Guide to BS EN1303:2015 Digit 6
Guide to BS EN1303:2015
The security of any door assembly is a combination of many factors including the door construction and physical environment surrounding the door. However, the cylinder is probably the most vulnerable element in the assembly and is therefore subject to severe requirements of resistance to physical attack and other aspects of security such as key control.
BS EN 1303:2015 is the European Standard which establishes assessment and test criteria for a cylinder to quantify its resistance to physical attack, durability and key security. BS EN 1303:2015 classifies cylinders for locks using an 8 digit coding system. Features assessed include durability, fire resistance, key related security and attack resistance. The resulting 8 digit code can be used to directly compare the performance of one cylinder range against another.
Digit 6 - Corrosion and Temperature Resistance: Four grades of corrosion resistance and temperature requirement are identified:
Grade 0: No corrosion requirement; no temperature requirement;
Grade A: High corrosion resistance; no temperature requirement;
Grade B:No corrosion requirement; temperature requirement: from -25°C to + 65°C;
Grade C:High corrosion resistance; temperature requirement: from -25°C to + 65°C.
Note: It shall be possible to operate the cylinder with its proper key using a maximum torque of 1,5 Nm after tested according to grade 3 (96 hrs) of EN 1670. This corrosion test shall apply to the functionality only. No distinction is made between the inside and the outside of cylinder and/or door. It shall be possible to operate the cylinder with its proper key using a maximum torque of 1,5 Nm at both -25°C and + 65°C.