CHAIN
PROOF COIL (Grade 30
) – This is the lowest rated grade of welded chain. Used where high strength is not that important. Can be found in binding applications, logging chains and tow chains. (Not for overhead lifting)
GRADE 30
|
SIZE |
WORKING LOAD LIMIT |
|
3/16" (5.5 MM) |
800 lbs |
|
¼" (7 MM) |
1300 lbs |
|
5/16" (8 MM) |
1900 lbs |
|
3/8" (10 MM) |
2650 lbs |
|
½" (13 MM) |
4500 lbs |
|
5/8" (16 MM) |
6900 lbs |
HIGH-TEST (Grade 43) –
Has a higher strength than grade 30 chain; this is a great chain for towing, load binding, and logging applications. (Not for overhead lifting)
GRADE 43
|
SIZE |
WORKING LOAD LIMIT |
|
¼" (7 MM) |
2600 lbs |
|
5/16" (8 MM) |
3900 lbs |
|
3/8" (10 MM) |
5400 lbs |
|
½" (13 MM) |
9200 lbs |
|
5/8" (16 MM) |
11500 lbs |
TRANSPORT CHAIN (Grade 70
) – Stronger than both proof coil and high test, grade 70 chain is the premier chain used in load binding. Great for towing, tie-downs and general applications where high strength is needed. (Not for overhead lifting)
GRADE 70
|
SIZE |
WORKING LOAD LIMIT |
|
¼" (7 MM) |
3150 lbs |
|
5/16" (8 MM) |
4700 lbs |
|
3/8" (10 MM) |
6600 lbs |
|
½" (13 MM) |
11300 lbs |
|
5/8" (16 MM) |
15800 lbs |
ALLOY CHAIN (Grade 80) –
This is the strongest grade of chain offered and the only one recommended for overhead lifting. Used in applications where high strength is needed.
GRADE 80
|
SIZE |
WORKING LOAD LIMIT |
|
9/32" (7 MM) |
3600 lbs |
|
5/16" (8 MM) |
5350 lbs |
|
3/8" (10 MM) |
7500 lbs |
|
½" (13 MM) |
12850 lbs |
|
5/8" (16 MM) |
17800 lbs |
|
¾" (19 MM) |
25650 lbs |
|
7/8" (22 MM) |
34900 lbs |
|
1" (25 MM) |
45600 lbs |
|
1 ¼" (32 MM) |
71250 lbs |