① Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions shall be taken to prevent the addition, from scrap or other material used in manufacture, of such elements which affect the hardenability, mechanical properties and application.

• The elongation values in the table are for a gauge length of 80 mm.
• +A=annealed，+LC=annealed and skin passed，+CR=cold rolled，+QT=quenched and tempered

*The purchaser may specify hardness or tensile values but not both. If neither is specified then tensile values shall apply.
** Values apply to the quenched and tempered condition with thickness 0.30mm ≤ t ≤ 3.00mm and martensitic and/or bainitic structure. For thicker strip or other structure, the values for the maechanical properties shall be agreed at the time of enquiry and order. For material supplied in the quenched and tempered condition, a range of 150 MPa or 50 HV shall apply, e.g. 1150 MPa to 1300 MPa or e.g. 350 HV to 400 HV.