CROSBY ® PLATINUM LINE
f. Mechanical coupling links shall not be used within the body of an alloy chain sling to connect two pieces of chain. g. Modifications or alterations to the sling or components shall be considered as repairs and shall conform to all other pro- visions of EN1677 or ASME B30.9. h. All repairs shall comply with the proof test requirements of EN1677 or ASME B30.9 Section 9-1.6.
e. Bent, twisted, or deformed chain links or components f. Evidence of heat damage. g. Excessive pitting or corrosion. h. Lack of ability of chain or components to hinge (articulate) freely. i. Weld spatter. j. For hooks, removal criteria as stated in EN1677 or ASME B30.10 k. Other conditions, including visible damage, that cause doubt as to the continued use of the sling. Repair a. Slings shall be repaired only by the sling manufacturer or a qualified person. b. A repaired sling shall be marked to identify the repairing agency per EN818 or ASME B30.9 Section 9-1.7. c. Chain and components used for sling repair shall comply with the provisions of EN1677 or ASME B30.9. d. Repair of hooks shall comply with EN1677 or ASME B30.10. e. Cracked, broken or bent chain links or components other than hooks shall not be repaired; they shall be replaced.
Table 3 Minimum Allowable Chain Link Thickness at Any Point Minimum Thickness (in.) (mm) Nominal Chain Size (in.) (mm)
7/32 9/32 5/16 3/8 1/2 5/8 3/4 7/8 1 1-1/4
5.5 7 8 10 13 16 20 22 26 32
0.189 0.239 0.273 0.342 0.443 0.546 0.687 0.750 0.887 1.091
4.80 6.07 6.93 8.69
11.26 13.87 17.45 19.05 22.53 27.71
Refer to ASME B30.9
Table 4 Grade 100 (Spectrum 10 ® ) Alloy Chain Working Load Limit — 4 to 1 Design Factor
β
β β
CHOKER HITCH * (t)
TWO LEG SLINGS
TRIPLE AND FOUR-LEG SLINGS
NOMINAL SIZE OF SLING (mm)
0º<ß ≤ 45º (t)
45º<ß ≤ 60º (t)
0º<ß ≤ 45º (t)
45º<ß ≤ 60º (t)
SINGLE LEG (t)
2.24 3.20 4.00 6.40
2.12 3.00 3.75 6.00 10.0 15.0 21.0 28.0 31.5 40.0 60.0
3.00 4.20 5.30 8.00 14.0 21.2 30.0 39.4 44.4 57.0 85.0
1.40 2.00 2.50 4.00 6.70 10.0 14.0 18.8 21.0 27.0 40.0
2.00 2.80 3.55 5.60 9.50 14.0 20.0 27.0 29.5 38.0 56.0
1.40 2.00 2.50 4.00 6.70 10.0 14.0 18.8 21.0 27.0 40.0
6 7 8
10 13 16 19 22 23 26 32
10.70 16.00 22.40 30.10 33.50 43.00 64.00
* If a Crosby A-1338 Cradle Grab Hook is used at a minimum angle of choke of 120 degrees, the full sling rated WLL (Single leg) can be utilized.
Table 5 Grade 80 (Spectrum 8 ® ) Alloy Chain Working Load Limit — 4 to 1 Design Factor
β β
β
NOMINAL SIZE OF SLING (mm)
TWO LEG SLINGS
TRIPLE AND FOUR-LEG SLINGS
CHOKER HITCH * (t)
0º<ß ≤ 45º (t)
45º<ß ≤ 60º (t)
0º<ß ≤ 45º (t)
45º<ß ≤ 60º (t)
SINGLE LEG (t)
0.90 1.20 1.60 2.50 4.25 6.40 9 12 12.80 17 25.20
1.70 2.24 3 4.75 8 11.80 17 22.40 25 31.50 47.50
2.36 3.15 4.25 6.70 11.20 17 23.60 31.50 35.50
1.12 1.50 2
1.60 2.12 2.80 4.25 7.50 11.20 16 21.20 23.60
1.12 1.50 2
6 7 8
3.15 5.30 8 11.20
3.15 5.30 8 11.20 15 21.20 21.20 31.50
10 13 16 19-20
15 16
22 23 26 32
45 67
21.20 31.50
30 45
* If a Crosby A-1338 Cradle Grab Hook is used at a minimum angle of choke of 120 degrees, the full sling rated WLL (Single leg) can be utilized.
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