The EN ISO 11612 standard specifies performance requirements for clothing
worn during activities where there is a need for a garment with limited flame spread properties and where the user can be exposed to radiant or convective or contact heat or to molten metal splashes.
A. Burning behaviour
no puncture;
no flaming;
no debris;
after-flame time ≤ 2 s;
after-glow time ≤ 2 s.
B. Convective heat
Garments that claim to offer protection against convective heat must meet at least performance level B1 in the following table:
Performance level HTI 24 (s)
B1
B2
B3
MIN MAX
4.0 < 10.0
10.0 < 20.0
20.0
C. Radiant heat
Tested at a heat flow density of 20 kw/m2, garments that offer protection against radiant heat must meet at least performance level C1 in the following table:
Performance level
RHTI 24 (s)
C1
C2
C3
C4
MIN MAX
7.0 MAX
20.0 < 20.0
50.0 < 50.0
95.0 < 95.0
D. Molten aluminum splashes
Garments that claim to offer protection against molten aluminum splashes must meet at least performance level D1 in the following table:
level C1 in the following table:
Performance level
MOLTEN ALUMINIUM (G)
D1
D2
D3
MIN MAX
100 < 200
200 < 250
350
E. Molten iron splashes
Garments that claim to offer protection against molten iron splashes must meet at least performance level E1 in the following table:
Performance level MOLTEN IRON (g)
E1
E2
E3
MIN MAX
60 < 120
120 < 200
200
F. Contact heat
When tested at a temperature of 250º C, garments that offer protection against contact heat must meet at least performance level F1 in the following table:
Performance level THRESHOLD TIME (s)
F1
F2
F3
MIN MAX
5.0 < 10.0
10.0 < 15.0
15.0
EN ISO 11612
Products for this standard
