How to compare NdFeB magnet cost per kg

Identify what the quoted kilogram represents

Raw-material inputs, alloy or magnet blanks, and finished coated magnets are different purchase objects. Their prices cannot be combined into a meaningful “NdFeB average” without a defined basis. A finished part includes the material and the work needed to meet its drawing, magnetic, surface and delivery requirements.^{[1] [4]}

The Alliance raw-material chart ends in 2019. It illustrates historical input-price movement; it cannot answer a current finished-magnet price request. A supplier's dated example or trend article likewise needs its date and product basis retained. Retail item prices also belong to a different quantity and service context from an industrial bulk quote.^{[2] [3] [4] [5]}

For a current purchase, request a dated quotation matching your part and quantity. Historical price comparisons need records for the relevant period on the same basis.

Normalize the offers to the same weight basis

Before converting prices, identify the part and the definition of its mass. Small or intricate parts can contain more processing cost per kilogram than a simple blank; a finished-part kilogram price is therefore more than an alloy price.^{[1] [3] [4]}

Per piece versus per kilogram

Obtain net mass per finished part. Use the same drawing revision, grade and finish in both offers before converting.

Net part mass versus shipment weight

Separate magnets from spacers, steel cups, cartons and pallets. For an assembly, state exactly which components the price and weight include.

Part price versus delivered total

Keep separately charged inspection, tooling or freight visible. Compare both the part rate and the total for the same order quantity.

Use the datasheet guide to align material identity. The quotation page covers the broader cost factors and a finished-part request; the bulk purchasing checklist covers quantity and repeat supply.

Convert per-piece and per-kg quotes on the same basis

If the price per piece is p and the agreed net mass per piece is m kilograms, the equivalent price per kilogram is p ÷ m. Conversely, a per-kilogram rate r multiplied by m gives the corresponding material or part charge per piece on that same basis.

Equivalent price/kg = price/piece ÷ net kg/piece

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Keep the denominator clear

Divide price per piece by net kilograms per piece. Identify freight separately. Changing the unit cannot make different parts or quotation scopes comparable.

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If mass is recorded in grams, convert it first: m = grams per piece ÷ 1,000. The units then cancel as currency/piece divided by kg/piece. Do not use shipment weight including cartons, spacers or pallets as the part's net mass.

Keep separately charged work outside the conversion until you know whether it is included in both offers. For a full order comparison, use the total price for the same quantity and scope. The arithmetic changes the unit; it cannot correct a different specification or an unknown fee.

The magnet mass calculator can estimate simple solid geometry for an early check. Use the mass definition agreed in the quotation for the final comparison. Holes, recesses, chamfers, material density and assembly components can make a simple estimate differ from the quoted part.

Have a sintered magnet specification? Send the drawing, grade if known, quantity and destination to request a part-specific quotation discussion. No market average or current price list is implied by the formulas here.