What does 8 digit coding system means on BS EN1935 Hinge?

How to understand the 8 digit codes shown on EN1935 certificate for CE door hinge?

BS EN 1935 classifies door furniture hinge by using an 8 digit coding system.Let us find out what does each digit means.

1. Category of Use(D&D is Grade 4)

Four grades are identified:

Grade 1 : Light duty

Grade 2 : Medium Duty

Grade 3 : Heavy duty

Grade 4 : Severe Duty

2.Durability(D&D is Grade 7)

Grade 3 : 10 000 test cycles, for light duty hinges on windows only

Grade 4 : 25 000 test cycles, for light duty hinges on windows and doors

Grade 7 : 20 000 test cycles, for medium. heavy and serve duty hinges on door only

3. Test door mass(D&D is Grade 6)

Eight door mass grades related to single-axis hinges are identified in this European standard as shown in table below.

4. Fire Resistance(D&D is Grade 1)

Two grades of fires resistance are identified:

Grade 0 : Not approved for fire /smoke resistant door assemblies

Grade 1 : Suitable for fire/smoke resistant door assemblies subject to satisfactory assessment of the contribution of the single-axis hinge to the fire resistance of the specified fire/smoke door assemblies. such assessment is beyond the scope of this European standard(see EN 1634-1).

5. Safety(D&D is Grade 1)

Single-axis hinges are required to satisfy the essential requirement of safety in use.Therefore, only grades 1 is identified.

6.Corrosion Resistance(D&D is Grade 4)

Five grades of corrosion resistance are identified in accordance are identified in accordance with EN 1670:

Grade 0 : No defined corrosion resistance.

Grade 1 : Mild resistance

Grade 2 : Moderate Resistance

Grade 3 : High resistance

Grade 4 : Very High resistance

7. Security

Two grades of security are identified for single-axis hinges:

Grade 0 ：Not suitable for use on burglar-resistant door assemblies

Grade 1 ：Suitable for applications requiring a degree of security. Annex C of this European standard details the hinge grade to use for the level of security required.

8.Hinge grade(D&D is Grade 13)

Fourteen grades are identified in this European standard and are detailed in table 2 below. the full classification is shown in the standard.

BS EN 1634 Part 1: 2000

It is the European Fire safety Standard for determining the fire resistance of door and shutter assemblies including hardware designed for installation within openings incorporated in vertical separating elements(doorsets). 

CE Marking

CE Marking is the easiest and safest route to providing compliance with the latest BS construction Product Directive for hardware used on fire, smoke and escape doors.

Hope above information helps ??

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