TABLE 37 MINIMUM BREAKING FORCE OF WIRE ROPE
Compacted Strand Wire Rope
6 x 19 and 6 x 36 Classification/Bright (Uncoated) FC & IWRC
Nominal Diameter Approximate Mass
Minimum Breaking Force*
metric
inches
mm
lb/ft
kglm
tons
tonnes
FC
IWRC
FC
IWRC FC IWRC
FC
IWRC
3/8
9.5 .26
.31
.39 .46 7.39 8.3
6.7 7.53
7/16
11.1
.35 .39 .52
.58
10.0 11.2
9.07 10.2
112
12.7
.46
.49
.68
.73
13.0 14.6
11.8
13.2
9/16
14.3 .57 .63
.85
.94
16.4 18.5 14.9 16.8
5/8 15.9
.71
.78
1.06
1.16
20.2 22.7 18.3
20.6
3/4
19.1
1.03 1.13 1.53 1.68 28.8
32.4 26.1
29.4
7/8 22.2 1.40 1.54 2.08 2.29 39.0
43.8 35.4 39.7
1 25.4 1.82
2.00 2.71
2.98
50.7 56.9
46.0 51.6
1-118
28.6 2.31 2.54
3.44
3.78 63.6
71.5 57.7 64.9
1-114
31.8 2.85
3.14
4.24 4.67 78.2
87.9
70.9 79.7
1-3/8 34.9 3.45
3.80 5.13 5.65 94.1
106 85.4
96.1
1-112
38.1
4.10 4.50
6.10
6.70
111
125
101
113
1-5/8 41.3 4.80 5.27 7.14 7.84 130
146
118
132
1-3/4
44.5 5.56
6.12
8.27 9.11
150 169
136 153
1-7/8
47.6 6.38 7.02 9.49 10.4
171
192
155
174
2
50.8
7.26
7.98
10.8 11.9 193
217
175
197
* To convert to Kilonewtons (kN), multiply tons (minimum breaking force) by 8.896;
1 Ib
= 4.448 newtons (N).
112·
Wire Rope Technical Board - Wire Rope Users Manual. Fourth Edition
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