nanocrystalline magnetic cores

• “Too Expensive” Rarely Means “No Budget” — It’s Usually About Risk in B2B Technical Sales

  

  Jul 18, 2025

  In B2B technical sales, price objections often hide a deeper concern: performance risk. Learn how to turn uncertainty into confidence with engineering validation — and close high-value deals without discounts.   Why “Too Expensive” Often Means “Too Risky” In B2B technical sales, hearing “the price is too high” is common. But more often than not, the objection isn’t really about budget — it’s about risk perception. Customers dealing with high-stakes products — such as nanocrystalline cores, inverters, or EV components — need proof, not just a price tag. When performance is uncertain, even a competitive quote won’t secure the deal.   Case Study: Selling Nanocrystalline Cores to a Korean Inverter Manufacturer One of our prospects — a Korean inverter company — praised our nanocrystalline magnetic cores for their excellent technical performance. But their initial feedback was: “We love the performance. But the price is too high.” Rather than offer a cheaper product, we asked a strategic question: “Is the concern really cost — or whether the product’s performance will justify the investment?”   Root Cause: Uncertainty in Thermal Performance The client's engineering team admitted their real concern: they were unsure if our product would meet their thermal threshold in real-world use. This was a classic case of risk-based decision making.   Our Solution: Performance Validation Through Data Instead of discounting, we delivered engineering confidence: Thermal test reports showing performance under load; Fatigue testing data from an existing EV client; A pilot batch for in-system validation and custom testing. By addressing the root concern, we enabled the client to move forward without hesitation.   Result: Purchase Order Without Price Reduction 3 months later, we received the purchase order. What changed? Not our price — but the customer’s confidence in our solution. They needed clarity, not concessions.   Key Takeaway: Sell Confidence, Not Just Products In the world of EV components, inverter cores, and power electronics, your customers are not just evaluating your materials — they’re assessing whether they can trust your product in their mission-critical systems. The smartest way to overcome objections is to: Understand the real source of hesitation; Offer concrete, technical proof; Replace doubt with data. Dongguan JH Amorphous design and export nanocrystalline and amorphous magnetic cores to manufacturers in the EV, inverter, and transformer industries worldwide.Let’s engineer better performance — together.    

  Hot Tags : EV and inverter core suppliers Nanocrystalline Cores nanocrystalline and amorphous magnetic cores amorphous magnetic cores nanocrystalline magnetic cores

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• Tips of how to choose Fe-based Amorphous or Nanocrystalline Magnetic Cores

  

  Jul 07, 2025

    By Senior Applications Engineer, Dongguan JH Amorphous Co., Ltd. Visit: www.amorphousoem.com   Magnetic cores are critical in suppressing EMI, increasing efficiency, and managing energy conversion in power electronics. At Dongguan JH Amorphous, we manufacture both Fe-based Amorphous and Fe-based Nanocrystalline cores. While they appear similar in structure, their magnetic properties, temperature behavior, and application targets differ significantly.   This article provides a side-by-side technical overview to help engineers select the most suitable core material based on design priorities like saturation flux, operating temperature, resistivity, and mechanical strength.   Relationship between Amorphous and Nanocrystalline Alloy   Amorphous Metals have a unique non-crystalline structure and possess excellent physical and magnetic properties that combine strength and hardness with flexibility and toughness.    The key to amorphous proprietary manufacturing process is the rapid-solidification of molten alloy at a rate of approximately one million degrees Celsius per second, forming a disordered atomic structure without long-range crystalline order.   Nanocrystalline cores are developed from amorphous materials by applying controlled annealing, which causes the formation of nanometer-sized grains (10–30 nm) within the amorphous matrix.   Nanocrystalline materials originate from amorphous materials and are formed through heat treatment.   Difference   Part 1: Fe-Based Amorphous Cores   Key Characteristics   Property Fe-Based Amorphous Saturation Flux Density (Bs) 1.56 T Electrical Resistivity 130 μΩ·cm Crystallization Temperature 508 °C Curie Temperature 400 °C Vicker’s Hardness 860 Hv Density 7.18 g/cm³ Initial Permeability(μi) 5,000 Coercivity Hc (A/m) 2.4 Working Temperature -20 ~ 150°C   Advantages   High Saturation Flux: Ideal for applications that need high peak flux without early saturation.   Good Electrical Resistivity: Reduces eddy current loss in mid-frequency range.   Cost-effective: Generally more economical than nanocrystalline alloys.   Stable for ≤100 kHz Applications: Excellent for low-frequency and mid-frequency common-mode chokes and transformers.   Common Applications:   AC line filters (50/60 Hz)   Output chokes in inverters   Power Factor Correction (PFC) input filters   General EMI suppression in household appliances   Example Case: A 10 A common-mode filter in a household inverter passed EMC Class B after replacing ferrite with a JH amorphous toroid (35×20×10 mm). Losses reduced by 20% with minimal temperature rise.   Part 2: Fe-Based Nanocrystalline Cores   A nanocrystalline alloy of a standard iron-boron-silicon alloy, with addition of smaller amounts of copper and niobium, called NANOPERM (Fe–Zr–Nb–Cu–B) alloys.    It is available under names like e.g. Nanoperm(Fe73.5 Cu1 Nb3 Si15.5 B7) registered by Magnetec, Vitroperm registered by VAC, Hitperm and Finemet registered by Hitachi Metals, Ltd., and Metglas is a registered by Metglas®, Inc.     Property Fe-Based Nanocrystalline Saturation Flux Density (Bs) 1.2 T Electrical Resistivity 115 μΩ·cm Crystallization Temperature 510 °C Curie Temperature 570 °C (↑ very high) Vicker’s Hardness 960 Hv Density 7.2 g/cm³ Initial Permeability(μi) 80,000 Coercivity Hc (A/m) 1.2 Working Temperature -40 ~ 140°C   Advantages Extremely High Initial Permeability (µi): Up to 80,00~120,000, significantly better than amorphous or ferrite.   Lower Core Loss: Particularly effective in 20 kHz–1 MHz range.   High Thermal Stability: Suitable for continuous operation at elevated temperatures (up to 140 °C).   Ideal for EMI Suppression: Excellent for fast-switching SiC/GaN circuits where broadband noise filtering is critical.   Common Applications High-frequency EMI chokes (20 kHz–100 MHz)   EV on-board charger filters   Solar inverter output stages   SMPS and server power supplies   Differential-mode and common-mode chokes in automotive/rail/aerospace/marine   Example Case: In a 20 kW EV charger filter, the replacement of ferrite with a nanocrystalline JH-60×35×15 core resulted in a 30% loss reduction, 8 dB EMI improvement, and a 25 °C lower core temperature under full load.   Material Selection Guide   Application Type Recommended Core Notes Low-frequency EMI Filter (≤100 kHz) Fe-based Amorphous Cost-effective, stable, suitable for Class B filters High-frequency EMI Filter (100 kHz+) Fe-based Nanocrystalline Superior suppression for fast-switching applications Harsh Thermal Environments Nanocrystalline Higher Curie temperature and thermal endurance High Saturation Flux Requirements Amorphous Bs = 1.56 T for larger flux window     When choosing between amorphous and nanocrystalline magnetic cores, it's essential to match your design frequency, thermal limits, and EMI suppression goals with the right material.   Use amorphous when budget, space, and low-frequency performance are key.   Choose nanocrystalline when performance, high-frequency stability, and thermal resilience are critical.   At Dongguan JH Amorphous, we offer full OEM customization, quick sample delivery, and application engineering support.   Learn more: www.amorphousoem.com  

  Hot Tags : Key Differences in Magnetic Properties Between Amorphous and Nanocrystalline Cores Thermal and Structural Advantages of Nanocrystalline Alloys in Power Electronics nanocrystalline magnetic cores Nanocrystalline Cores for High-frequency EMI Suppression Amorphous Cores in Low-frequency Power Applications Fe-based Amorphous Core

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