The steel is fine-grain melted and can contain microalloying elements such as Nb and V.
1) CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, according to IIW
The high level of hardness is achieved by online accelerated cooling or conventional quenching.
460 - 540 HB.
Standard values for as-delivered condition (for 20 mm plate thickness)
Brinell hardness is measured according to ISO 6505 per heat and for every 40 t. Hardness is measured approx. 1mm under the surface. The heat analysis is provided as proof of the chemical composition.
Tolerances and surface finish
Unless otherwise agreed, tolerances according to EN 10029 (thickness tolerance according to class A, flatness tolerance according to class N) and surface finish according to EN 10163-A1 are valid.
In general, marking consists of:
Material testing certificate
Type of certificate according to EN 10204 must be agreed upon ordering.
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