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оронавирус COVID–19: Информация для клиентов касательно коронавируса COVID-19
оронавирус COVID–19: Информация для клиентов касательно коронавируса COVID-19
Flammability classes
The classification of the ignition and burning resistance characteristics of materials other than metal or ceramic:
| Classification | V-0 | V-1 | V-2 |
| Number of flame applications per sample | 2 x 10 | 2 x 10 | 2 x 10 |
| Maximum burning time of one sample | ≤ 10 | ≤ 30 | ≤ 30 |
| Maximum burning time of five samples | ≤ 50 | ≤ 250 | ≤ 250 |
| Allowable dripping and subsequent ignition of cotton below | No | No | Yes |
| Allowable afterglow remaining for: | ≤ 30 | ≤ 60 | ≤ 60 |
HB – Slow burning on a horizontal specimen; burning rate < 76 mm/min for thickness < 3 mm.
Impact classification
| Classification | Impact energy (J) | Equivalent mass (kg) | Height mm (± 1%) |
| Very light | 0.5 | 0.25 | 200 |
| Light | 1 | 0.25 | 400 |
| Medium | 2 | 0.5 | 400 |
| Heavy | 5 | 1.7 | 300 |
| Very heavy | 20 | 5 | 400 |
Corrosion resistance
| Classification | Typical usage | Mean zinc layer thickness (?m) | Minimum zinc layer thickness (?m) | Salt spray duration (h) |
| Low | Indoor, dry locations | 5 | 3.5 | 24 |
| High | Outdoor, wet locations | 25 | 18 | 192 |
11.2 Resistance to corrosion (IEC 61914)
‘Stainless Steel containing at least 16% chromium need not be tested and are assumed to meet the classification for high resistance to corrosion.’
