Resistance Classifications - CMP Products Texas Inc. Limited

Classifications

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

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.’

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