iron (Fe) |
Balance (~65%) |
Keywords: ASME SA240/ASTM A240 UNS S44700 chemical composition, UNS S44700 composition, ASME SA240 Gr S44700 composition
Gangsteel notes that the ASME SA240/ASTM A240 UNS S44700 mechanical properties balance strength and corrosion resistance, ideal for severe environments. Annealing at 870-950°C (1600-1742°F) optimizes performance.
|
Property |
Value at 20°C |
|---|---|
|
Tensile Strength (MPa) |
≥ 450 (65 ksi) |
|
Yield Strength (MPa) |
≥ 310 (45 ksi) |
|
Elongation (%) |
≥ 20 |
|
Hardness (HBW) |
≤ 190 |
|
Density |
7.70 g/cm³ (0.278 lb/in³) |
Keywords: ASME SA240/ASTM A240 UNS S44700 mechanical properties, UNS S44700 strength, ASME SA240 Gr S44700 mechanical properties
Gangsteel supplies sa240/a240 uns s44700 in various forms, compliant with ASTM A240 and ASME SA240:
Keywords: ASME SA240/ASTM A240 UNS S44700 specifications, UNS S44700 sheet specifications, ASME SA 240 Gr S44700 coil
Gangsteel highlights that ASME SA240/ASTM A240 UNS S44700 excels in extreme corrosive applications:
Case Study: A Middle Eastern desalination plant used UNS S44700 for evaporator tubing, achieving a 10% cost reduction compared to sa240/a240 uns s44800.
Keywords: ASME SA240/ASTM A240 UNS S44700 applications, UNS S44700 uses, ASME SA240 Gr S44700 applications
Gangsteel presents a comparison of sa240/a240 uns s44700 with six ferritic grades:
|
Property |
UNS S44700 |
UNS S41003 |
UNS S41008 |
UNS S42900 |
UNS S43000 |
UNS S43035 |
UNS S44400 |
|---|---|---|---|---|---|---|---|
|
UNS Number |
S44700 |
S41003 |
S41008 |
S42900 |
S43000 |
S43035 |
S44400 |
|
Type |
Ferritic |
Ferritic |
Ferritic |
Ferritic |
Ferritic |
Ferritic |
Ferritic |
|
Chromium Content |
28.0-30.0% |
10.5-12.5% |
11.5-13.5% |
14.0-16.0% |
16.0-18.0% |
17.0-19.0% |
17.5-19.5% |
|
Nickel Content |
≤ 0.15% |
≤ 1.0% |
≤ 0.60% |
≤ 0.75% |
≤ 0.75% |
≤ 0.5% |
≤ 1.0% |
|
Manganese Content |
≤ 0.30 |
≤ 1.5 |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
|
Molybdenum Content |
3.5-4.2% |
- |
- |
- |
- |
- |
1.75-2.50% |
|
Nitrogen Content |
≤ 0.020% |
≤ 0.03% |
- |
- |
- |
≤ 0.03% |
≤ 0.035% |
|
Carbon Content |
≤ 0.010% |
≤ 0.03% |
≤ 0.08% |
≤ 0.12% |
≤ 0.12% |
≤ 0.03% |
≤ 0.025% |
|
Corrosion Resistance |
Unparalleled |
Good |
Good |
Good |
Good |
Excellent |
Excellent |
|
Strength |
Moderate |
Moderate |
Moderate |
Moderate |
Moderate |
Moderate |
Moderate |
|
Temp Range |
Up to 1050°C |
Up to 650°C |
Up to 650°C |
Up to 675°C |
Up to 815°C |
Up to 815°C |
Up to 815°C |
|
Cost (USD/kg) |
5-7.5 |
2.5-4 |
3-5 |
3-5 |
3-5 |
3-5 |
3.6-6 |
|
Applications |
Desalination, chemical processing |
Structural supports |
Automotive, industrial |
Appliances |
Appliances |
Automotive exhausts |
Chemical processing |
Keywords: ASME SA240/ASTM A240 UNS S44700 vs related grades
Gangsteel ensures ASME SA240/ASTM A240 UNS S44700 aligns with global standards:
|
Standard |
Grade |
|---|---|
|
UNS |
S44700 |
|
W.Nr. |
1.4539 |
|
EN |
X1CrMo29-4 |
|
GB |
008Cr30Mo4 |
|
JIS |
SUS 447J1 |
|
ASTM |
A240 |
|
ASME |
SA240 |
Keywords: ASME SA240/ASTM A240 UNS S44700 equivalent, UNS S44700 equivalent, EN X1CrMo29-4, GB 008Cr30Mo4, JIS SUS 447J1
Q: How does UNS S44700 compare to UNS S44400 in corrosion resistance and applications?
A: UNS S44700, with 28.0-30.0% chromium and 3.5-4.2% molybdenum, offers superior corrosion resistance (PREN ~37.0-41.5) compared to sa240/a240 uns s44400 (PREN ~20.5-24.5). Its low carbon (≤ 0.010%) enhances weldability, making it ideal for extreme environments like seawater desalination, while UNS S44400 suits milder chemical processing applications due to lower alloy content and cost.
Q: Is UNS S44700 suitable for seawater desalination, and how does it compare to UNS S41003?
A: Yes, sa240/a240 uns s44700 is highly suitable for seawater desalination due to its unparalleled corrosion resistance and high-temperature stability up to 1050°C (1922°F). Compared to sa240/a240 uns s41003, with lower chromium (10.5-12.5%) and no molybdenum, UNS S44700 offers significantly better corrosion resistance, making it ideal for harsh environments, while UNS S41003 is better for structural applications.
Q: What is the price difference between UNS S44700 and UNS S44800, and what drives this difference?
A: UNS S44700 is priced at USD 5-7.5 per kg (FOB), slightly less than sa240/a240 uns s44800 (USD 5.5-8 per kg) due to differences in alloy content and processing complexity. UNS S44800 may include additional alloying elements or stricter controls, increasing costs. Factors like market demand, raw material availability, and production scale also influence the price difference.
Keywords: ASME SA240/ASTM A240 UNS S44700 FAQ, UNS S44700 stainless steel questions
Gangsteel invites you to contact them at admin@gangsteel.com for sa240/a240 uns s44700 quotes and custom solutions.
Keywords: ASME SA240/ASTM A240 UNS S44700 supplier, UNS S44700 sheet supplier, Gangsteel stainless steel exporter
ASME SA240/ASTM A240 UNS S44700 stainless steel sheet, UNS S44700 applications, ASME SA240 Gr S44700 mechanical properties
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