CE digit classification in detail
First Digit - Category of use:
There are four categories 1-4:
Light duty: Low frequency of use by people with a high incentive to exercise care and with only a small chance of accidents occurring or of misuse.
Medium Duty: Medium frequency of use by people with some incentive to exercise care but where there is some chance of accidents occurring or of misuse.
Heavy duty: High frequency of use by public and others with little incentive to exercise care and with a high chance of accidents occurring or of misuse.
Severe duty: For use on doors that are subject to frequent violent usage.
Second Digit - Durability:
Durability of hinges is classified into one of four categories of use; two are for windows and two for doors. Hinges for doors are tested to 25,000 and 200,000 cycles, whilst this may not seem to be many cycles when compared with the numbers in the annual usage table it must be remembered that the hinge test equipment in the standard applies the full test loads to one hinge and this greatly accelerates the actual wear in real use. The table on the next page shows the typical frequency of doors in use, the durability requirements and a subjective category of use.
Third digit - Test Door Mass:
Currently there are eight weight grades for the test door though this will potentially be increased in future issues of the standard. The grades start at 10kg and go up to the maximum of 160kg.
Fourth Digit - Fire Behaviour:
Grade 0: not approved for use on fire/smoke resisting door assemblies, Grade 1 is suitable for use on fire/smoke resisting door assemblies. This 0 or 1 grading is likely to be superseded in revisions to standards, giving greater detail of exactly what fire rating was achieved. All fire tests must be carried out to EN1634.
Fifth digit - Safety:
Only grade 1 hinges are acceptable. Grade 1 hinges meet the essential requirements of safety in use, which forms part of the Construction Products directive (89/106/EEC)
Sixth digit - Corrosion Resistance:
There are five grades of corrosion resistance ranging from 0 to 4.
- Grade 0 no corrosion resistance
- Grade 1 mild resistance
- Grade 2 moderate resistance
- Grade 3 high resistance
- Grade 4 very high resistance
Corrosion testing is carried out in accordance with the test methods outlined in EN 1670
- Grade 0 - No defined corrosion resistance
- Grade 1 - 24 hours salt spray resistance
- Grade 2 - 48 hours salt spray resistance
- Grade 3 - 96 hours salt spray resistance
- Grade 4 - 240 hours salt spray resistance
Seventh Digit - Security:
Two grades are identified. Grade 0 is not suitable and Grade 1 is suitable for security doors.
Eigth Digit: - Hinge Grade
Fourteen grades are identified within the standard, which are shown earlier under the BS EN 1935 classification.