This article is about Hastelloy (C276) Set-on Branch Fittings and technical specification based on international codes and standards of ASTM B 564.
Hastelloy (C276) Set-on Branch Fittings | ASTM B 564
| Scope Description | Hastelloy (C276), forged, set-on branch pipe fittings.
(Integrally Reinforced Forged Branch Outlet Fittings – Butt-Welding Ends) e.g., weldolets. |
| Material Specification | ASTM B 564. Alloy: UNS N10276. Solution Annealed. |
| Dimensional
Specification |
MSS SP-97. Threads shall be NPT in accordance with ASME B1.20.1, unless otherwise stated on the purchase order as ISO or BSP. When specified as ISO or BSP, the threads shall be tapered in accordance with ISO 7/1 or BS 21 (BSP). |
| Purchase Order | See purchase order for type of fitting, DN or NPS, fitting pressure class, schedule or weight class or wall thickness of branch, number of pieces, and delivery and shipping instructions. |
| Lengths | Not applicable. |
| Tolerances | MSS SP-97. |
| Drawings | Not required. |
| Calculations | Set-on branch fittings to this specification shall meet the design proof or calculation requirements of MSS SP-97 and ASME B31.3. Submission of calculations is not required. |
| Chemical Composition | ASTM B564, Alloy UNS N10276. |
| Mechanical Strength | ASTM B564, Alloy UNS N10276. |
| Welding | Not applicable. |
| Heat Treatment | ASTM B 564, Alloy UNS N10276. Solution Annealed Supplied in the annealed condition. |
| Inspection | ASTM B 564. Inspection is not required, unless specified in the purchase order. |
| Testing | ASTM B 564. Analysis samples are not required. |
| Examination | ASTM B 564. |
| Certification | A Test report to ASTM B564. Also see General Piping Material Purchase Specification. |
| Marking | MSS SP-97. Marking shall also include the heat identification and the Commodity Code. Also see General Piping Material Purchase Specification. |
| Protection | ASTM B 564. |
| Color Coding | Not required. |
| Packing | Shipment and Packing Specification for Equipment and Materials. Suitable packing shall be provided to ensure that all items arrive at the contractual point of delivery in an undamaged condition. Refer to the purchase order for specific packing standards and instructions. |
| Special Requirements | Fittings should always be selected based on the run pipe schedule, not the branch schedule. Where a non-standard schedule is specified, the next highest schedule specified in MSS SP-97 should be selected and the fitting prepped to suit. |
Application Notes
Monel, set-on branch fittings.
Pressure: MSS SP-97 as calculated for stated pipe.
Temperature -40° to +260°C (-40° to +500°F).
Note: This engineering specification shall be used in conjunction with General Piping Material Purchase Specification.