Fire ratings
Fire classes
Class A0 0 minutes
Class A60 60 minutes
Class H0 0 minutes
Class H60 60 minutes
Class H120 120 minutes
Difference between A- and H-fire ratings
A-fire rated doors and walls are tested with a normal ISO standard fire temperature curve. H-fire rated items are
tested with a Hydrocarbon fire curve. The exact difference is the temperature during the testing procedure, H-fire ratd
doors and walls are tested at higher temperatures in a longer time period.
The fire doors and fire walls shall maintain its function with respect to fire resistance and structural integrity when
exposed to a heat load characteristic for cellulosic (A-fire rating) or hydrocarbon (H-fire rating) fire.
Classification
Minimum time in minutes achieved
Integrity and load-bearing capacity Insulation performance
H120 120 120
H60 120 60
H0 120 0
A60 60 60
A0 60 0
Time - Temperature Curves: