Alloy 52 Plate – FeNi52 Controlled Expansion Alloy Plate
Product Short Description
Alloy 52 Plate, also known as FeNi52 Controlled Expansion Alloy Plate, is a nickel-iron precision alloy designed for applications requiring controlled thermal expansion, stable dimensional performance and reliable sealing behavior. With approximately 52% nickel content, Alloy 52 provides a higher thermal expansion coefficient than Alloy 42, Alloy 46 and Alloy 48, making it suitable for matching selected glass and ceramic materials in hermetic sealing applications.
SASA ALLOY supplies Alloy 52 plates in customized thickness, width, length and surface condition according to customer requirements. Products can be supplied with chemical composition analysis, mechanical testing, dimensional inspection, PMI testing, surface inspection, EN 10204 3.1 material certificate and full heat number traceability.
- Product Name: Alloy 52 Plate – FeNi52 Controlled Expansion Alloy Plate
- Material Grade: Alloy 52 / FeNi52 / 52Ni-Fe
- Product Type: Nickel-Iron Controlled Expansion Alloy Plate
- Main Feature: Controlled thermal expansion and reliable dimensional stability
- Applications: Glass sealing, ceramic sealing, electronic components, vacuum devices and precision instruments
Product Parameters
| Item | Specification |
|---|---|
| Product Name | Alloy 52 Plate – FeNi52 Controlled Expansion Alloy Plate |
| Material Grade | Alloy 52 / FeNi52 / 52Ni-Fe |
| Material Type | Nickel-Iron Controlled Expansion Alloy |
| Product Form | Plate, Sheet, Strip, Flat Bar, Cut Plate, Machined Plate |
| Thickness | 0.5 mm – 100 mm or customized |
| Width | 100 mm – 2000 mm or customized |
| Length | 500 mm – 6000 mm or cut to size |
| Surface Condition | Hot Rolled, Cold Rolled, Pickled, Polished, Ground, Machined |
| Standard | ASTM, UNS, EN, DIN, JIS, GB or customer specification |
| Inspection | Chemical Analysis, Mechanical Test, PMI Test, Dimensional Inspection, Surface Inspection |
| Certificate | EN 10204 3.1 Material Certificate available |
| Processing Service | Cutting, Shearing, Grinding, CNC Machining, Custom Size Processing |
Chemical Composition
The chemical composition of Alloy 52 Plate is controlled to provide stable thermal expansion performance and reliable sealing behavior. The following values are for general reference only. Final composition should be confirmed according to the applicable standard, purchase order and mill test certificate.
| Element | Ni | Fe | C | Mn | Si | P | S | Co | Cu | Cr |
|---|---|---|---|---|---|---|---|---|---|---|
| Content % | 51.0 – 53.0 | Balance | ≤0.05 | ≤0.80 | ≤0.30 | ≤0.020 | ≤0.020 | ≤0.50 | ≤0.30 | ≤0.25 |
Mechanical Properties
Mechanical properties of Alloy 52 Plate may vary depending on thickness, production process, heat treatment condition and final application requirements. SASA ALLOY can provide mechanical test reports according to customer specifications.
| Condition | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Annealed / Typical | 450 – 650 MPa | 240 – 350 MPa | 25% min | According to condition | Approx. 8.2 g/cm³ |
| Cold Worked / Custom | According to order | According to order | According to order | According to order | Approx. 8.2 g/cm³ |
Note: For controlled expansion alloy applications, thermal expansion behavior, dimensional stability, surface quality and sealing compatibility are often more important than conventional strength values.
Common Size Table
| Thickness | Width | Length | Surface | Availability |
|---|---|---|---|---|
| 0.5 – 3.0 mm | 100 – 1000 mm | 500 – 3000 mm | Cold Rolled / Pickled | Stock / Production |
| 3.0 – 10 mm | 300 – 1500 mm | 1000 – 4000 mm | Hot Rolled / Pickled | Stock / Production |
| 10 – 30 mm | 500 – 2000 mm | 1000 – 6000 mm | Hot Rolled / Ground | Production |
| 30 – 100 mm | According to order | According to order | Machined / Ground | Made to Order |
Different Specifications Comparison
| Type | Thickness Range | Surface Condition | Typical Use |
|---|---|---|---|
| Alloy 52 Sheet | 0.5 – 6 mm | Cold Rolled / Pickled / Polished | Electronic parts, sealing components, relay parts and precision small parts |
| Alloy 52 Plate | 6 – 100 mm | Hot Rolled / Ground / Machined | Glass sealing parts, ceramic sealing components, vacuum equipment and precision tooling |
| Alloy 52 Cut Plate | Customized | Cut / Ground / Machined | Custom machining blanks and precision components |
| Alloy 52 Precision Plate | According to drawing | Ground / CNC Machined | Hermetic sealing assemblies, optical parts and electronic components |
Equivalent Standards and International Names
Alloy 52 Plate is known by different names in international markets. Customers may search for Alloy 52, FeNi52, 52Ni-Fe alloy plate, glass sealing alloy plate or controlled expansion alloy plate.
| Country / Standard | Common Name | Equivalent Grade |
|---|---|---|
| Commercial Name | Alloy 52 | Nickel-Iron Controlled Expansion Alloy |
| Fe-Ni System | FeNi52 | 52Ni-Fe Alloy |
| Application Name | Glass Sealing Alloy | Controlled Expansion Alloy |
| China / GB Reference | 4J52 | FeNi52 Equivalent |
| Industrial Name | Low Expansion Alloy | Precision Alloy Material |
Production Process Flow
The production process of Alloy 52 Plate requires strict control of chemical composition, melting quality, rolling condition, heat treatment and dimensional accuracy to ensure stable controlled expansion performance and reliable sealing compatibility.
| Process Step | Description | Quality Control Point |
|---|---|---|
| Raw Material Selection | Select qualified nickel and iron raw materials | Raw material certificate and traceability |
| Melting | Control alloy composition and impurity elements | Chemical composition analysis |
| Rolling | Hot rolling or cold rolling according to thickness | Thickness, flatness and surface control |
| Annealing | Heat treatment to improve structure and dimensional stability | Temperature and holding time control |
| Inspection | Final inspection before shipment | Dimension, surface, PMI, certificate review |
Product Inspection
1. Chemical Composition Inspection
Chemical composition analysis is performed to verify nickel content and impurity control. For Alloy 52 Plate, stable nickel-iron composition is important for controlled expansion performance and material consistency.
2. Mechanical Properties Testing
Tensile strength, yield strength, elongation and hardness can be tested according to customer requirements. Mechanical testing helps confirm material reliability for precision industrial applications.
3. Dimensional Inspection
Thickness, width, length, flatness and tolerance are inspected before shipment to ensure that the Alloy 52 Plate meets the purchase order or drawing requirements.
4. PMI Testing and Traceability
PMI testing can be used to verify material grade and prevent material mix-up. Heat number traceability and EN 10204 3.1 material certificate can be supplied with the shipment.
Product Packaging
SASA ALLOY provides export-grade packaging for Alloy 52 plates to protect the material during sea, air and land transportation.
- Protective Film: Applied to polished or machined surfaces to reduce scratches.
- Waterproof Wrapping: Used to protect plates from moisture during transport.
- Wooden Case Packaging: Suitable for cut plates and precision machined plates.
- Pallet Packing: Suitable for heavy plates and batch shipments.
- Clear Marking: Grade, heat number, size, quantity and customer PO number can be marked on labels.
Applications
Alloy 52 Plate is widely used where controlled thermal expansion and reliable dimensional stability are required. It is especially suitable for glass-to-metal sealing, ceramic sealing and precision electronic applications.
| Industry | Typical Applications | Why Alloy 52 Is Used |
|---|---|---|
| Electronics | Connectors, electronic packaging parts, relay components | Controlled expansion and stable sealing performance |
| Glass Sealing | Glass-to-metal sealing components, electronic tubes, vacuum devices | Thermal expansion compatible with selected glass materials |
| Ceramic Sealing | Ceramic-to-metal sealing parts and precision assemblies | Stable dimensional control and reliable sealing performance |
| Optical Equipment | Optical frames, laser parts, precision holders | Maintains shape under temperature changes |
| Precision Instruments | Measuring devices, reference components, support plates | Controlled expansion and reliable dimensional stability |
Why Choose SASA ALLOY?
- Professional supplier of Alloy 52 / FeNi52 controlled expansion alloy plate
- Customized thickness, width, length and cut-to-size service available
- Support for ASTM, UNS, EN, DIN, JIS, GB and customer specifications
- Material traceability with heat number control
- EN 10204 3.1 material certificate available
- Chemical analysis, mechanical testing, PMI testing and dimensional inspection support
- Export packaging suitable for international transportation
- Suitable for glass sealing, ceramic sealing, electronic components, vacuum devices and precision instrument applications
FAQ
What is Alloy 52 Plate?
Alloy 52 Plate is a nickel-iron controlled expansion alloy plate containing approximately 52% nickel. It is commonly used for glass-to-metal sealing, ceramic sealing, electronic components and precision parts.
Is Alloy 52 the same as FeNi52?
Yes. Alloy 52 is also commonly known as FeNi52, 52Ni-Fe alloy or 4J52 in different markets and standards.
Can SASA ALLOY provide custom size Alloy 52 Plate?
Yes. SASA ALLOY can supply Alloy 52 Plate in customized thickness, width, length, cut-to-size plate and machined plate according to customer requirements.
What certificate can be supplied with Alloy 52 Plate?
EN 10204 3.1 material certificate can be supplied. Chemical composition, mechanical properties, heat number and traceability information can be provided according to order requirements.
What are the main applications of Alloy 52 Plate?
Alloy 52 Plate is mainly used for glass sealing, ceramic sealing, electronic components, vacuum devices, relays, optical equipment and precision instrument parts.
Contact Us
If you are looking for Alloy 52 Plate, FeNi52 Plate or customized controlled expansion alloy materials, please contact SASA ALLOY with your required grade, size, standard, surface condition, quantity and inspection requirements. Our team can provide professional material solutions for precision alloy applications.
