Products · Ultra-thin
Ultra-Thin Silicon Steel — High-Frequency, High-Speed Cores
Gauges from 0.05 to 0.20 mm, in both grain-oriented and non-oriented structures, for transformers, reactors and motors where thinner laminations cut eddy-current loss as frequency or rotor speed rises. Custom slitting to your width.
Two structures, one gauge range
Choose grain-oriented or non-oriented
Ultra-thin is a gauge, not a structure — pick grain-oriented for transformer cores where flux runs one way, or non-oriented for rotating motors and generators.
Grain-oriented
Ultra-Thin CRGO
Down to 0.10 mm, for high-frequency transformers and reactors where flux runs one way.
- Thickness0.10–0.20 mm
- Frequency400 Hz – high-freq
- GradeGT-050 · GT-100
Non-oriented
Ultra-Thin CRNGO
Down to 0.05 mm, for high-speed and high-frequency motors where the field rotates.
- Thickness0.05–0.20 mm
- Core loss P1.0/400≤ 11 W/kg
- Induction B50≥ 1.60 T
Side by side
Which structure fits your application
A quick comparison to help you self-select before you send an enquiry.
| Property | Ultra-Thin CRGO | Ultra-Thin CRNGO |
|---|---|---|
| Thickness | 0.10–0.20 mm | 0.05–0.20 mm |
| Grain structure | Aligned (anisotropic) | Random (isotropic) |
| Typical grades | GT-050 · GT-100 | 0.10mm NO · 0.15mm NO |
| Best for | HF transformers & reactors | High-speed / HF motors |
Not sure which gauge you need? Send your operating frequency or motor speed and we’ll recommend a thickness — request a quote →
By application
Where ultra-thin gauges pay off
High-frequency transformers
Ultra-thin CRGO cuts eddy-current loss above 400 Hz.
Explore →EV & high-speed motors
Ultra-thin CRNGO for high-RPM rotors and stators.
Explore →Reactors
Thin-gauge CRGO for compact, low-loss reactor cores.
Explore →Drones & servo motors
Ultra-thin CRNGO for small, high-frequency drive motors.
Explore →How we work
From enquiry to your dock
A simple path from spec to delivery, built for overseas buyers.
Send your spec
Structure, thickness, width and frequency — or upload a drawing.
Quote in 24h
Pricing and availability within one business day.
Free samples
Test core loss and stampability, usually within a week.
Production & QC
Rolled, slit and tested to grade, with a mill certificate.
Export delivery
Moisture-proof packing and ocean freight to your port.
FAQ
Sourcing ultra-thin silicon steel from us
What counts as “ultra-thin” silicon steel?
Gauges from 0.05 to 0.20mm — thinner than our standard CRGO (0.23–0.35mm) and standard CRNGO (0.35–0.65mm) ranges. Thinner laminations cut eddy-current loss as frequency or rotor speed rises.
Should I choose grain-oriented or non-oriented ultra-thin steel?
Grain-oriented (CRGO) suits transformers and reactors where flux runs one way. Non-oriented (CRNGO) suits motors and generators where the field rotates. Send us your application and we’ll confirm.
What’s the minimum order quantity?
Ultra-thin gauges are typically made-to-order with a higher MOQ than standard thicknesses. Tell us your target volume and we’ll confirm what’s workable.
How fast can you quote and ship?
Quotes come within 24 hours. Ultra-thin gauges are made-to-order and typically take a few weeks; common grain-oriented and non-oriented standard gauges may ship faster.
Do you provide samples?
Yes — free samples are usually ready within about a week, so you can test core loss and stampability before committing.
Can you cut to my width?
Yes — precision slitting to width is standard on ultra-thin gauges, with tight tolerance for stamping and winding.
Which standards and certifications do you hold?
Production runs under ISO 9001 and IATF 16949, with material to GB, EN, JIS or AISI grades and RoHS / REACH compliance. A mill test certificate ships with every order.
Why buyers choose Zhongxin
Mill-grade material, export-ready service
Wuxi Zhongxin Special Steel Co., Ltd. is a Chinese manufacturer and exporter of grain-oriented, non-oriented and ultra-thin silicon steel, serving transformer, reactor and motor makers across Europe, the Americas, Asia and beyond.
Send your spec — get a quote in 24 hours
Share structure, thickness, width and frequency, or upload a drawing. Free samples available.