Surface hardness: 370-430 HBW
According to the standard EN ISO 6506-1, the surface Brinell hardness test is carried out after the surface of the steel plate is milled to a depth of 0.5-2.0 mm.
Minimum center hardness:
Steel plate thickness ≤20 mm: the minimum guaranteed value of surface hardness, 370 HBW
Steel plate thickness> 20 mm: 95% of the minimum guaranteed value of surface hardness (*)
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