Description
M19 CRGO Silicon Steel Coil Supplier — Direct mill pricing with certified magnetic performance data per batch for transformer and motor core applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | M19 CRGO Silicon Steel Coil/Plate |
| Product Type | Cold Rolled Grain Oriented Electrical Steel |
| Steel Grade | M19 |
| Technique | Cold Rolled |
| Thickness Range | 0.3–14mm (coil); 0.3–80mm (plate) |
| Width | 1000mm / 1219mm / 1250mm / 1500mm / 1524mm / 1800mm / 2000mm or custom |
| Length | As per customer requirements |
| Surface Treatment | 2B / 2D / HL (Hairline) / BA (Bright Annealed) / No.4; Colored mirror & brushed finishes available |
| Packing | Waterproof paper + metal pallet + angle bar protection + steel belt; Standard seaworthy packing |
| Container Loading | 20ft GP (~24–26CBM, 23MTS) / 40ft GP (~54CBM, 27MTS) / 40ft HG (~68CBM, 27MTS) |
| Application | Transformers / Motors / Generators |
| MOQ | As per customer request |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Power Transmission | Transformer core lamination for distribution and power transformers |
| Industrial Manufacturing | Motor stator and rotor lamination for industrial electric motors |
| Energy Generation | Generator core components requiring high magnetic permeability |
| Electrical Equipment | Magnetic circuit components in reactors and inductors |
Why Grain Orientation Determines Core Loss Performance in Transformer Applications
M19 CRGO silicon steel delivers lower iron loss and higher magnetic flux density compared to non-oriented alternatives.
When procuring electrical steel for transformer cores, buyers often encounter inconsistent magnetic performance from suppliers who substitute non-oriented grades without disclosure. The grain orientation process aligns crystal structures in the rolling direction, reducing hysteresis loss and eddy current loss during alternating magnetic cycles. Without proper grain orientation control, transformer cores experience excessive heat generation and reduced efficiency [NEED_CITE: CRGO silicon steel grain orientation process and magnetic properties]. Surface insulation coating quality also affects interlaminar resistance—poor coating adhesion leads to short circuits between laminations, increasing eddy current loss and compromising transformer performance ratings.
Matching M19 CRGO Silicon Steel to Transformer Core Lamination Requirements
Power transformer manufacturers require silicon steel with consistent magnetic permeability across the entire coil width. M19 CRGO silicon steel meets this demand through controlled cold rolling and annealing processes that maintain grain orientation uniformity. The 0.3–14mm coil thickness range covers standard lamination stacking for distribution transformers, while plate formats up to 80mm serve specialized heavy-duty core applications. Surface treatments like 2B and BA finishes provide optimal insulation coating adhesion, preventing interlaminar short circuits during transformer assembly and operation.
Compliance Standards and Certification Requirements for Electrical Steel Procurement
Electrical steel procurement for transformer and motor applications must verify magnetic property certifications including core loss (P1.5/50) and magnetic permeability values documented in mill test certificates. Third-party inspection services like SGS or BV can validate dimensional tolerances and surface quality before shipment [NEED_CITE: electrical steel testing standards and certification requirements]. For export shipments to regulated markets, proper customs documentation including certificate of origin and packing lists prevents clearance delays. Material traceability by heat number ensures batch consistency for quality control during transformer core manufacturing.
Understanding M19 Grade Cold Rolled Grain Oriented Silicon Steel
M19 designation indicates a specific core loss class within the CRGO silicon steel family, optimized for transformer applications requiring low iron loss characteristics. The cold rolling process reduces thickness while maintaining grain orientation achieved through primary recrystallization annealing. This grain alignment in the rolling direction maximizes magnetic permeability and minimizes energy loss during alternating current cycles. Width options from 1000mm to 2000mm accommodate various transformer core geometries, while custom widths address non-standard lamination designs. The 2B and BA surface finishes provide smooth surfaces essential for applying insulation coatings that prevent eddy currents between stacked laminations.
Hidden Costs of Procuring Non-Certified Electrical Steel
Purchasing electrical steel without verified magnetic property documentation creates multiple downstream risks. Transformer cores built from material with undisclosed core loss deviations fail efficiency testing, requiring complete core replacement and project delays. Missing mill test certificates block customs clearance in markets requiring electrical steel certification, resulting in container detention fees and reshipment costs. Surface oxidation or coating damage during improper packing increases interlaminar losses, reducing transformer performance below design specifications [NEED_CITE: electrical steel quality control and testing requirements].
Procurement Advantages from Direct Mill Supply
Our in-house physical and chemical laboratory performs magnetic property testing on every production batch, providing mill test certificates documenting core loss and permeability values before shipment. The 2800+ specification range in our product catalog covers diverse electrical steel requirements from thin gauge lamination to heavy plate formats. ISO 9001:2015 certification ensures consistent quality control across production runs, while SGS and BV third-party inspection services provide independent verification for quality-sensitive projects. Professional container loading with waterproof paper wrapping and angle bar edge protection prevents surface damage and oxidation during ocean freight. Custom width slitting services address non-standard transformer core designs without minimum order quantity restrictions.
Documentation & Compliance
- Mill test certificate documenting M19 CRGO chemical composition and magnetic properties (core loss P1.5/50, permeability) per batch
- ISO 9001:2015 quality management system certification for production process control
- SGS or BV third-party inspection report for dimensional tolerance and surface quality verification
- Material traceability documentation linking each coil to specific heat number and production parameters
- Export customs documents including commercial invoice, packing list, bill of lading, and certificate of origin
- Surface treatment certification confirming insulation coating type and adhesion properties
Packaging, Loading & Delivery
- M19 CRGO silicon steel coils wrapped in waterproof paper with metal pallet base and angle bar edge protection to prevent moisture damage and edge deformation during ocean transit
- Steel belt strapping secures coil integrity while avoiding surface scratching on 2B and BA finished materials
- Container loading optimized for 20ft GP (23MTS capacity) and 40ft GP/HG configurations based on coil weight and width specifications
- Custom length cutting services available for plate orders requiring specific lamination dimensions
- Heat number and steel grade marking on each coil ensures material traceability during transformer core manufacturing
- FOB, CIF, and DDP trade terms available with professional loading supervision to prevent coil shifting during transport
Initiating Your M19 CRGO Silicon Steel Procurement
Submit your transformer core lamination specifications including thickness, width, surface treatment preference, and quantity to receive detailed quotation with mill test certificate samples. Our technical team provides material recommendation based on your transformer design requirements and confirms production lead times for standard and custom width orders. Certification documents and third-party inspection arrangements are confirmed before contract signing to ensure compliance with your project specifications.
Frequently Asked Questions
Q: What is the difference between M19 CRGO and non-oriented silicon steel for transformer applications?
A: M19 CRGO silicon steel features grain orientation aligned in the rolling direction, providing lower core loss and higher magnetic permeability compared to non-oriented grades. This makes CRGO material essential for transformer cores where efficiency and heat generation are critical factors. Non-oriented silicon steel suits rotating machine applications like motors where magnetic properties are required in multiple directions.
Q: Can you supply M19 CRGO silicon steel in custom widths outside the standard range?
A: Yes, we provide custom width slitting services for M19 CRGO silicon steel coils beyond the standard 1000mm to 2000mm range. Custom widths accommodate non-standard transformer core designs without minimum order quantity restrictions. Contact our technical team with your specific width requirements for quotation and lead time confirmation.
Q: What magnetic performance data is included in the mill test certificate?
A: Mill test certificates for M19 CRGO silicon steel document chemical composition, core loss values (P1.5/50), magnetic permeability measurements, and thickness tolerances. Each certificate links to specific heat numbers for material traceability. Third-party inspection reports from SGS or BV are available for additional verification of magnetic properties and surface quality.
Q: How is M19 CRGO silicon steel packed to prevent damage during container shipping?
A: Coils are wrapped in waterproof paper with metal pallet base support and angle bar edge protection to prevent moisture ingress and edge deformation. Steel belt strapping secures the coil while avoiding surface contact damage on 2B and BA finishes. Professional container loading supervision prevents coil shifting during ocean transit, and heat number marking ensures material identification at destination.
Q: What trade terms and lead times apply to M19 CRGO silicon steel orders?
A: We offer FOB, CIF, and DDP trade terms based on your destination port requirements. Standard width orders ship from inventory, while custom width slitting orders require typical production lead times confirmed during quotation. Third-party inspection arrangements and certification document preparation are coordinated before shipment to ensure smooth customs clearance.
Request M19 CRGO Silicon Steel Quotation with Magnetic Property Certification
Submit your transformer core specifications including thickness, width, surface treatment, and quantity to receive detailed pricing with mill test certificate samples and production timeline confirmation.
Contact: Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.sdxjypipe.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjypipe.com
