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Silver Tubes is one of the renowned exporting House of Hastelloy Forged Fittings, which resists the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. Hastelloy Forged Socket Weld Fittings also offers optimum resistance to environments where reducing and oxidizing conditions are encountered in process streams. One of the chief attributes of Hastelloy Forged Threaded Fittings is their resistance to chloride-induced stress corrosion cracking. A common solution for assessing the resistance of Hastelloy Forged Socket Weld Elbow Fittings to this extremely destructive form of attack is boiling 45 percentage of magnesium chloride. At elevated temperatures, the high chromium level of Hastelloy Forged Threaded Elbow Fittings helps it resist oxidation, carburization, and sulfidation.
Hastelloy Forged Socket Weld Tee Fittings resists the formation of grain boundary precipitates in the weld heat affected zone, thus making it suitable for most chemical process applications in the as-welded condition. Hastelloy Forged Threaded Tee Fittings can also be successfully deep-drawn, spun, press formed or punched, although the alloy tends to work-harden. Hastelloy Forged Socket Weld Cross Fittings is beneficial in multi- purpose plants where such upset conditions occur frequently. Since it is nickel-base, Hastelloy Forged Threaded Cross Fittings resists high temperature attack by halides (e.g., chlorides and fluorides). With these attributes, Hastelloy Forged Socket Weld Coupling Fittings is widely used to protect steel tubes and other components in coal-fired and waste-to-energy boilers.
| Specifications | ASTM B564 / ASME SB564 |
| Dimensions | ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799 |
| Size | 1/8" NB to 4" NB (Socketweld & Screwed-Threaded) |
| Type | Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type) |
| Rating Pressure Class | Threaded End - 2000 /3000/ 6000 LBS. Socket-weld End - 3000 / 6000/ 9000 LBS. |
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN | OR |
| Hastelloy C276 | 2.4819 | N10276 | NW 0276 | ХН65МВУ | NiMo16Cr15W | ЭП760 |
| Hastelloy C22 | 2.4602 | N06022 | NW 6022 | - | NiCr21Mo14W | - |
| Hastelloy B2 | 2.4617 | N10665 | - | - | - | - |
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| C276 | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 50.99 min* | 14.50 – 16.50 | 4.00 – 7.00 | 15.00 – 17.00 | 0.04 max |
| C22 | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 50.015 min* | 20.00 – 22.50 | 2.00 – 6.00 | 12.50 – 14.50 | 0.02 max |
| B2 | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | Bal | 1.0 max | 2.0 max | 26 – 30 | 0.04 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
| Hastelloy C22 | 8.69 g/cm3 | 1399 °C (2550 °F) | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 45 % |
| Hastelloy B2 | 9.2 g/cm3 | 1370 °C (2500 ºF ) | Psi – 1,10,000 , MPa – 760 | Psi – 51000 , MPa – 350 | 40 % |
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