ISO 630-2:2021 pdf download – Structural steels — Part 2: Technical delivery conditions for structural steels for general purposes.
6.3 Chemical composition 6.3.1 Heat analysis The chemical composition determined by heat analysis shall comply with the values specified in Table A.1 or Table B.1. 6.3.2 Product analysis The product analysis of grades S235, S275, S355 and S460 shall comply with the values given in Table A.2. The permitted deviations on analysis of grades SG205, SG250, SG285 and SG345, relative to the values for heat analysis, are given in Table B.2. 6.3.3 Carbon equivalent value The maximum carbon equivalent value (CEV) requirements for Annex A grades are given in Table A.3. See ISO 630-1 for the formula. 6.4 Mechanical properties 6.4.1 Tensile properties The tensile properties at room temperature shall comply with the values specified in Tables A.4 and A.5 or Table B.3. 6.4.2 Charpy V-notch impact properties The impact properties of Charpy V-notch test pieces shall conform with the values specified in Table A.6 or Table B.4. The orientation of the specimens shall be longitudinal unless transverse orientation is agreed between purchaser and manufacturer (see 5.2 and ISO 630-1). 6.5 Surface condition See ISO 630-1. 6.6 Internal soundness See ISO 630-1. 6.7 Dimensions, tolerances on dimensions and shape, mass See ISO 630-1. 7 Inspection Type of inspection documents (specific or non-specific) shall be specified. Refer to ISO 630-1. 8 Sampling – Frequency of testing 8.1? Verification The verification of mechanical properties shall be by heat.
8.2 Test units 8.2.1 Annex A The test unit shall contain products of the same form, grade, quality, delivery condition and thickness range as specified in Table A.4 for the yield strength, and shall be by heat and: — 60 tonnes or part thereof; — 80 tonnes or part thereof for heavy sections with a mass > 200 kg/m; — 80 tonnes or part thereof for all sections if the mass of the heat exceeds 200 tonnes. By agreement at the time of ordering, two tests by heat may be used. 8.2.2 Annex B The test unit shall contain products of the same form, grade, quality, delivery condition and thickness range as specified in Table B.3 for the yield strength and shall be by heat and 50 tonnes or part thereof. By agreement at time of ordering, two tests by heat may be used. 9 Test methods See ISO 630-1. 10 Marking See ISO 630-1.