Expression of steel plate specifications

Specification of steel plate:

1, cold-rolled non-oriented silicon steel strip (sheet): Expression: DW + iron loss value (at a frequency of 50HZ, waveform sinusoidal magnetic induction peak value of 1.5T iron loss value per unit weight.) of 100 times + thickness value of 100 times.

2, cold rolled silicon steel strip (sheet): expressed as: DQ + iron loss value (at a frequency of 50HZ, waveform sinusoidal peak magnetic susceptibility of 1.7T iron loss value per unit weight.) of 100 times + thickness value of 100 times. Sometimes the iron loss value is followed by G to indicate high magnetic susceptibility.

3, hot rolled silicon steel plate: hot rolled silicon steel plate with DR, according to the amount of silicon content is divided into low-silicon steel (silicon content ≤ 2.8%), high-silicon steel (silicon content & gt; 2.8%).

Representation: DR + iron loss value (with 50HZ repeated magnetization and sinusoidal changes in the maximum value of the magnetic induction intensity of 1.5T when the value of iron loss per unit weight) of 100 times + thickness value of 100 times. For example, DR510-50 indicates that the iron loss value is 5.1 and the thickness is 0.5mm of hot rolled silicon steel sheet. Hot rolled silicon steel plate for household appliances with JDR + iron loss value + thickness value to indicate, such as JDR540-50.

Expanded information:

Other commonly used steel plate representation:

1, pressure vessels with steel plate: With a capital R at the end of the sign that the sign can be used yield point can also be used for carbon content or alloying elements.

E.g.: Q345R, Q345 for the yield point. Then: 20R, 16MnR, 15MnVR, 15MnVNR, 8MnMoNbR, MnNiMoNbR, 15CrMoR, etc. are used to indicate the carbon content or alloying elements.

2, welded gas cylinders with steel plate: with capitals HP at the end of the sign, the sign can be expressed in yield point, such as: Q295HP, Q345HP; can also be used with alloying elements to indicate that, such as: 16MnREHP.

3, boilers with steel plate: with lowercase g at the end of the sign. Its grade can be used to yield point, such as: Q390g; can also be used to indicate the carbon content or alloying elements, such as 20g, 22Mng, 15CrMog, 16Mng, 19Mng, 13MnNiCrMoNbg, 12Cr1MoVg and so on.

4, steel plate for bridges: with lowercase q at the end of the grade number, such as Q420q, 16Mnq, 14MnNbq, etc..

5, automobile beams with steel plate: with capital L at the end of the grade number, such as 09MnREL, 06TiL, 08TiL, 10TiL, 09SiVL, 16MnL, 16MnREL and so on.

Baidu Encyclopedia-Steel Plate

Baidu Encyclopedia-Hot-Rolled Steel Plate