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B. CONVECTIVE HEAT
Garments which claim to offer protection against convective heat shall meet at least performance level b1 in the following table:
| PERFORMANCE LEVEL | HTI 24(s) | ||||
| MIN | MAX | ||||
| B1 | 4.0 | < 10.0 | |||
| B2 | 10.0 | < 20.0 | |||
| B3 | 20.0 | ||||
C. RADIANT HEAT
Tested at a heat flux density of 20 kw/m2, garments which are claimed to offer protection against radiant heat shall meet at least performance level c1 in the following table:
| PERFORMANCE LEVEL | RHTI 24(s) | ||||
| MIN | MAX | ||||
| C1 | 7.0 | < 20.0 | |||
| C2 | 20.0 | < 50.0 | |||
| C3 | 50.0 | < 95.0 | |||
| C4 | 95.0 | ||||
D. MOLTEN ALUMINIUM SPLASHES
Garments which are claimed to offer protection against molten aluminium splashes shall meet at least performance level d1 in the following table:
| PERFORMANCE LEVEL | MOLTEN ALUMINIUM | ||||
| MIN | MAX | ||||
| D1 | 100 | < 200 | |||
| D2 | 200 | < 350 | |||
| D3 | 350 | ||||
E. MOLTEN IRON SPLASHES
Garments which are claimed to offer protection against molten iron splashes shall meet at least performance level e1 in the following table:
| PERFORMANCE LEVEL | MOLTEN IRON | ||||
| MIN | MAX | ||||
| E1 | 60 | < 120 | |||
| E2 | 120 | < 200 | |||
| E3 | 200 | ||||
F. CONTACT HEAT
When tested at a temperature of 250oc, garments which are claimed to offer protection against contact heat shall meet at least performance level f1 in the following table:
| PERFORMANCE LEVEL | THRESHOLD TIME (S) | ||||
| MIN | MAX | ||||
| F1 | 5.0 | < 10.0 | |||
| F2 | 10.0 | < 15.0 | |||
| F3 | 15.0 | ||||