Today, however, the premium manufacturers’ eye-catching powder coating has another important characteristic in addition to good visibility and optimal corrosion protection. The coating is a heat indicator. It changes colour permanently under temperature influence and provides information about a potential reduction of the load-carrying capacity. With controlled, consistent coating and colouring, this colour change can be tested very accurately under laboratory conditions and recorded in a colour chart. The colour chart then serves as a simple aid for determining the maximum temperature reached.
The colour change is already relevant when temperatures of 100°C are exceeded. Permanent reduction of the load-carrying capacity in the lifting equipment can occur, decreasing slightly from 100°C and significantly above 200°C.
These reductions are usually determined under laboratory conditions and given as percentage reduction factors.
REDUCTION OF LOAD-CARRYING CAPACTIY UNDER TEMPERATURE INFLUENCE
The long-standing Meusburger partner RUD Ketten, for example, sums up the load capacity as follows:
E 1271 & E 1272 & E 1274
under -40 °C
-40 °C to 100 °C
100 °C to 200 °C
200 °C to 250 °C
250 °C to 350 °C
over 350 °C
inadmissable
100%
85%
80%
75%
inadmissable