Cast AlNiCo magnets are produced by precision investment casting, allowing complex 3D shapes such as horseshoe, U-shape, multi-pole and instrument geometries that other magnet materials cannot form economically.
They are widely used in instruments, sensors, magnetic tools and equipment exposed to high temperature. Cast AlNiCo offers the highest output of the AlNiCo family (up to about 13.5 MGOe).
Key Specifications
| Specification | Value |
|---|---|
| Grades | LNG34, LNG37, LNG44, LNG52, LNGT56 typical |
| Shapes | Horseshoe, U-shape, complex cast contours |
| Max working temp | Up to 550 °C |
| Temperature coefficient | About -0.02 %/°C (lowest of all magnets) |
| Magnetization | Custom orientation possible via casting |
| Applications | Instruments, sensors, tools, high-temp equipment |
All magnets are produced to order. Please provide grade, dimension (or drawing), magnetization direction, coating and quantity for quotation. Email sales@polemagnet.com or use the inquiry form — we reply within 24 hours.
FAQ
Cast AlNiCo Magnets — FAQ
Can cast AlNiCo produce complex shapes?
Yes. Casting is the strength of AlNiCo — horseshoe, U-shaped, multi-pole and intricate contours can be cast to near-net shape, saving machining.
How stable is AlNiCo flux over temperature?
AlNiCo has the lowest reversible temperature coefficient of all permanent magnets (about -0.02 %/°C), so flux remains highly stable from -40 °C to over 500 °C.
Do you provide free samples for testing?
Yes, sample orders are welcome. Send your drawing or specification together with the intended application so our engineers can recommend the correct grade, magnetization direction and coating before we prepare samples.
Can the factory produce to my drawing with special tolerances?
Yes. We machine, grind and inspect to customer drawing tolerances. For sintered NdFeB the standard machining tolerance is ±0.05 mm and can be tightened to ±0.02 mm with diamond grinding where the geometry allows.
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Need Custom Magnets for Your Project?
Send your drawing, grade, magnetization direction and quantity. Our engineers will reply with a quotation within 24 hours.