Spot pricing on Made-in-China.com on 2026-05-10 lists sintered NdFeB stock magnets at US$0.10-10.00 per piece at 500-piece MOQ from Hangzhou Lifeng Import & Export, with N52-class blocks from Hawell Magnetics (Ningbo) at US$32.00-38.00 per piece at 100-piece MOQ [S1]. Countersunk variants for direct mechanical fastening sit at US$0.01-2.50 per piece at 1-100 piece MOQ from the same Hawell line [S6].
The wide per-piece spread is structural, not market noise: it reflects grade (N35 to N52 and beyond), dimensional tolerance, surface coating (Ni-Cu-Ni, epoxy, Zn), and whether the magnet is anisotropic sintered, bonded, or hot-pressed. Soft magnetic cores (silicon steel, ferrite, amorphous ribbon) and hard permanent magnets answer completely different design questions, and the MAGnetic materials overview treats the two families separately because buyers usually commit to one stack at the BOM level [S2].
Price Bands by Form Factor and Grade
Industrial buyers typically see three pricing tiers on sintered NdFeB in mid-2026. Entry-level commodity discs and blocks in N35-N42: US$0.10-1.50 per piece at 500-1,000 piece MOQ [S1]. Mid-grade N42-N52 with tighter ±0.05 mm tolerance and Ni-Cu-Ni coating: US$0.40-3.00 per piece at 100 piece MOQ [S1]. High-energy N52-N54 or UH-grade parts (often used in EV traction motors, magnetic drive pumps, and linear guide braking): US$20-38 per piece at 100 piece MOQ [S1].
Countersunk mounting magnets, common in fixtures, sensors and magnetic chucks, are quoted US$0.01-2.50 per piece at 1-100 piece MOQ depending on diameter and pull force [S6]. Temperature-with-magnet assemblies (sensor-housing magnets rated for elevated service) trade at US$0.20-1.00 per piece at 100 piece MOQ from Ningbo Ketai, climbing to US$10-100 per piece at 2 piece MOQ for high-temperature grades from Chengdu Ascend [S5].
What Drives the Cost: Material, Process, Tolerance
NdFeB cost is dominated by neodymium, praseodymium, dysprosium and terbium rare-earth content, and dysprosium and terbium additions for high-temperature grades can multiply raw-material cost 2-4x relative to commodity NdFeB. Process-wise, sintered parts are higher energy product (BHmax) and more expensive per kg than bonded NdFeB; bonded ferrite and bonded NdFeB compression mouldings trade energy density for tight tolerance and complex shapes at lower unit cost [S2].
Tolerance and coating stack on top of raw material. Standard sintered parts ship at ±0.1 mm; precision-ground faces add 20-40% to unit cost. Coatings: Ni-Cu-Ni triple plate is the default and adds the least cost; epoxy and Zn cost less, parylene and gold for medical/semiconductor use add more. Specification work that fixes grade, tolerance and coating up front avoids the premium pricing that appears when buyers order "best available" without constraint.
Soft Magnetic Cores vs Hard Permanent Magnets
The fundamental split is function, not price. Soft magnetic cores — silicon steel, ferrite, powder iron, amorphous and nanocrystalline ribbon — are magnetised only while current flows in a winding; they are the working medium in transformers, inductors and motor stators [S2]. Hard permanent magnets (NdFeB, SmCo, AlNiCo, hard ferrite) hold flux without external energy and are the working medium in rotor assemblies, magnetic drive pump couplings, magnetic level gauge floats and magnetic sensor biasing.
Cost benchmarks diverge sharply. Cold-rolled grain-oriented silicon steel at 0.23-0.35 mm is priced per kg in transformer-steel territory and amortised over motor or transformer life; sintered NdFeB is priced per piece of finished magnet and amortised over the same service. SmCo, used where temperature stability above 150 °C or corrosion resistance is mandatory, sits at a significant premium to NdFeB and is sourced separately. AlNiCo and hard ferrite remain the lowest-cost permanent options for moderate-energy-density applications [S2].
Specification Levers That Move Unit Price
Five levers govern the quote. Grade (N35 to N52, then UH/EH/AH series) — each step typically adds 10-25% to unit cost. Operating temperature — Dy/Tb-bearing grades for 150-200 °C service cost 30-80% more than standard NdFeB. Tolerance — ±0.1 mm is standard, ±0.05 mm adds 15-30%, ±0.02 mm on ground faces adds more. Coating — Ni-Cu-Ni baseline, then epoxy, Zn, gold, parylene in ascending order. MOQ — moving from 100-piece to 1,000-piece MOQ on commodity parts commonly drops unit price 20-40% [S1][S6].
Coercivity (Hcj) and remanence (Br) spec'd in the drawing, not the marketing page, are what the factory actually quotes against. Buyers who send a spec sheet that names Hcj in kA/m and Br in mT get tighter and more reproducible quotes than those who send "strong magnet, N52 preferred".
China Sourcing Reality in 2026
Zhejiang — Hangzhou, Ningbo — and Sichuan (Chengdu Ascend) concentrate NdFeB and bonded-magnet production for export. Hawell Magnetics (Ningbo), Hangzhou Lifeng Import & Export, Hangzhou SDM Magnetics and Ningbo Ketai Magnetic Material are recurring supplier names on Made-in-China listings with published price ranges and MOQ in mid-2026 [S1][S3][S5][S6].
Audit posture matters. Audited suppliers with ISO 9001:2015 and, in some cases, ISO 14001 and ISO 45001 certification are the more defensible spec-in sources [S4]. For buyers integrating magnets into assemblies that will face ATEX/IECEx hazardous-area review, the magnet itself rarely carries the certification — the assembly does — so the magnet supplier audit is only one input. Adjacent categories such as linear guide braking magnets and crossed-roller guide retention magnets follow the same Zhejiang supply chain pattern with their own grade and tolerance conventions.
Limitations and Failure Modes to Budget For
Three failure modes are common and cheap to prevent on paper, expensive in the field. Thermal demagnetisation — standard NdFeB begins irreversible flux loss near 80 °C, high-temperature grades push this to 150-200 °C; over-specifying the operating temperature is the cheapest insurance [S2]. Corrosion — NdFeB corrodes in humid or salt-fog environments without coating; Ni-Cu-Ni plus a sealed housing is the typical defence. Mechanical chipping — sintered NdFeB is brittle and chips at edges; corners should be specified with chamfers and protective sleeves in sliding applications.
Recycled and sub-grade material is a real risk in the lower-cost tier. Smuggled or undeclared Dy/Tb content shows up as parts that pass room-temperature flux tests but collapse at 100 °C. Specifying Hcj, Br, and a temperature cycle test in the purchase contract is the practical mitigation, since the cost difference between an honest supplier and a corner-cutter is rarely more than 10-15% on unit price.
Comparison: Cost Levers Across the Main Magnet Families
Decision matrix for a process engineer choosing a permanent magnet family in mid-2026. Energy density (BHmax): NdFeB highest, then SmCo, then AlNiCo, then hard ferrite. Maximum service temperature: SmCo (300 °C class) > high-temp NdFeB (~200 °C) > AlNiCo (~500 °C, low coercivity) > hard ferrite. Unit cost: hard ferrite and bonded NdFeB lowest, sintered NdFeB mid, SmCo highest. Corrosion resistance: SmCo best, ferrite good, NdFeB worst without coating. Machinability: AlNiCo best, ferrite good, NdFeB and SmCo require grinding [S2].
For magnetic drive pumps, magnetic level gauges, and magnetic sensor biasing in general process service, sintered NdFeB with Ni-Cu-Ni coating in N35-N42 grade remains the default specification because it offers the best energy density per dollar. The application — not the magnet catalogue — is the right starting point for the spec.
Trackable signals for the rest of 2026: rare-earth oxide spot prices out of Inner Mongolia and Sichuan (NdPr oxide, Dy2O3, Tb4O7), and any new export-control guidance out of China's Ministry of Commerce on mid-to-heavy rare earths. These two move NdFeB unit cost faster than any other lever and are the variables worth watching before locking a Q4 procurement contract. Buyers cross-checking on adjacent commodity lines will find the same dynamic — for example the sourcing levers on industrial valves follow similar China-hub, audit-driven logic.