Sub-grade J2 correspond to a minimum KV of 27 J at -20☌. Sub-grade J0 correspond to a minimum KV of 27 J at 0☌. Sub-grade JR correspond to a minimum KV of 27 J at Room temperature (+20☌). the impact energy in Joules required to fracture a Charpy V-notch specimen at a given test temperature T. The fracture toughness of steel is characterized in EN in terms of the KV(T) value i.e. Steel sub-grades JR, J0, J2, K2 characterize the ability of steel to behave in a ductile manner and therefore avoid brittle fracture, especially at low temperatures.See Details below for the description of the relevant EN standard. Steel grades with the designation 'H', according to the standard EN 10219-1 are applicable for cold formed structural hollow sections. Steel grades with the designation 'H', according to the standard EN 10210-1 are applicable for hot finished structural hollow sections. Steel grades according to the standards EN 10025-2, EN 10025-3, EN 10025-4, EN 1002-5, EN 10025-6 are applicable for hot rolled structural steel.Structural Steel Strength Properties for elements with nominal thickness 40 mm < t ≤ 80 mm Structural Steel Strength Properties for elements with nominal thickness t ≤ 40 mmĮN10025-2 Hot rolled products - Non-alloy structural steelsĮN10025-3 Hot rolled products - Normalized/normalized rolled weldable fine grain structural steelsĮN10025-4 Hot rolled products - Thermomechanical rolled weldable fine grain structural steelsĮN10025-5 Hot rolled products - Structural steels with improved atmospheric corrosion resistanceĮN10025-6 Hot rolled products - High yield strength structural steels in the quenched and tempered conditionĮN10210-1 Hot finished structural hollow sections - Non-alloy and fine grain steelsĮN10219-1 Cold formed welded structural hollow sections - Non-alloy and fine grain steels
0 Comments
Leave a Reply. |