CRNO Silicon Steel Coil for Motors & Generators

CRNO Coil

Full‑range grades covering general‑purpose, low‑loss and ultra‑thin high‑frequency variants
Precision slitting 5‑1240 mm, tight width tolerance ±0.005 mm
Multiple coating options including chrome‑free eco‑friendly insulation coatings
Complete processing service for motor lamination and generator core manufacturing

Product Overview

CRNO Silicon Steel Coil (Cold-Rolled Non-Oriented Silicon Steel Coil) is a non-grain-oriented electrical steel designed for rotating magnetic cores in motors, generators and power conversion equipment. The product range covers classic Chinese WW grades, Baosteel B+A grades, Japanese JIS grades, American ASTM A677 grades and applicable EN standards, providing material options for different motor and generator manufacturing requirements.

The available thickness range includes 0.10, 0.12, 0.15, 0.20 and 0.25mm ultra-thin gauges, as well as 0.30, 0.35, 0.50 and 0.65mm standard gauges. The 0.65mm specification is specifically indicated for large generator applications. Original mother coil width is 1000–1250mm, while precision longitudinal slitting supports strip widths from 5–1240mm with a stated ±0.005mm width tolerance.

CRNO Coil can be supplied with single-side or double-side inorganic insulation coatings, including a RoHS-compliant chrome-free environmental-friendly coating. These coating options are intended to support inter-lamination insulation requirements for motor stacking while also providing rust-protection functionality.

For manufacturers requiring further processing, the material can be supplied with flattening, motor-lamination stamping, laser cutting and stress-relief annealing. Typical applications include industrial motors, household appliance motors, EV drive motors, diesel generators, wind turbines, pumped-storage generators and PCS energy-storage converter cores.

CRNO Coil

Chemical & Mechanical Property Snapshot

Grade	Si Content (%)	Iron Loss P₁.₅/₅₀ (W/kg)	Magnetic Induction B₅₀ (T)	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
0.50 mm Series
50WW250	3.1–3.4	≤2.50	≥1.64	340	440	≥22
50WW310	3.0–3.3	≤3.10	≥1.65	330	430	≥23
50WW350	2.8–3.2	≤3.50	≥1.66	320	420	≥24
50WW400	2.7–3.1	≤4.00	≥1.67	310	410	≥24
50WW470	2.6–3.0	≤4.70	≥1.68	300	400	≥25
50WW600	2.4–2.8	≤6.00	≥1.69	280	380	≥26
50WW800	2.2–2.6	≤8.00	≥1.70	260	360	≥27
50WW1000	2.0–2.4	≤10.00	≥1.71	240	340	≥28
50WW1300	1.8–2.2	≤13.00	≥1.72	220	320	≥29
B50A250	3.1–3.4	≤2.50	≥1.64	340	440	≥22
B50A470	2.6–3.0	≤4.70	≥1.68	300	400	≥25
B50A600	2.4–2.8	≤6.00	≥1.69	280	380	≥26
B50A800	2.2–2.6	≤8.00	≥1.70	260	360	≥27
0.35 mm Series
35WW230	3.2–3.5	≤2.30	≥1.62	360	460	≥21
35WW250	3.1–3.4	≤2.50	≥1.63	350	450	≥21
35WW270	3.0–3.3	≤2.70	≥1.64	340	440	≥22
35WW300	2.9–3.2	≤3.00	≥1.65	330	430	≥22
35WW360	2.7–3.1	≤3.60	≥1.66	320	420	≥23
35WW400	2.6–3.0	≤4.00	≥1.67	310	410	≥23
B35A230	3.2–3.5	≤2.30	≥1.62	360	460	≥21
B35A300	2.9–3.2	≤3.00	≥1.65	330	430	≥22
B35A360	2.7–3.1	≤3.60	≥1.66	320	420	≥23
0.65 mm Series
65WW600	2.5–2.9	≤6.00	≥1.70	270	370	≥27
65WW800	2.3–2.7	≤8.00	≥1.71	250	350	≥28
Ultra-Thin High-Frequency Series
B20AHV800	3.3–3.6	≤8.00 (400 Hz)	≥1.55	410	520	≥15
B15AHV950	3.4–3.7	≤9.50 (400 Hz)	≥1.53	430	540	≥14
B10AHV900	3.5–3.8	≤9.00 (400 Hz)	≥1.50	450	560	≥12
ASTM Standard Grades
M250-50 / M19	3.1–3.4	≤2.50	≥1.64	340	440	≥22
M470-50 / M27	2.6–3.0	≤4.70	≥1.68	300	400	≥25
M600-50 / M36	2.4–2.8	≤6.00	≥1.69	280	380	≥26
M300-35	2.9–3.2	≤3.00	≥1.65	330	430	≥22
Semi-Processed Grades
SP50	1.8–2.3	Semi-processed (annealing required)	Semi-processed	230	330	≥28
SP35	2.8–3.3	Semi-processed (annealing required)	Semi-processed	330	430	≥22
Note: Semi-processed grades require customer-side stress-relief annealing to activate magnetic properties. HV series are tested at 400 Hz; all other grades are tested at 50 Hz / 1.5 T.

Detailed Technical Specifications

Item	Technical Specification
Product Name	CRNO Coil
Full Product Name	Cold-Rolled Non-Oriented Silicon Steel Coil
Material Type	Non-Grain-Oriented Electrical Steel
Chinese Grade System	WW Series; Baosteel B+A Grades
WW 0.50 mm Series	50W250, 50W470, 50W310, 50W350; additional general-purpose and high-grade WW options are listed in the property table
WW 0.35 mm Series	35W230, 35W270, 35W300, 35W360, 35W400
WW 0.65 mm Series	65W400, 65W600
Baosteel B+A 0.50 mm Series	B50A250, B50A470, B50A600, B50A800
Baosteel B+A 0.35 mm Series	B35A230, B35A300, B35A360
Baosteel High-Grade Series	B20AHV800, B15AHV950, B10AHV900
JIS Grades	50W250, 50W470, 35W300, 35W230
ASTM Grades	M250-50, M470-50, M600-50, M300-35; traditional grades include M19, M27, and M36
Semi-Processed Grades	SP50, SP35
GB Standards	GB/T 2521.1-2016; GB/T 17951-2014
IEC Standard	IEC 60404-8-4
JIS Standard	JIS C 2552
ASTM Standard	ASTM A677/A677M
EN Standard	EN 10106
DIN Standard	DIN EN 60404
Ultra-Thin Thickness	0.10, 0.12, 0.15, 0.20, 0.25 mm
Standard Thickness	0.30, 0.35, 0.50, 0.65 mm
Original Mother Coil Width	1000–1250 mm
Slitting Width	5–1240 mm
Slitting Width Tolerance	±0.005 mm
Standard Coil ID	508 mm
Single Coil Weight	1.5–7 tons
Supply Format	Mother coils; small-lot split coils supported
Insulation Coating	Single-side or double-side inorganic insulation coating
Environmental Coating	RoHS-compliant, chrome-free, environmentally friendly coating
Processing Services	Flattening, stamping, laser cutting, stress-relief annealing
Typical Applications	Motors, generators, EV drive motors, appliance motors, wind turbines, and PCS energy-storage converter cores
MOQ	5 tons for standard mother coils; MOQ for custom slitting depends on specification
Payment Terms	T/T; L/C at Sight
Packing	Waterproof kraft paper + galvanized steel strapping + seaworthy export wooden pallet
Trade Terms	FOB Qingdao, CFR, CIF, EXW optional
Delivery Time	7–15 working days after receipt of deposit
Certificates & Inspection	Mill Test Certificate (MTC); ISO, SGS, RoHS, and third-party inspection available upon request

Product Comparison Table

Thickness Category	GB WW Grade	Baosteel B+A Grade	JIS Grade	ASTM A677 Grade	Semi-Processed Grade	Typical Application
0.50 mm Ultra-Low-Loss Grade	50WW250	B50A250	50W250	M250-50 / M19	—	High-efficiency industrial motors, EV auxiliary motors
0.50 mm Mid-Low-Loss Grade	50WW310 / 50WW350	—	—	—	—	Energy-saving home appliance motors
0.50 mm General-Purpose Grade	50WW400 / 50WW470	B50A470	50W470	M470-50 / M27	—	General industrial motors, generator cores
0.50 mm Economic Grade	50WW600 / 50WW800 / 50WW1000 / 50WW1300	B50A600 / B50A800	—	M600-50 / M36	—	Low-power small motors, fan motors, pump motors
0.35 mm Ultra-Low-Loss Grade	35WW230 / 35WW250	B35A230	35W230	M300-35	—	High-speed motors, high-efficiency generators
0.35 mm Mid-Low-Loss Grade	35WW270 / 35WW300	B35A300	35W300	—	—	Compressor motors, new-energy drive motors
0.35 mm General-Purpose Grade	35WW360 / 35WW400	B35A360	—	—	—	Small generators, servo motors
0.65 mm Generator Grade	65WW600 / 65WW800	—	—	—	—	Large diesel generators, wind turbine cores
Ultra-Thin High-Frequency Grade	—	B20AHV800 / B15AHV950 / B10AHV900	—	—	—	EV drive motors, PCS energy-storage converters
Semi-Processed Grade	—	—	—	—	SP35 / SP50	Custom annealing projects, self-designed magnetic cores

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FAQs

What is CRNO Coil used for?

CRNO Coil is used as non-grain-oriented electrical steel for rotating magnetic cores in motors, generators and power conversion equipment. Applications include industrial motors, household appliance motors, EV drive motors, generators, wind turbines and PCS energy-storage converter cores.

What thickness options are available for CRNO silicon steel coil?

The supplied range includes 0.10, 0.12, 0.15, 0.20, 0.25, 0.30, 0.35, 0.50 and 0.65 mm gauges. The 0.10–0.25 mm range is identified as ultra-thin, while 0.30–0.65 mm covers standard gauges.

Can CRNO Coil be precision slit to a customized width?

Yes. The supplied specification supports longitudinal slitting from 5 mm to 1240 mm, with a stated ±0.005 mm width tolerance.

Which insulation coatings are available?

The available options include single-side and double-side inorganic insulation coatings, as well as a RoHS-compliant chrome-free environmental-friendly coating.

Can CRNO Coil be supplied with motor-lamination processing?

Yes. The supplied processing options include flattening, motor-lamination stamping, laser cutting and stress-relief annealing.

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CRNO Silicon Steel Coil for Motors & Generators

CRNO Coil

Product Overview

Chemical & Mechanical Property Snapshot

Detailed Technical Specifications

Product Comparison Table

App Market

Product Packaging

FAQs

Related Projects

Vietnam Binh Duong Foreign-Invested Industrial Park Project

Texas Commercial Warehouse & Logistics Center Project, USA

Middle East Petrochemical EPC Project

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