2205 Duplex Stainless Steel Pipe Schedule 80 Price – Thick Walled Pipe Guide
Thick walled pipe in 2205 duplex stainless steel, schedule 80, offers high strength and corrosion resistance for demanding industrial applications. According to ASTM A312, these pipes are manufactured with a minimum yield strength of 450 MPa and tensile strength of 620 MPa. TeCarve, a reliable manufacturer and stockist, supplies thick walled pipe in grades 304, 316L, 310S, and 2205, with sizes including Schedule 80, 160, and XXS. The price of 2205 duplex stainless steel pipe schedule 80 varies based on dimensions, quantity, and market conditions.
Chemical Composition of 2205 Duplex Stainless Steel
According to ASTM A312, the chemical composition of 2205 duplex stainless steel includes a maximum carbon content of 0.03%, chromium between 22.0% and 23.0%, nickel between 4.5% and 6.5%, and molybdenum between 3.0% and 3.5%. This composition provides a balanced microstructure of approximately 50% austenite and 50% ferrite, resulting in a yield strength of at least 450 MPa and tensile strength of 620 MPa. TeCarve supplies 2205 pipe with EN 10204 3.1 mill test certificates verifying chemistry.
Mechanical Properties of Schedule 80 Thick Walled Pipe
Schedule 80 thick walled pipe in 2205 duplex stainless steel has a minimum yield strength of 450 MPa and tensile strength of 620 MPa, with an elongation of 25% in 2 inches. These values are significantly higher than those of 304 or 316L austenitic grades. For example, 304 has a yield strength of 205 MPa and tensile strength of 515 MPa. The higher strength allows for thinner walls in pressure applications, potentially reducing weight and cost. TeCarve performs mechanical testing on every heat to ensure compliance.
Corrosion Resistance of 2205 Duplex Pipe
2205 duplex stainless steel offers superior corrosion resistance compared to standard 316L. According to ASTM A312, the pitting resistance equivalent number (PREN) for 2205 is typically 35-38, while 316L has a PREN of 24-26. This makes 2205 ideal for environments containing chlorides, such as seawater and chemical processing. The duplex microstructure resists stress corrosion cracking (SCC) better than austenitic grades. TeCarve supplies 2205 pipe for offshore and chemical applications where corrosion resistance is critical.
Dimensional Standards for Schedule 80, 160, and XXS
Schedule 80, 160, and XXS thick walled pipes are defined by ANSI B36.10 and ASME B36.19. For example, a 2-inch nominal pipe size (NPS) schedule 80 pipe has an outside diameter of 60.3 mm and a wall thickness of 5.54 mm. Schedule 160 has a wall thickness of 8.74 mm, and XXS has 11.07 mm. These dimensions ensure consistent pressure ratings. TeCarve offers all schedules in grades 304, 316L, 310S, and 2205, with custom lengths available.
Price Factors for 2205 Duplex Schedule 80 Pipe
The price of 2205 duplex stainless steel pipe schedule 80 is influenced by raw material costs, wall thickness, diameter, and order quantity. As of 2025, the price per kilogram for 2205 is approximately 2.5 to 3 times that of 304 due to higher alloy content (nickel, chromium, molybdenum). TeCarve offers competitive pricing with an MOQ of 100–300 kg and lead time of 10–25 days after deposit. For a 2-inch schedule 80 pipe, the price per foot may range from $15 to $25 depending on market conditions.
Manufacturing Process and Quality Control
Thick walled pipe is manufactured through seamless or welded processes. For duplex grades like 2205, seamless pipe is preferred to avoid weld zone corrosion. TeCarve’s factory in Wenzhou, China, produces seamless thick walled pipe using hot extrusion and cold drawing. Quality control includes chemical analysis, mechanical testing, hydrostatic testing (typically 10% above design pressure), eddy current testing, and dimensional inspection. Each pipe is marked with heat number and grade per ASTM A312.
Comparison of 304, 316L, 310S, and 2205 Grades
| Grade | C% max | Ni% | Cr% | Key Property | Best For |
|---|---|---|---|---|---|
| 304 | 0.08 | 8.0-10.5 | 18.0-20.0 | General corrosion resistance | Food processing, architectural |
| 316L | 0.03 | 10.0-14.0 | 16.0-18.0 | Improved pitting resistance (Mo 2-3%) | Chemical, marine environments |
| 310S | 0.08 | 19.0-22.0 | 24.0-26.0 | High temperature strength up to 1100°C | Furnace parts, heat exchangers |
| 2205 | 0.03 | 4.5-6.5 | 22.0-23.0 | High strength (450 MPa yield) + SCC resistance | Oil & gas, chemical, offshore |
How to Choose the Right Grade for Your Application
- Determine operating temperature: use 310S for temperatures above 800°C; 304/316L for cryogenic to 800°C; 2205 for -50°C to 300°C.
- Assess corrosion environment: for chlorides or seawater, choose 2205 (PREN 35-38) or 316L (PREN 24-26); 304 for mild environments.
- Check pressure requirements: schedule 80, 160, or XXS wall thickness based on ASME B31.3 design code; 2205 allows thinner walls due to higher strength.
- Consider cost: 304 is most economical; 316L moderate; 310S and 2205 higher due to alloy content.
- Verify availability and lead time: TeCarve stocks all grades with MOQ 100–300 kg and lead time 10–25 days.
- Request certification: EN 10204 3.1 or 3.2 mill test certificate for traceability.
Industry Applications
- Oil & Gas: 2205 duplex schedule 80 pipe used for subsea pipelines and risers due to high strength and corrosion resistance.
- Chemical & Petrochemical: 316L and 2205 thick walled pipe for reactors, heat exchangers, and transfer lines handling corrosive chemicals.
- Marine & Shipbuilding: 2205 pipe for seawater cooling systems, ballast lines, and desalination plants.
- Power Generation: 310S schedule 160 pipe for superheater tubes and boiler components operating at high temperatures.
- Pharmaceutical & Medical: 304/316L sanitary thick walled pipe for clean steam and process lines requiring smooth surfaces.
Standards & Certifications
- ASTM A312 / ASME SA312: Standard specification for seamless and welded austenitic stainless steel pipe.
- ASTM A790 / ASME SA790: Standard for seamless and welded ferritic/austenitic duplex stainless steel pipe.
- EN 10216-5: European standard for seamless stainless steel tubes for pressure purposes.
- ISO 9001: Quality management system certification held by TeCarve.
- GOST 9941: Russian standard for seamless stainless steel pipes.
Frequently Asked Questions
What is the price of 2205 duplex stainless steel pipe schedule 80?
The price of 2205 duplex stainless steel pipe schedule 80 varies by size and quantity. As a general estimate, the cost per kilogram is 2.5 to 3 times that of 304 stainless steel. For a 2-inch schedule 80 pipe, the price per foot ranges from $15 to $25 depending on market conditions. Contact TeCarve for a current quote with your specific dimensions.
Is 2205 duplex pipe better than 316L?
2205 duplex offers higher strength (450 MPa yield vs 205 MPa for 316L) and better resistance to stress corrosion cracking (SCC) in chloride environments. Its PREN of 35-38 is higher than 316L’s 24-26, providing superior pitting resistance. However, 2205 is more expensive and has lower ductility at cryogenic temperatures. For high-pressure, corrosive applications, 2205 is often the better choice.
What sizes are available for schedule 80 thick walled pipe?
Schedule 80 thick walled pipe is available in nominal pipe sizes (NPS) from 1/8 inch (10.3 mm OD) to 36 inches (914 mm OD) per ANSI B36.10. Common sizes include 1/2, 1, 2, 4, 6, 8, 10, and 12 inches. TeCarve stocks sizes up to 12 inches in grades 304, 316L, 310S, and 2205. Custom sizes and lengths are available upon request.
Can 2205 duplex pipe be used for high-temperature applications?
2205 duplex stainless steel is typically not recommended for continuous service above 300°C (572°F) due to the risk of embrittlement from sigma phase formation. For high-temperature applications above 800°C, use 310S stainless steel, which maintains oxidation resistance up to 1100°C. For moderate temperatures up to 300°C, 2205 performs well.
What is the difference between schedule 80, 160, and XXS pipe?
These are wall thickness designations per ANSI B36.10. Schedule 80 has a standard wall thickness for given NPS; schedule 160 is thicker; and XXS (double extra strong) is the thickest standard wall. For example, a 2-inch pipe has schedule 80 wall of 5.54 mm, schedule 160 of 8.74 mm, and XXS of 11.07 mm. Thicker walls provide higher pressure ratings.
Does TeCarve provide mill test certificates for thick walled pipe?
Yes, TeCarve provides EN 10204 3.1 or 3.2 mill test certificates with every shipment of thick walled pipe. These certificates include chemical analysis, mechanical properties, heat treatment details, and nondestructive testing results. This ensures full traceability and compliance with ASTM A312 and ASME SA312 standards.
What is the minimum order quantity for 2205 duplex pipe?
TeCarve’s standard minimum order quantity (MOQ) for 2205 duplex stainless steel pipe is 100–300 kg, depending on size and schedule. Smaller trial orders are available for first-time buyers. This allows customers to test the material before committing to larger volumes. Lead time is typically 10–25 days after deposit.
How is thick walled pipe tested for quality?
Thick walled pipe undergoes multiple quality control tests per ASTM A312: chemical analysis (spectrometer), mechanical testing (tensile, yield, elongation), hydrostatic testing (pressure at 10% above design), eddy current testing (for seamless), and dimensional inspection. TeCarve also performs flattening and flaring tests on selected samples.
Can I get a sample of 2205 schedule 80 pipe before ordering?
Yes, TeCarve can provide small sample pieces of 2205 duplex schedule 80 pipe for evaluation. Samples are typically cut to 100–200 mm lengths and shipped at cost. Contact sales@tecarve.com with your requirements. Sample orders are subject to availability and may incur shipping charges.
What is the delivery time for thick walled pipe to the USA?
TeCarve ships thick walled pipe to the USA via sea freight, with typical delivery times of 20–30 days after departure. Lead time from order to shipment is 10–25 days after deposit. For urgent orders, express air freight can be arranged. All shipments are tracked and insured. Contact TeCarve for a specific delivery estimate.
Market Data for 2205 Duplex Pipe
According to industry reports, the global duplex stainless steel market is expected to grow at a CAGR of 6.2% from 2024 to 2030, driven by demand from oil & gas and chemical industries. In 2023, 2205 duplex accounted for over 40% of duplex pipe sales due to its balanced properties. For thick walled pipe applications, schedule 80 in 2205 can withstand pressures up to 20 MPa at 100°C, making it a cost-effective alternative to higher alloys.
—
TeCarve Stainless supplies thick walled pipe certified to ASTM A312, ASME SA312.
Sizes: Schedule 80, 160, XXS
Grades: 304, 304L, 316, 316L, 321, 310S, 201, 430, 904L, Duplex 2205 | MOQ: 100–300 kg (smaller trial orders available) | Lead Time: 10–25 days after deposit
Email: sales@tecarve.com
WhatsApp: +86 189 6804 2695
Website: https://tecarvepipes.com/thick-walled-pipe/
Response within 24 hours.