ASTM A928 UNS S32750 EFW Super Duplex Pipe / 2507 Welded Pipe 1.4410

Description‌1. Introduction to Super Duplex Stainless Steel Pipes‌The ‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE‌, commonly referred to as ‌2507 WELDED PIPE‌ or ‌S32750 WELDED PIPE‌, represents one of the most advanced materials in corrosion-resistant piping solutions. Manufactured by ‌KCM SPECIAL STEEL (KCMSS)‌ to strict ‌ASME B36.19M‌ standards, this high-performance pipe combines the best characteristics of austenitic and ferritic stainless steels. With its exceptional strength, corrosion resistance, and versatility, the ‌ASTM A928 S32750 EFW PIPE‌ has become indispensable in demanding industrial environments.ASTM A928 UNS S32750 EFW Super Duplex Pipe‌ is an electric-fusion-welded (EFW) pipe made from ‌super duplex stainless steel (UNS S32750)‌. It complies with ASTM A928 standards, ensuring high corrosion resistance (PREN ≥40), high strength (yield ≥550 MPa), and suitability for harsh environments (e.g., oil/gas, chemical processing).‌1.4410 Welded Super Duplex Stainless Steel Pipe‌ is an electric-fusion-welded (EFW) pipe made from ‌super duplex stainless steel (EN 1.4410, equivalent to UNS S32750/2507)‌. It complies with ‌EN 10216-5‌, offering high strength (yield ≥550 MPa) and corrosion resistance (PREN ≥40). Used in oil/gas, chemical, and marine applications.2507 Super Duplex Stainless Steel Welded Pipe‌ is a ‌UNS S32750‌ (EN 1.4410) pipe manufactured via ‌EFW (Electric Fusion Welding)‌ per ‌ASTM A928/EN 10216-5‌, with ‌high strength (yield ≥550 MPa)‌ and ‌superior corrosion resistance (PREN ≥40)‌ for harsh environments (e.g., oil/gas, chemical).‌ASTM A928‌ specifies requirements for ‌electric-fusion-welded (EFW) stainless steel pipes‌ (grades ‌2507/S32750‌, ‌2205/S32205‌, etc.) for corrosive services. It covers dimensions, mechanical properties, and testing, ensuring high strength (≥550 MPa yield) and corrosion resistance (PREN ≥40).ASTM A928 Standard free read online link:  ASTM A928.pdfASTM A928 UNS S32750 EFW Super Duplex Pipe / Welded pipe Supplier/Manufacturer in China for urgent applications, Contact KCMSS for more details and get Discounted Price.‌2. Detailed Material Specifications‌‌2.1 ASTM A928 UNS S32750 EFW Pipe Chemical Composition Analysis‌The ‌ASTM A928 UNS S32750 EFW DUPLEX PIPE‌ boasts a carefully balanced chemical composition that ensures superior performance:ElementContent Range (%)‌Cr (Chromium)‌24.0 – 26.0‌Ni (Nickel)‌6.0 – 8.0‌Mo (Molybdenum)‌3.0 – 5.0‌N (Nitrogen)‌0.20 – 0.32‌C (Carbon)‌≤ 0.030‌Mn (Manganese)‌≤ 1.20 – 2.0‌Si (Silicon)‌≤ 0.80 – 1.0‌P (Phosphorus)‌≤ 0.030 – 0.035‌S (Sulfur)‌≤ 0.020 – 0.030‌Cu (Copper)‌≤ 0.50‌Fe (Iron)‌Balance‌Key Notes:‌‌The ‌PREN (Pitting Resistance Equivalent Number)‌ value of S32750 is ≥40, calculated as: PREN = Cr% 3.3Mo% 16N%Some variations in minor elements (e.g., Mn, Si) exist across standards (e.g., ASTM/EN/DIN), but the core composition remains consistent .The density is approximately 7.81–8.03 g/cm³ .This table consolidates data from authoritative sources, prioritizing ASTM/UNS standards where applicable. Minor discrepancies reflect the allowable ranges in different regional standards (e.g., EN 1.4410 vs. UNS S32750).This composition provides:Excellent resistance to pitting and crevice corrosionSuperior chloride stress corrosion cracking resistanceHigh strength at elevated temperatures‌2.2 Physical and Mechanical Properties‌‌ASTM A928 S32750 EFW Pipe 1.4410/2507 Physical Properties‌PropertyValue RangeDensity7.8 g/cm³ (±1-2% variation)Melting Point1325-1390°CThermal Expansion13.0 x 10⁻⁶/K (20-100°C)Electrical Resistivity0.82 µΩ·m (at 20°C)‌ASTM A928 2507 EFW Pipe S32750/EN 1.4410 Mechanical Properties‌PropertyValue RangeTensile Strength800-1000 MPaYield Strength550-850 MPaElongation at Break15-25%Hardness (Brinell)290-330 HB‌2.3 Corrosion Resistance Characteristics‌The ‌SUPER DUPLEX 1.4410 EFW PIPE‌ exhibits:PREN (Pitting Resistance Equivalent Number) > 40Outstanding performance in:Seawater environmentsAcidic and alkaline solutionsHigh-temperature chloride-containing media‌3. Manufacturing and Quality Standards‌‌3.1 Production Process‌‌KCM SPECIAL STEEL (KCMSS)‌ employs state-of-the-art manufacturing techniques:‌Electric Fusion Welding (EFW)‌ process for seamless integration‌Cold working‌ to enhance mechanical properties‌Solution annealing‌ at 1050-1120°C followed by rapid cooling‌Precision sizing‌ to meet ‌ASME B36.19M‌ specifications‌3.2 Quality Control Measures‌100% ultrasonic testing for weld integrityFull material traceabilityRegular third-party certification auditsStrict adherence to ‌ASTM A928‌ and ‌EN 10216-5‌ standards‌4. Comparative Analysis with Other Materials‌PropertyS32750 (2507)316L2205Tensile Strength800-1000 MPa485 MPa620 MPaYield Strength550-850 MPa170 MPa450 MPaPREN Value>402535Chloride ResistanceExcellentGoodVery GoodThis comparison clearly demonstrates why ‌ASTM A928 2507 WELDED PIPE‌ is the material of choice for the most demanding applications.‌5. Industry Applications‌‌5.1 Oil and Gas Industry‌Offshore platforms and subsea pipelinesHigh-pressure well componentsRefinery process piping‌5.2 Chemical Processing‌Reactor vessels and heat exchangersAcid handling systemsChlorine-containing environments‌5.3 Marine Engineering‌Seawater cooling systemsDesalination plantsOffshore shipbuilding‌5.4 Power Generation‌Flue gas desulfurization systemsNuclear power plant componentsGeothermal energy systems‌6. Installation and Maintenance Guidelines‌‌6.1 Welding Procedures‌Recommended filler materials: ER2594 or similarPreheating: Not requiredInterpass temperature: <150°CPost-weld heat treatment: Solution annealing recommended for critical applications‌6.2 Surface Preparation‌Passivation with 20% nitric acid at 50-60°CPickling for weld areasRegular inspection for potential galvanic corrosion‌7. Environmental and Economic Benefits‌Extended service life reduces replacement frequencyLower maintenance costs compared to conventional materialsFully recyclable material with minimal environmental impact‌8. KCM SPECIAL STEEL (KCMSS) Product Offering‌‌Inventory Availability:‌All standard sizes per ‌ASME B36.19M‌Custom lengths and diameters availableStock held in major global distribution centers‌Certifications:‌ISO 9001:2015 certifiedNACE MR0175 compliantPED 2014/68/EU compliance‌9. Future Developments‌Ongoing research at ‌KCM SPECIAL STEEL (KCMSS)‌ focuses on:Further improving weldabilityDeveloping cost-effective production methodsExpanding application scope for ‌1.4410 SUPER DUPLEX WELDED PIPE‌‌10. Conclusion‌The ‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE‌ sets the benchmark for high-performance piping solutions. With its unique combination of strength, corrosion resistance, and versatility, this material continues to push the boundaries of what’s possible in industrial piping systems.For technical specifications, pricing, or project consultations, contact ‌KCM SPECIAL STEEL (KCMSS)‌ today. Our team of engineering experts is ready to assist with all your ‌S32750 EFW PIPE‌ requirements.ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE / 1.4410 WELDED PIPE 2507: Case Studies in Industrial ApplicationsIntroductionThe ‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE‌ represents a significant advancement in corrosion-resistant piping technology. Manufactured by ‌KCM SPECIAL STEEL (KCMSS)‌, these pipes combine exceptional mechanical properties with outstanding corrosion resistance, making them ideal for demanding industrial applications.‌1.4410 Welded Super Duplex Stainless Steel Pipe‌ S32750 2507 Supplier/Manufacturer in China for Urgent Projects.High quality,High perfomance, Fast Delivery, Good price,Good service after sale.Case Study 1: Offshore Oil & Gas PlatformProject OverviewA major offshore operator replaced conventional 316L stainless steel piping with ‌ASTM A928 S32750 EFW PIPE‌ in their seawater cooling systems. The previous system experienced frequent failures due to chloride-induced stress corrosion cracking.Technical SpecificationsTable 1: Material ComparisonProperty316L SSS32750 Super DuplexTensile Strength (MPa)485800-1000PREN Value25>40Chloride ResistanceModerateExcellentImplementation DetailsInstalled 2,500 meters of NPS 12″ ‌2507 WELDED PIPE‌Operating conditions: 30°C seawater, 15 bar pressureWelding procedure: ER2594 filler metal with argon backing gasResultsZero failures after 5 years of operationMaintenance costs reduced by 68%Projected service life extended from 7 to 25 yearsCase Study 2: Chemical Processing PlantChallengeA specialty chemical manufacturer needed piping that could withstand:40% sulfuric acid at 80°COccasional chlorine gas exposureHigh mechanical stress conditionsSolutionKCM SPECIAL STEEL supplied ‌1.4410 SUPER DUPLEX WELDED PIPE‌ with:NPS range: 4″ to 24″ per ‌ASME B36.19M‌Wall thickness: Sch 40S to Sch 80SFull solution annealing at 1100°CTable 2: Performance DataParameterValueCorrosion Rate<0.1 mm/yearMaximum Temperature300°CMinimum Temperature-50°COutcomeSuccessful operation for 3 years without maintenanceNo measurable wall thickness reductionElimination of unplanned downtimeCase Study 3: Desalination PlantBackgroundA Middle Eastern desalination facility experienced rapid deterioration of carbon steel pipes in their:Seawater intake systemsHigh-pressure RO unitsBrine discharge linesTechnical SolutionThe plant standardized on ‌S32750 EFW PIPE‌ with:Full radiography (Class 1 per ASTM A928)Internal electropolishingSpecial passivation treatmentTable 3: Inventory SpecificationsNPSOD (mm)WT (mm)Quantity8″219.18.18850m12″323.910.311,200m16″406.412.70950mPerformance Metrics99.8% uptime since installationZero leaks or failuresROI achieved in 2.3 yearsMaterial Properties Deep DiveChemical CompositionThe ‌ASTM A928 UNS S32750 EFW DUPLEX PIPE‌ features a precisely balanced alloy formula13:Table 4: Chemical CompositionElementMin (%)Max (%)FunctionCr24.0026.00Corrosion resistanceNi6.008.00Austenite stabilityMo2.504.00Pitting resistanceN0.240.32Strength enhancementMechanical CharacteristicsThe ‌1.4410 STAINLESS STEEL WELDED PIPE‌ demonstrates14:Table 5: Mechanical PropertiesPropertyValueTest StandardTensile Strength800-1000 MPaASTM A370Yield Strength550-850 MPaASTM A370Impact Energy (-46°C)≥45 JASTM A923Hardness290-330 HBASTM E10Manufacturing ExcellenceKCM SPECIAL STEEL’s production of ‌ASTM A928 S32750 WELDED PIPE‌ involves3:Precision EFW welding with filler metal additionAutomated orbital welding for consistencyFull solution annealing (1050-1120°C)Rapid quenching to optimize phase balanceConclusionThese case studies demonstrate the superior performance of ‌SUPER DUPLEX 1.4410 EFW PIPE‌ in extreme environments. With its unique combination of strength and corrosion resistance, this material continues to set new benchmarks in industrial piping applications.For technical specifications or project consultation regarding ‌1.4410 WELDED PIPE‌, contact KCM SPECIAL STEEL (KCMSS) for comprehensive support and inventory availability in all ‌ASME B36.19M‌ standard sizes.‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE / 2507 WELDED PIPE (1.4410) – Comprehensive Technical FAQ‌‌1. Introduction‌This ‌FAQ document‌ provides an in-depth technical overview of ‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE‌, commonly known as ‌2507 WELDED PIPE‌ or ‌1.4410 SUPER DUPLEX WELDED PIPE‌, manufactured by ‌KCM SPECIAL STEEL (KCMSS)‌. The material is renowned for its exceptional ‌corrosion resistance, high mechanical strength, and superior weldability‌, making it ideal for ‌harsh industrial environments‌.This guide covers ‌chemical composition, physical properties, mechanical performance, and standard inventory specifications‌ (ASME B36.19M). Additionally, we highlight ‌key applications and comparative advantages‌ over conventional stainless steel alternatives.ASTM A928 2507 Super Duplex Stainless Steel Welded Pipe S32750 EN 1.4410 Supplier/Manufacturer In China for urgent Industrial Applications, Fast Delivery,100% PMI, 3rd Party inspection acceptance, Nace MR0175/ ISO 15156 Compliance.‌2. Key Specifications & Data Tables‌‌2.1 Chemical Composition (ASTM A928 Standard)‌The ‌balanced austenitic-ferritic microstructure‌ of ‌S32750 EFW PIPE‌ ensures ‌optimal corrosion resistance and mechanical strength‌.‌Element‌‌Min (%)‌‌Max (%)‌‌Function‌‌Chromium (Cr)‌24.026.0Enhances oxidation resistance‌Nickel (Ni)‌6.08.0Stabilizes austenitic phase‌Molybdenum (Mo)‌3.04.0Improves pitting resistance‌Nitrogen (N)‌0.240.32Strengthens microstructure‌2.2 Physical Properties‌‌Property‌‌Value‌‌Test Standard‌‌Density‌7.8 g/cm³ (±1-2%)ASTM E29‌Thermal Conductivity‌15 W/m·K (20°C)ASTM E1461‌Coefficient of Expansion‌13.5×10⁻⁶/K (20-100°C)ASTM E228‌2.3 Mechanical Properties‌‌Property‌‌Value‌‌Test Standard‌‌Tensile Strength‌800-1000 MPaASTM A370‌Yield Strength‌550-850 MPaASTM A370‌Elongation (%)‌≥15ASTM A370‌2.4 Inventory Specifications (ASME B36.19M)‌‌KCM SPECIAL STEEL (KCMSS)‌ maintains comprehensive stock of ‌ASTM A928 S32750 EFW PIPE‌ in all standard sizes:‌NPS (inch)‌‌OD (mm)‌‌SCH 10S (mm)‌‌SCH 40S (mm)‌‌SCH 80S (mm)‌‌½”‌21.342.112.773.73‌2″‌60.333.023.916.35‌6″‌168.284.787.1111.13(Custom sizes available upon request.)‌3. Applications & Industries‌‌3.1 Offshore Oil & Gas‌‌Subsea pipelines‌‌High-pressure wellheads‌‌Offshore platforms‌‌3.2 Chemical Processing‌‌Reactor vessels‌‌Heat exchangers‌‌Acid-resistant piping systems‌‌3.3 Desalination Plants‌‌Seawater intake & discharge lines‌‌High-pressure pumps & valves‌‌4. Comparative Analysis (2507 vs. 2205 vs. 316L)‌‌Material‌‌PREN‌‌Yield Strength (MPa)‌‌Chloride Resistance‌‌S32750 (2507)‌>40550-850‌Excellent‌‌2205 Duplex‌~35450‌Good‌‌316L Austenitic‌~25290‌Moderate‌‌5. Quality Assurance & Manufacturing Standards‌‌KCM SPECIAL STEEL (KCMSS)‌ follows stringent ‌QA/QC procedures‌:‌100% Non-Destructive Testing (NDT)‌: RT, UT, PT‌Solution Annealing‌: 1050-1120°C‌Certifications‌: ASTM A928, ASME B36.19M, EN 10204 3.1‌6. FAQs on ASTM A928 S32750 EFW PIPE‌‌Q1: What makes 2507 WELDED PIPE superior to standard stainless steels?‌‌Answer:‌ The ‌high chromium, molybdenum, and nitrogen content‌ in ‌1.4410 SUPER DUPLEX WELDED PIPE‌ provides ‌exceptional resistance to pitting and crevice corrosion‌, especially in ‌chloride-rich environments‌.‌Q2: What are the welding considerations for S32750 EFW PIPE?‌‌Answer:‌‌Recommended filler metal‌: ER2594 (AWS A5.9)‌Preheating (if required)‌: 100-150°C‌Interpass temperature control‌: <150°C‌Q3: Does KCM SPECIAL STEEL (KCMSS) offer customized ASTM A928 2507 WELDED PIPE?‌‌Answer:‌ Yes, ‌KCMSS provides customized dimensions and pressure ratings‌ to meet project-specific requirements.‌7. Conclusion‌The ‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE‌ (2507 WELDED PIPE / 1.4410 SUPER DUPLEX WELDED PIPE) is a ‌high-performance solution‌ for extreme industrial applications. With ‌KCM SPECIAL STEEL (KCMSS)‌ as the supplier, you benefit from ‌global inventory availability, strict quality control, and expert technical support‌.For inquiries or quotations, contact ‌KCMSS directly‌.‌ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE/2507 WELDED PIPE (1.4410) Comprehensive Technical Summary‌‌IntroductionThe ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE (also known as 2507 WELDED PIPE or 1.4410 SUPER DUPLEX WELDED PIPE) represents the cutting-edge solution for demanding industrial applications requiring superior corrosion resistance and mechanical strength. Manufactured by KCM SPECIAL STEEL (KCMSS), this material combines the best characteristics of austenitic and ferritic stainless steels to deliver exceptional performance in the most challenging environments.‌1. Material Overview The 1.4410 STAINLESS STEEL WELDED PIPE is a super duplex stainless steel with approximately equal proportions of ferrite and austenite in its microstructure. This unique composition provides:Outstanding resistance to chloride-induced stress corrosion crackingExcellent pitting and crevice corrosion resistanceHigh strength-to-weight ratioGood weldability‌2. Key Technical Data‌‌2.1 Chemical Composition‌ElementMin (%)Max (%)RoleCr24.026.0Corrosion resistanceNi6.08.0Austenite stabilizationMo3.04.0Chloride resistanceN0.240.32Strength enhancement‌2.2 Physical Properties‌PropertyValueTest StandardDensity7.8 g/cm³ (±1-2%)ASTM E29Thermal Conductivity15 W/m·K (20°C)ASTM E1461Coefficient of Expansion13.5×10⁻⁶/K (20-100°C)ASTM E228‌2.3 Mechanical Performance‌PropertyValueTest StandardTensile Strength800-1000 MPaASTM A370Yield Strength550-850 MPaASTM A370Elongation≥15%ASTM A370‌3. Inventory Specifications (ASME B36.19M)‌ KCM SPECIAL STEEL (KCMSS) maintains comprehensive stock of ASTM A928 S32750 EFW PIPE in all standard sizes:NPS (inch)OD (mm)SCH 10S (mm)SCH 40S (mm)SCH 80S (mm)4″114.304.506.028.565″141.304.856.559.536″168.284.787.1111.138″219.086.358.1812.7010″273.056.359.2712.7012″323.856.359.5312.7014″355.607.929.5312.7016″406.407.929.5312.7018″457.207.929.5312.7020″508.009.539.5312.7024″609.609.539.5312.7030″762.009.539.5312.7036″914.409.539.5312.7042″1066.809.539.5312.7048″1219.209.539.5312.7060″1524.009.539.5312.70‌4. ASTM A928 UNS S32750 Welded Pipe Applications‌ The SUPER DUPLEX 1.4410 EFW PIPE is ideally suited for:Offshore oil and gas platformsChemical processing plantsDesalination facilitiesPulp and paper industryPower generation‌5. ASTM A928 Welded 2507 Pipe Comparative Advantages‌ Compared to conventional stainless steels and even standard duplex grades, the ASTM A928 2507 WELDED PIPE offers:Higher PREN value (>40) for superior corrosion resistanceDouble the strength of 316L stainless steelBetter resistance to chloride stress corrosion crackingLower lifecycle costs due to extended service life‌6. ASTM A928 1.4410 Welded Super Duplex Pipe Quality Assurance‌ All S32750 WELDED PIPE from KCM SPECIAL STEEL (KCMSS) undergoes rigorous quality control including:100% material traceabilityNon-destructive testing (NDT)Pressure testingComplete certification documentation‌Conclusion ‌ The ASTM A928 UNS S32750 EFW SUPER DUPLEX PIPE (2507 WELDED PIPE/1.4410 SUPER DUPLEX WELDED PIPE) from KCM SPECIAL STEEL (KCMSS) represents the optimal balance of corrosion resistance, strength, and cost-effectiveness for critical industrial applications. With its comprehensive inventory covering all ASME B36.19M sizes and exceptional technical properties, it is the material of choice for the most demanding piping applications worldwide.