Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A815 WP-S UNS S32205 Duplex Stainless Steel Pipe Fittings 180 Degree U Bend B16.9
We, YUHONG GROUP, are one of the biggest manufacturers of stainless steel, duplex steel, alloy steel tubes and pipes, fittings, flanges in China. With development more than 33 years, we have accumulated a great many clients all around the world and our steel products also won the great praise among the customers.
ASTM A815 specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel fittings of seamless and welded construction. Class WP fittings are subdivided into four subclasses: Classes WP-S, WP-W, WP-WX, and WP-WU. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. The steel shall be melted by electric furnace, vacuum furnace, or electric furnace followed by vacuum or electroslag-consumable remelting. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining or by combination of two or more of these operations. The materials shall undergo heat treatment and shall follow the required cooling process and tempering temperature. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, silicon, sulfur, nickel, chromium, molybdenum, copper, nitrogen, and titanium. The mechanical properties of the fitting material shall conform to the required values in yield strength, tensile strength, elongation, and hardness.
Materials of Pipe & Pipe Fittings
| Titanium | Grades 1, 2, 5, 7, 9 and 12 |
| Duplex | UNS S31803 & S32205 |
| Super Duplex | UNS S32750 & S32760 |
| 6 Moly | UNS S31254, N08925 & N08926 |
| Copper Nickel | UNS C70600 C70620 C7060X C7150 C71520 C71640 |
Chemical Composition
| C | 1 |
| N | 0.03 |
| P | 0.02 |
| Si | 2 |
| Mn | 3.0 – 3.5 |
| Mo | 22.0 – 23.0 |
| Fe | 0.03 |
| Cr | 4.5 – 6.5 |
| S | 0.14 – 0.2 |
| Ni | Bal |
Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15% |
Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| ASTM A815 WP-S | 1.4462 | S32205 |
ASME B16.9 S32205 Duplex Pipe Fittings Dimensions
| NOMINAL PIPE SIZE | ALL FITTINGS | ALL FITTINGS | ELBOWS AND TEES | 180 DEG RETURN BENDS | 180 DEG RETURN BENDS | 180 DEG RETURN BENDS | REDUCERS | CAPS |
| NPS | O.D. at Bevel (1), (2) | I.D. at End | Centre -to- End Dimension A, B, C, M | Centre-to- Centre O | Back-to- Face K | Alignment of Ends U | Overall Length H | Overall Length E |
| (1), (3), (4) | ||||||||
| 1/2 to 2.1/2 | 0.06 | 0.03 | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| -0.03 | ||||||||
| 3 to 3.1/2 | 0.06 | 0.06 | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 4 | 0.06 | 0.06 | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 5 to 8 | 0.09 | 0.06 | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.25 |
| -0.06 | ||||||||
| 10 to 18 | 0.16 | 0.12 | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| -0.12 | ||||||||
| 20 to 24 | 0.25 | 0.19 | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| -0.19 | ||||||||
| 26 to 30 | 0.25 | 0.19 | 0.12 | … | … | … | 0.19 | 0.38 |
| -0.19 | ||||||||
| 32 to 48 | 0.25 | 0.19 | 0.19 | … | … | … | 0.19 | 0.38 |
| -0.19 |
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