Radiometal 4550
UNS K93500
Description
Radiometal 4550 is a soft magnetic alloy consisting of 45% nickel, balance iron. It has excellent permeability with high saturation flux density. This alloy is ideal for sensitive relays that need to respond to very weak currents. It is also widely used in transformers, chokes, and special motors where the properties of ferrosilicon do not provide the desired magnetic properties.
Chemical Component
| Ni | Fe | C | Mn | Si |
|---|---|---|---|---|
| 45.50% | Balance | 0.025% | 0.30% | 0.25% |
Material Forms
Alfa Chemistry offers Radiometal 4550 in the form of Round Bar.
Basic Information
| Items | Radiometal 4550 |
|---|---|
| Catalog | ACMA-Ni-A005 |
| Density | 8.250 g/cm3 |
| Tensile Strength (as supplied condition) | 470 MPa |
| Hardness (as supplied condition) | 130 HV |
Minimum Magnetic Properties
- After final heat treatment
| Magnetising Field, H(A/m) | 16 | 40 | 800 | 1600 |
| Flux Density, B(T) | 0.50 | 0.90 | 1.4 | 1 |
Additional Properties
Forming & Machining: Nickel-iron alloys are austenitic in structure and are therefore readily formable by bending, stretching and deep drawing. Machining is not difficult but it must be recognised that this type of material work hardens readily and care needs to be taken over the choice of tool geometry and material feeds, speeds and cutting fluids. We are able to provide recommendations.
Applications
Radiometal 4550 can be used in a variety of applications, including:
- Toroidal cores and laminations
- Telecommunications transformers
- High performance motors
- Protection relays
- Servo valves and actuators
- Gas valves
- Missile systems
- Watch movements
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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Alfa Chemistry is a manufacturer of standard & custom specialty metals & alloys. We stock a wide variety of alloys in different shapes and specifications. If you can't find the product or specification you need, please contact us directly.
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