B30APV1500现货B20A250 0.2*1000

电工钢硅钢片：Q/BQB 485－20214示例 1：B23G110 表示公称厚度为 0.23mm 的普通型取向电工钢，牌号比总损耗名义值的保证值 P1.7/50不大于 1.10W/kg；示例 2：B30P105 表示公称厚度为 0.30mm 的高磁极化强度型取向电工钢，牌号比总损耗名义值的保证值P1.7/50不大于 1.05W/kg；示例 3：B27R090 表示公称厚度为 0.27mm 的磁畴细化型取向电工钢，牌号比总损耗名义值的保证值 P1.7/50 不大于 0.90W/kg；示例 4：B23HS080 表示公称厚度为 0.23mm 的耐热刻痕磁畴细化型取向电工钢，牌号比总损耗名义值的保证值 P1.7/50不大于 0.80W/kg；示例 5：B23RD080 表示公称厚度为 0.23mm 的配电变压器专用磁畴细化型取向电工钢，牌号比总损耗名义值的保证值 P1.7/50不大于 0.80W/kg；示例 7：B27RT090 表示公称厚度为 0.27mm 的特高压变压器专用磁畴细化型取向电工钢，牌号比总损耗名义值的保证值 P1.7/50不大于 0.90W/kg；示例 7：B27P100-LM 表示公称厚度为 0.27mm 的高磁极化强度型低噪声系列取向电工钢，牌号比总损耗名义值的保证值 P1.7/50不大于 1.00W/kg示例 8：B27G140-NC 表示公称厚度为 0.27mm 的普通型无涂层系列取向电工钢，牌号比总损耗名义值的保证值 P1.7/50不大于 1.40W/kg

电工钢硅钢片Electrical steel, also known as silicon steel sheet, is an indispensable metal material in the power, electronics, and military industries, and is also the largest functional material in production. It is mainly used as the iron core for various motors, generators, and transformers. Specific total loss (iron loss) is the total power consumed per unit mass of material when the magnetic polarization waveform remains sinusoidal, with a specific peak and frequency. The specific total loss is represented by the symbol P (Jm/f), in W/kg. Example: P1.5/50 represents the specific total loss at a maximum magnetic polarization intensity of 1.5T and a frequency of 50Hz. 3.2 Magnetic Polarization Q/BQB 480-20212 Magnetic polarization intensity refers to the peak magnetic polarization intensity of a specific magnetic field intensity when a sample is subjected to alternating magnetization. Its symbol is J (H), and the unit is T (Tesla). Example: J5000 represents the peak magnetic polarization intensity corresponding to a magnetic field intensity peak of 5000A/m. The material grades in this document are classified based on the nominal maximum specific total loss P1.5/50 (W/kg) at a magnetic polarization strength of 1.5T and a frequency of 50Hz, as well as the nominal thickness of the material. They are further divided into three categories based on product characteristics: ordinary type, stress relief annealing type, and high-efficiency type. Example 1: B35A210 represents a common non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific total loss value P1.5/50 is 2.10W/kg； Example 2: B35AR300 represents a stress relieved annealed non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific total loss value P1.5/50 is 3.00W/kg； Example 3: B35AH230 represents an efficient non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.30W/kg. Example 4: 35WW210 represents a normal type WW non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.10W/kg. Example 5: 35WH230 represents an efficient WH non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.30W/kg. The classification and code of insulation coatings shall comply with the provisions of Table 2. Table 2 Classification and Code of Insulation Coatings Type Code Characteristics of Insulation Coatings Semi organic Thin Coating A Improves Punching Performance and Has Good Weldability Semi organic Thick Coating H has Good Punching Performance and High Interlayer Resistance Semi organic Chromium Free Thin Coating K does not contain chromium and has good weldability Semi organic Chromium Free Thick Coating M does not contain chromium and has good insulation performance Semi organic Chromium Free Extreme Thick Coating J does not contain chromium and has excellent insulation performance Semi organic Chromium Free Ultra Thick Coating L does not contain chromium and has extremely high insulation performance Self adhesive Coating