B23P085 Baosteel CRGO Silicon Steel | 0.23mm P1.7/50 0.85W/kg for Transformer Core

 

B23P085 is a 0.23mm Hi-B high permeability grain oriented silicon steel manufactured by Baosteel. Its standard core loss is ≤0.85W/kg at P1.7/50.

It features high magnetic permeability, low eddy current loss, flat sheet shape and stable punching performance, perfectly suited for mass production of transformer iron cores.

It is the most cost-effective low-loss core material for distribution transformers and high-efficiency dry-type transformers across the globe. It serves as an equivalent substitute for Japanese M3 / 23C085 grades, balancing low no-load loss, low operating noise and controllable procurement costs.

 

 

Breakdown of B23P085 Grade Nomenclature

• B: Grain oriented silicon steel of Baosteel, complying with national standard GB/T2521
• 23: Nominal steel thickness of 0.23mm
• P: Hi-B high permeability type material
• 085: Maximum core loss of 0.85W/kg under 1.7T magnetic flux density and 50Hz frequency

 

 

Parameter	Standard Value
Grade	B23P085 Hi-B CRGO
Thickness	0.23mm
Core Loss P1.7/50	≤0.85W/kg
Magnetic Induction B800	≥1.88T
Magnetic Induction B1000	≥1.96T
Stacking Factor	≥97.2%
Standard Insulation Coating	M / T2
Executed Standard	GB/T2521
Equivalent Grade	M3 / 23C085

 

Get the B23P085 technical datasheet, which contains full electromagnetic performance parameters (core loss curves, DC magnetization curves, exciting power curves), mechanical property indexes (yield strength, tensile strength, elongation), coating properties, dimensional tolerances and other core technical data. Formulated in strict compliance with Baosteel corporate standard Q/BQB 485-2018, this datasheet is an indispensable reference for engineers in grade selection, design, transformer core calculation and technical scheme demonstration.

Download B23P085 Datasheet PDF Now

 

Ultra-low core loss of 0.85W/kg: Solve the problem of excessive no-load loss of transformers

Compared with ordinary 0.23mm / 0.27mm silicon steel, it delivers remarkable energy-saving effects and complies with energy efficiency standards worldwide, including ErP directives and grid specifications for Southeast Asia and the Middle East.

 

Hi-B high permeability characteristic: Shrink core size and cut copper winding costs

For transformers with the same capacity, the iron core can be made smaller with less copper consumption, which reduces the overall manufacturing cost of finished transformers.

 

Benefits of 0.23mm thin gauge: Suppress high-frequency eddy current and lower operating noise

It is ideal for dry-type transformers and indoor low-noise transformer applications, effectively eliminating end customers' complaints about operating noise.

 

 

B23P085 Hi-B CRGO silicon steel is perfectly optimized for high-efficiency and medium-noise transformer projects. It is the preferred core material for energy-saving power and distribution equipment.

 

10kV oil-immersed distribution transformers

Stable low core loss ensures transformers meet international grid energy efficiency requirements and reduce long-term no-load power consumption.

 

SCB13 / SCB14 high-efficiency dry-type transformers

The 0.23mm thin gauge and high permeability effectively lower operating noise, making it ideal for indoor, commercial and residential power supply scenarios.

 

Photovoltaic & wind energy storage reactors

Excellent magnetic stability under frequent load fluctuation improves energy conversion efficiency for new energy power systems.

 

Medium and small-capacity power transformers

Balances high energy-saving performance, stable batch quality and competitive cost for mass production of standard power equipment.

 

 

 

B23P085 vs Japanese M3 / 23C085 (Core equivalent comparison)

Magnetic indicators including core loss and magnetic permeability are fully consistent. B23P085 has obvious advantages in unit price and flexible delivery cycle.

Its test reports and MTC certificates are universally accepted to pass grid certification in Europe, Southeast Asia and the Middle East, and can completely replace imported M3 to cut raw material costs.

 

B23P085 vs B23R085 (Laser scribed type)

B23R085 with laser domain refinement achieves lower running noise and slightly reduced core loss, but carries higher material cost.

For conventional distribution transformers, B23P085 is the cost-effective option; for high-end indoor dry-type transformers requiring ultra-low noise operation, B23R085 is recommended.

 

 

B23P085 vs B27P090 (Trade-off between thickness, performance and cost)

0.27mm B27P090 has lower material cost but higher eddy current loss.

Small and medium-capacity transformers pursuing high energy efficiency standards should adopt 0.23mm B23P085 to reduce long-term power consumption.

Large-capacity conventional distribution transformers without strict energy-saving limits can choose B27P090 to control upfront production expenditure.

 

B23P085 is applicable to high-end scenarios including state grid energy-efficient transformers and UHV DC converter transformers. Different application scenarios such as power transformers, reactors, motor stators and rotors, and new energy inverters have differentiated requirements for indicators including core loss, magnetic induction and stacking factor. Our technical team will provide a one-on-one free core grade selection solution based on your specific equipment parameters, power rating, operating frequency and service environment. The solution includes horizontal comparisons and matching suggestions between B23P085 and equivalent grades such as B23P090, B23P095 and B30G120.

Get Free Grade Selection Solution Now

 

 

We supply 100% original Baosteel B23P085 Hi-B grain oriented silicon steel with stable coating performance, reliable process adaptability, complete export documentation, consistent batch quality and abundant spot inventory, fully meeting transformer factory mass production and international export standards.

 

Rich Spot Inventory & Diversified Supply Forms

We keep full-spec spot stocks, covering jumbo coils, standard large coils and small trial coils. Both prime full-certificate coils and cost-effective concession coils are available. We also provide cut-edge / mill-edge materials and customized lamination processing to match different trial, mass and budget demands.

 

 

Excellent Processing & Dimensional Performance for Core Production

Our Baosteel B23P085 features flat plate shape, uniform thickness and good ductility. It supports precise slitting, custom width cutting and blanking with low burr performance. Strict dimensional tolerance control ensures high stacking factor and qualified finished core quality, perfectly suitable for mass transformer core stamping and processing.

 

 

Full Set of Export Certification Support

We provide complete export documents including MTC 3.1/3.2 English mill test certificates, batch inspection reports, third-party electromagnetic test reports and coating compliance certificates. All documents support global customs clearance, transformer factory testing and international grid certification.

 

Reliable Insulation Coating & Thermal Stability

All B23P085 coils come with standard M/T2 anti-rust insulation coating with strong adhesion and excellent temperature resistance. The coating remains stable during high-speed punching, cutting and stress-relief annealing, no peeling or insulation failure. It guarantees consistent insulation performance for long-term transformer operation.

 

Custom sample processing service is available for B23P085, and sample dimensions can be customized according to customers' stamping mold parameters. Meanwhile, complete MTC (Mill Test Certificate) will be delivered together with goods, which records detailed chemical composition, magnetic properties, mechanical properties and inspection data of products, complying with international standards such as EN 10204. The MTC certificate is a critical compliance document for material quality traceability, export customs clearance and project acceptance.

Request Free Samples

 

FAQ

 

Is Baosteel B23P085 equivalent to M3 CRGO?

Yes. The magnetic performance of Baosteel B23P085 fully matches Japanese M3 / 23C085 CRGO. It can completely replace imported M3 for transformer production and pass global grid certification.

 

What is the core loss of B23P085 P1.7/50?

The guaranteed maximum core loss of B23P085 under P1.7/50 test condition is ≤0.85W/kg.

 

Does B23P085 support custom slitting size?

Yes. We offer precision slitting service to meet customers' required width, and we can also provide cut-edge or mill-edge finished strips.

 

Can B23P085 be used for dry type transformer?

Absolutely. Its 0.23mm thin gauge and Hi-B high permeability help reduce operation noise, making it an ideal material for SCB13 and SCB14 high-efficiency dry-type transformers.

 

What is the difference between B23P085 and B23R085?

B23R085 adopts laser scribing technology for lower noise and slightly better core loss, yet costs higher. B23P085 is cost-effective for standard distribution transformers, while B23R085 suits high-end ultra-low-noise indoor transformers.

 

What is the price of B23P085 per kilogram?

The unit price of Baosteel B23P085 fluctuates based on coil type (prime coil / concession coil), order quantity, processing requirements (slitting, lamination) and delivery terms (EXW / FOB). We cannot post fixed public prices online. Please send your required tonnage, size and usage scenario to us, and we will provide the latest real-time quotation within 24 hours.