Content with ISO 898

18 March 2015
Chemical composition as per ISO 898-2 for typical grades Class Material and Treatment C max. Mn min. P max. S max. 8 (M16 and below) carbon steel (may be quenched and tempered) 0.58 0.25 0.060 0.150 8 (above <16) carbon steel quenched and tempered 0.58 0.30 0.048 0.058 10 carbon steel quenched and tempered 0.58 0.30 0.048 0.058 12 carbon steel quenched and tempered 0.58 0.45 0.048 0.058 Hardness requirement as per ISO 898-2 for typical grades Hardness scale Size Class 8
Read more about ISO 898-2 Carbon Steel and Alloy Steel - Nuts

14 February 2015
Chemical composition as per ISO 898-1 for typical grades Class Material and Treatment C min. C max. P max. S max. B max. Tempering temp. [°C] 8.8 carbon steel with additives (e.g. b, mn or cr) quenched and tempered 0.15 (d) 0.40 0.025 0.025 0.003 425 8.8 carbon steel quenched and tempered 0.25 0.55 0.035 0.025 0.003 425 10.9 carbon steel with additives (e.g. b, mn or cr) quenched and tempered 0.
Read more about ISO 898-1 Carbon Steel and Alloy Steel - Bolts, screws and studs