ASTM A815 UNS S31803 S32205 Duplex Stainless Steel Reducer Butt Weld Pipe Fitting with High Strength and Excellent SCC Resistance
Price:
Negotiable
MOQ:
1PC
Delivery Time:
15-30 Workdays
Brand:
TOBO
Product Description
ASTM A815 UNS S31803 S32205 Duplex Stainless Steel Reducer Butt Weld Pipe Fitting ASME B16.9
Product Overview
Our ASTM A815 UNS S31803/S32205 duplex stainless steel reducers combine the best properties of austenitic and ferritic stainless steels. With approximately twice the yield strength of standard 316L and outstanding resistance to stress corrosion cracking, these reducers are the premier choice for demanding offshore, marine, and chemical processing applications.
Product Specifications
| Type | Concentric Reducer, Eccentric Reducer |
|---|---|
| Material | ASTM A815 UNS S31803, UNS S32205 (Duplex 2205) |
| Size Range | 1/2 Inch to 48 Inch (DN15-DN1200) |
| Wall Thickness | SCH5S, SCH10S, SCH40S, SCH80S, SCH160, XXS |
| Form | Seamless and Welded |
| Standard | ASME B16.9, MSS SP75, EN10253, NORSOK M-650 |
| Key Property | High Strength (2x 316L) with Excellent SCC Resistance |
| Application | Offshore Platforms, Chemical Tankers, Desalination, Oil and Gas |
Dimension Chart (ASME B16.9 Duplex Reducer)
| DN | NPS | Large OD (mm) | Small OD (mm) | End to End H (mm) |
|---|---|---|---|---|
| 25x20 | 1x3/4 | 33.7 | 26.9 | 51 |
| 40x25 | 1-1/2x1 | 48.3 | 33.7 | 64 |
| 50x40 | 2x1-1/2 | 60.3 | 48.3 | 76 |
| 80x50 | 3x2 | 88.9 | 60.3 | 89 |
| 100x80 | 4x3 | 114.3 | 88.9 | 102 |
| 150x100 | 6x4 | 168.3 | 114.3 | 140 |
| 200x150 | 8x6 | 219.1 | 168.3 | 152 |
| 250x200 | 10x8 | 273.0 | 219.1 | 178 |
| 300x250 | 12x10 | 323.9 | 273.1 | 203 |
| 350x300 | 14x12 | 355.6 | 323.9 | 330 |
| 400x350 | 16x14 | 406.4 | 355.6 | 356 |
| 500x400 | 20x16 | 508.0 | 406.4 | 508 |
Duplex 2205 vs 316L Mechanical Properties Comparison
| Property | Duplex 2205 (S32205) | 316L Austenitic | Advantage |
|---|---|---|---|
| Yield Strength (MPa) | min 450 | min 170 | 2.6x Stronger |
| Tensile Strength (MPa) | min 655 | min 485 | 35% Higher |
| Elongation (%) | min 25 | min 40 | 316L more ductile |
| Hardness (HRC) | max 28 | max 22 | Duplex harder |
| PREN (Pitting Resistance) | 34-38 | 24-26 | Superior Pitting Resistance |
| SCC Resistance | Excellent | Moderate | Superior SCC Resistance |
| Thermal Conductivity (W/m.K) | 19 | 15 | Better Heat Transfer |
Chemical Composition of Duplex 2205
| Element | C | Cr | Ni | Mo | N | Mn | Si | Fe |
|---|---|---|---|---|---|---|---|---|
| Content (%) | max 0.03 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | max 2.00 | max 1.00 | Balance |
Key Advantages
- Twice the yield strength of 316L - enables thinner wall design and weight savings
- Excellent resistance to stress corrosion cracking in chloride environments
- Superior pitting and crevice corrosion resistance (PREN greater than 34)
- ISO/TUV/SGS certified with full NORSOK M-650 compliance available
- Third-party inspection accepted (SGS, BV, TUV, DNV, ABS, LR)
- Cost-effective alternative to super duplex for many applications
- Non-destructive testing available: UT, RT, PT, PMI upon request
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Company
TOBO STEEL GROUP CHINA
Location
2F,Building7,Baolong Center,No.689,Xiwang Road,Jiading District,Shanghai,201800,China
Contact Person
Joy Wang