Alloy SteelCoil
Overview
Alloy 52 (UNS N14052 / ASTM F30) is a 50.5% nickel-iron controlled-expansion alloy widely used for glass-to-metal seals in electronic and electrical components. With a nickel content of approximately 50.5%, it provides a coefficient of thermal expansion closely matched to soft (lead) glasses over a broad temperature range. Alloy 52 roll wire is supplied in coil form (spooled or coiled length), drawn to precise diameters, and used for sealing pins, lead wires, and stem press contacts in lamps, vacuum tubes, relays, and semiconductor packages.
Size Range
- Dia.: 0.05 – 6.0mm(0.002 – 0.236in)
- Coil weight:1 – 50 kg
- Spool type:Plastic / wooden / returnable
Grade Specification
| System | Value |
|---|---|
| 🇺🇸 UNS | N14052 |
| 🇪🇺 EN | EN 1.3922 |
| 🇩🇪 DIN | 1.3922 / NiFe50 |
Chemical Composition
| Element | Value |
|---|---|
| C | ≤ 0.05 |
| Mn | ≤ 0.60 |
| Si | ≤ 0.30 |
| P | ≤ 0.020 |
| S | ≤ 0.020 |
| Al | ≤ 0.10 |
| Cr | ≤ 0.25 |
| Co | ≤ 0.50 |
| Cu | ≤ 0.20 |
| Mo | ≤ 0.20 |
| Mg | ≤ 0.10 |
| Ti | ≤ 0.10 |
| Ni | 50.0 – 51.0 |
| Fe | Remainder |
Mechanical Properties
| productCenter.property | Value |
|---|---|
| Tensile Strength (MPa) | 550 – 700 |
| Yield Strength (MPa, 0.2% offset) | 280 – 380 |
| Elongation (%) | 25 – 35 |
| Reduction of Area (%) | 65 – 80 |
Physical Properties
| Property | Unit | Value |
|---|---|---|
| Density (g/cm³) | g/cm³ | 8.24 |
| Melting Range (°C) | °C | 1,440 – 1,460 |
| Solidus Temperature (°C) | - | 1,440 |
| Liquidus Temperature (°C) | - | 1,460 |
| Curie Temperature (°C) | - | 500 |
| Specific Heat (J/kg·K, 25°C) | J/kg·K | 500 |
| Thermal Conductivity (W/m·K, 25°C) | W/m·K | 13.4 |
| Electrical Resistivity (nΩ·m, 25°C) | μΩ·cm | 430 |
Applications
- Electronics & Semiconductors
- Lamps & Lighting
- Vacuum Electronics
- Electrical Components
- Automotive
- Aerospace & Defense
- Medical Devices