Use of Grade 80 & 100 Chain under Heat Conditions
Grade of Chain
Temperature Grade 80 Grade 100
°F °C Temp. Reduction of
Rated Load
WHILE at Temperature		 Permanent Reduction of
Rated Load AFTER
Exposure to Temperature		 Temp. Reduction of
Rated Load
WHILE at Temperature		 Permanent Reduction of
Rated Load AFTER
Exposure to Temperature
Below
400		 Below
204		 none none none none
400 204 10% none 15% none
500 260 15% none 25% 5%
600 316 20% 5% 30% 15%
700 371 30% 10% 40% 20%
800 427 40% 15% 50% 25%
900 482 50% 20% 60% 30%
1,000 538 60% 25% 70% 35%
Over
1,000		 Over
538		 Remove
from Service		 Remove
from Service		 Remove
from Service		 Remove
from Service
No reduction in Working Load Limit when using Grade 80 Chain at Temperatures down to -40° Celsius / -40° Fahrenheit.

Chain slings which are fabricated from grade 80 and 100 components the grade 100 temperature rating applies.