Safety shoes are tested and certified according to EN 20345:2011.
In EN 20345:2011, all requirements for safety shoes are defined and split into basic and additional requirements. Examples of basic requirements:
Unless the shoe has an insole board, the insole must be non-detachable.
- Safety toe protection caps must be non-detachable
- The toe cap must be equipped with an edge protection of a length of 5 mm minimum below the toe cap and 10 mm minimum in the opposite direction
- The inner length of the toe cap must not exceed a certain required value (size 42: 39mm).
- Resistance against shocks of 200 joules
Specific ergonomic features
The specific ergonomic features have to be considered positive on the basis of 3 test persons and 3 different foot sizes. Typical daily activities are simulated, such as:
- Normal walking
- Walking on stairs up and down, 1 min.
The test shoe is put on the ground, loaded with a vertical force and moved horizontally on the ground surface (alternatively, the ground surface is moved against the shoe).
The frictional force is measured and the dynamic friction coefficient is calculated.
- Detergent on ceramic tile = SRA
- Glycerine on steel ground = SRB
- Both tests passed = SRC
|Symbol||Requirement / properties||Required protection|
|P||Penetration resistance of the outsole||↑ 1100 N|
|E||Energy absorption in the heel section||↑ 20 Joule|
|A||Antistatic shoe||Between 0,1 and 1000 Ω|
|C||Conductive shoe||↓ 0.1 MΩ|
|WRU||Water resistance and absorption of the upper materials||↑ 60 min.|
|HI||Heat insulation||Test at 150 °C|
|CI||Cold insulation||Test at -20 °C|
|HRO||Resistance to heat contact||Test at 300 °C|
|M||Protection for metatarsus|
|AN||Protection for ankle|
|SRA||Slip resistance on ceramic tiles / detergent|
|SRB||Slip resistance on steel ground / glycerine|
|SRC||SRA + SRB|
There is only a protection against the dangers which are designated on the shoe.
The most common requirements are summed up in the following protection classes:
|Category||Basic Requirement||Additional Requirement|
|S1||Closed seat region, antistatic, energy absorption of seat region|
|S2||As for S1, but also water penetration and water absorption of the shoe uppers|
|S3||As for S2, but also penetration resistance of the outsole and cleated outsole|
|Safety Footwear EN ISO 20345||S1||S2||S3|
|Closed seat region|
|Resistance to fuel oil|
|Energy absorption of seat region|