Short answer: Electrical steel is supplied mainly as full coil (0.10–0.65 mm) and as sheet or strip cut to length. Coils are slit to the lamination width; sheets are stamped or laser-cut into rotor and stator laminations. Standards include ASTM A876 / EN 10107 (GOES), ASTM A677 (NOES), and JIS C2552 (strip). An insulating coating is applied to every form to block eddy currents.
At a Glance
Forms of Electrical Steel
Electrical steel starts as hot-rolled band and is cold-reduced to thin gauge, then annealed and coated. The chart above summarizes the forms buyers receive. Full coil is the default for high-volume stamping; plaat suits cut parts and prototypes; strip is tight-tolerance material for precision laminations; bonderized (C5) sheet is used where laminations are bonded into a solid stack.
Thickness and Tolerance
Thinner gauges lower loss but cost more and punch harder. GOES is usually 0.23–0.35 mm; NOES spans 0.20–0.65 mm. State the nominal thickness and tolerance (often ±0.01–0.02 mm for strip) so your laminations stack to the designed core dimension.
Coatings and Insulation
Every electrical-steel form carries an insulating coating (C3–C6, or bondable C5) that resists eddy currents between laminations and adds a stable surface for cutting. Specify the coating class and whether you need laser-scribable or fully organic-free material for high-temperature annealing.
How to Specify a Quote
- Type: GOES (CRGO) or NOES (CRNGO).
- Grade & thickness: e.g. 27QG100, 0.50 mm 50W600.
- Coating class: C3–C6 / C5 bondable.
- Form & width: coil (slit to mm) or sheet (length × width).
- Quantity & certs: with or without mill-test report.
Sourcing Coil & Sheet from HXSCO
HXSCO supplies electrical steel coil and sheet in both grain-oriented and non-grain-oriented grades — see our grain-oriented en non-grain-oriented product pages. Send your specification and we will slit, cut, coat-check, and quote with mill certificates.
Veelgestelde vragen
Mainly full coil and sheet, plus tight-tolerance strip and bonderized (C5) sheet for bonded lamination stacks.
GOES typically 0.23–0.35 mm; NOES 0.20–0.65 mm. Thinner gauges lower loss but cost more.
Common standards are ASTM A876 / EN 10107 (GOES), ASTM A677 (NOES), and JIS C2552 (strip).
An insulating coating blocks eddy currents between laminations, lowering loss, and provides a stable surface for cutting or bonding.
Give the type (GOES/NOES), grade, thickness, coating class, form/width, quantity, and whether you need mill-test certificates.
Ready to source electrical steel?
Tell us the type (GOES or NOES), grade, thickness, coating class, width/length, and quantity. HXSCO will reply with a competitive quote, lead time, and mill-test options.
Request a QuoteWhy Transformer & Motor Makers Source Electrical Steel from HXSCO
HXSCO levert zowel grain-oriented electrical steel (GOES / CRGO) en non-grain-oriented electrical steel (NOES / CRNGO) in coil and sheet for transformer, motor, and generator manufacturers. We stock standard grades (23Q/27Q/30Q GOES, 35W/50W/65W NOES), supply with insulating coating and mill-test certificates, and cut or slit to your lamination width. Contact HXSCO for a project-specific quote or grade recommendation.