Alloy 46,Glass sealing 46 Alloy Fittings,UNS K94600,E FORU

British Specs:，American Specs: ASTM F30，German Specs:

### **Alloy 46 (Glass Sealing 46) - Fittings Product Overview** **Alloy 46** is a controlled expansion iron-nickel alloy specifically engineered for creating reliable hermetic seals with soft glass. The **Fittings** form encompasses precision-manufactured components designed for connecting, terminating, or transitioning glass-to-metal seals in various industrial and electronic systems where thermal expansion compatibility is paramount. * **UNS Designation:** **K94600** * **Product Type:** Precision Fittings, Connectors, Adapters --- #### **1. Chemical Composition** The chemical composition maintains strict control to ensure consistent thermal performance in finished fittings. | Element | Percentage (%) | Role in the Alloy | |:---|:---|:---| | **Nickel (Ni)** | 45.0 - 47.0 | Controls thermal expansion characteristics | | **Iron (Fe)** | Balance | Base structural element | | **Manganese (Mn)** | 0.10 - 0.30 | Enhances manufacturability | | **Silicon (Si)** | 0.10 - 0.30 | Improves glass sealing performance | | **Carbon (C)** | 0.05 max | Limited for weldability | | **Sulfur (S)** | 0.02 max | Controlled impurity | | **Phosphorus (P)** | 0.02 max | Controlled impurity | --- #### **2. Physical Properties** Physical properties ensure reliable performance in glass sealing applications. | Property | Value / Condition | |:---|:---| | **Density** | 8.18 g/cm³ | | **Melting Point** | ~1427 °C | | **Curie Temperature** | ~430 °C | | **Thermal Expansion Coefficient** | 20-300°C: 9.2-9.8 μm/m·°C | | **Thermal Conductivity** | 14.9 W/m·K at 20°C | | **Electrical Resistivity** | 0.49 μΩ·m | --- #### **3. Mechanical Properties** Fittings are typically supplied in conditions optimized for their specific application. * **Tensile Strength:** 510-580 MPa (Annealed) * **Yield Strength:** 270-340 MPa (Annealed) * **Elongation:** 30-40% (Annealed) * **Hardness:** 65-80 HRB (Annealed) --- #### **4. Product Forms & Specific Applications** **Glass Sealing 46 Alloy Fittings** * **Description:** Alloy 46 fittings include a range of precision-engineered components such as connectors, adapters, flanges, and specialized junctions. These are manufactured through machining, forging, or casting processes followed by precise finishing to ensure optimal glass sealing surfaces. Typical sizes range from miniature components for electronics to larger industrial fittings up to several inches in diameter. * **Primary Applications:** * **Vacuum System Components:** Feedthrough adapters, flange connectors, and port fittings for high-vacuum systems * **Electronic Package Headers:** Multi-pin connectors and terminal bases for hybrid circuits and power devices * **Optical System Adapters:** Lens mounts, window frames, and optical port connectors * **Sensor Housings:** Specialized fittings for pressure, temperature, and chemical sensors * **Laboratory Apparatus:** Glass-to-metal transition fittings for specialized laboratory equipment * **Aerospace Components:** Hermetic connectors and adapters for avionics and satellite systems * **Medical Device Connectors:** Implantable device headers and diagnostic equipment fittings --- #### **5. International Standards** Alloy 46 Fittings conform to relevant international standards. | Standard Type | Standard Number | Application | |:---|:---|:---| | **ASTM** | **ASTM F15** | Base material specification | | **ISO** | ISO 9711 | Metallic materials for glass-to-metal seals | | **IEC** | IEC 60680 | Test methods for glass-to-metal seals | | **MIL-STD** | MIL-STD-883 | Test methods for microelectronics | --- #### **6. Manufacturing & Quality Assurance** * **Machining:** CNC machined with controlled tolerances (±0.05 mm typical) * **Surface Finish:** 0.4-1.6 μm Ra for optimal glass adherence * **Heat Treatment:** Stress relief annealing at 750-800°C * **Quality Control:** 100% dimensional inspection, surface quality verification * **Testing:** Helium leak testing available (to 1 × 10⁻⁹ atm·cc/s He) --- **Summary** **Alloy 46 (UNS K94600) Fittings** provide engineered solutions for complex glass-to-metal sealing applications requiring precise mechanical interfaces. Their controlled thermal expansion properties, combined with manufacturability and reliability, make them essential for critical systems in vacuum technology, aerospace, medical devices, and advanced electronics. Compliance with international standards ensures consistent performance and quality in demanding applications where hermetic integrity and thermal cycle reliability are essential.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2490 gallon liquid totes Special package is available on request.