Yuhong Group Co., Ltd. is a certified manufacturer and specialized supplier of nickel-based superalloy components and severe-service hardware for thermal processing equipment. Operating through www.tema-heatexchanger.com, we design, precision-machine, and supply custom Inconel 617 (UNS N06617 / 2.4663) bolts, studs, heavy hex nuts, precision washers, and custom-fabricated support plates engineered for ultra-high-temperature environments exceeding 1000°C (1832°F).
Whether you are securing a high-temperature u tube bundle inside a critical shell and tube heat exchanger, anchoring an elevated-duty finned tube bundle, or sourcing precision internal hardware alongside a forged heat exchanger tubesheet, Yuhong Group delivers fully traceable, laser-marked superalloy hardware tailored to strict ASME and API standards.
Our Inconel 617 hardware assemblies are custom-machined to exact client drawings to support process piping, tube grids, and internal baffle structures:
Inconel 617 is a solid-solution, nickel-chromium-cobalt-molybdenum alloy characterized by an exceptional combination of metallurgical stability, high-temperature creep resistance, and oxidation resistance:
| Property / Parameter | Technical Specification | Engineering Significance |
|---|---|---|
| Material Designation | UNS N06617 / W.Nr. 2.4663 / Alloy 617 | Certified nickel-based superalloy for severe thermal service |
| Chemical Composition | Ni 44.5% min, Cr 20.0-24.0%, Co 10.0-15.0%, Mo 8.0-10.0%, Al 0.8-1.5% | High cobalt and molybdenum content imparts extreme rupture strength |
| Temperature Limit | Continuous operation up to 1100°C (2012°F) | Exceeds operating limits of standard SS316, SS310, or Incoloy 800H |
| Quality Traceability | 100% Heat Batch Laser Marking (e.g., `YH ALLOY 617 [Heat No.]`) | Full mill test report (MTR to EN 10204 3.1) provided with every lot |
To streamline turnaround maintenance and original equipment manufacturing (OEM), Yuhong Group supplies complete internal hardware packages alongside primary heat transfer components:
| Component | Function in Heat Exchanger Equipment | Technical Highlight |
|---|---|---|
| Inconel 617 Support Plates | Holds tube runs in precise geometric pitch and prevents sag. | Slotted and bevel-edged holes eliminate fretting damage on neighboring tubes. |
| Heat Exchanger Tubesheet | Anchors tubes and seals process fluid inside the shell. | Precision drilled and grooved for expanded or strength-welded tube joints. |
| U Tube Bundle / Straight Bundle | Primary heat transfer core matrix. | Pre-assembled with Inconel 617 spacer sleeves and hydrostatically tested before delivery. |
| Finned Tube Bundle | High-efficiency air-side heat transfer module. | Secured using high-alloy support clips to resist severe flow-induced vibration. |
| Heavy Hex Nuts & Tie Rods | Secures internal baffle assemblies and support plates. | Thread-rolled design eliminates stress concentration points under thermal cycling. |
When specifying Inconel 617 fasteners and support plates for a shell and tube heat exchanger or specialized u tube bundle, process engineers should observe the following best practices:
Need custom Inconel 617 bolts, heavy washers, laser-cut support plates, or replacement tube bundle assemblies? Contact the Yuhong Group technical sales team today:
