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Is silicon steel sheet 50CS470 and H 18 the same material?

H 18 is an ancient Japanese number with typical values as follows:

Magnetic induction intensity of iron loss

1.5T/50 hzb 50

≤4.7 ≥ 1.64

It is basically consistent with the current 50CS470 (Taiwan Province Sinosteel). Belongs to a material.