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1) Brinell hardness, HBW, according to EN ISO 6506-1, on a milled surface 0.5 – 3 mm below surface. At least one test specimen per heat and 40 tons. The nominal thickness of supplied plates will not deviate more than +/- 15 mm from the thickness of the test specimen used for hardness testing. For sheet the Brinell hardness test is according to EN ISO 6506-1 on each heat treatment individual/coil. Hardness is measured on a milled surface 0.3 - 2 mm below surface.
2) Hardness test is not performed or guaranteed for Hardox® products with thicknesses < 2.5 mm. The tabulated hardness values for thickness < 2.5 mm is a conversion from the tensile strength.
For more information please see the datasheet 2067- Hardness conversion of thin Hardox® wear sheet.
The nominal thickness of supplied plates will not deviate more than +/- 15 mm from the thickness of the test specimen used for hardness testing.
Hardox® wear plate is through-hardened. Minimum core hardness is 90 % of the guaranteed minimum hardness.
1) Impact toughness measured upon agreement. For thicknesses between 3 mm and 11.9 mm, subsize Charpy V-specimens are used. The specified impact toughness is then proportional to the cross-sectional area of the test specimen, compared to a full-size specimen (10 x 10 mm). Impact testing according to ISO EN 148. Average of three tests.
The steel is grain refined. *) Intentional alloying elements.
Tolerances according to Hardox® Thickness Guarantee.
Hardox® Guarantees meet the requirements of EN 10029 Class A for plate, but offer more narrow tolerances. For sheets the guarantees meets the requirements of 1/2 EN 10051.
According to SSAB’s dimension program. For plate, the tolerances are according to SSAB´s mill edge standard or tolerances that conform to EN 10029. Tolerances conform to EN 10051 for sheet, tighter tolerances available on request.
Tolerances according to EN 10029 for plate and according to EN 10051 for sheet.
Tolerances according to Hardox® Flatness Guarantees Class C for plate, which are more restrictive than EN 10029. For sheet, the tolerances are according to Hardox® Flatness Guarantees Class A, that offer narrower tolerances compared to EN 10051.
According to EN 10163-2 Class A, Subclass 1.
Welding, bending and machining
Recommendations can be found in SSABs brochures at www.hardox.com or consult Tech Support.