TABLE
21
MINIMUM
BREAKING
FORCE
OF
WIRE
ROPE
6 x
19
Classification/Bright (Uncoated), Fiber
Core
Nominal Diameter
AEEroximate Mass
Minimum
Breaking Force*
Improyed Plow Stee1** Extra Improved Plow**
inches
mm
Ib/ft kglm tons metric tonnes
tons metric tonnes
114
6.4
0.11 0.16
2.74 2.49
3.02
2.74
5/16
7.9
0.16 0.24
4.26
3.86 4.69
4.25
3/8
9.5 0.24 0.35
6.10
5.53 6.72
6.10
7/16 11.1
0.32 0.48
8.27 7.50
9.10
8.26
112
12.7 0.42
0.63
10.7
9.71 11.8
10.7
9/16 14.3 0.53
0.79
13.5
12.2
14.9 13.5
5/8 15.9
0.66
0.98
16.7 15.1
18.3
16.6
3/4
19.1
0.95
1.41 23.8 21.6
26.2
23.8
7/8 22.2 1.29
1.92
32.2 29.2
35.4
32.1
1 25.4
1.68
2.50
41.8 37.9
46.0
41.7
1-1/8 28.6 2.13
3.17
52.6
47.7 57.8
52.4
1-114
31.8 2.63
3.91
64.6 58.6
71.1 64.5
1-3/8 34.9 3.18 4.73 77.7
70.5 85.5
77.6
1-1/2
38.1 3.78 5.63
92.0
83.5
101
91.6
1-5/8 41.3 4.44
6.61 107
97.1 118
107
1-3/4 44.5
5.15
7.66 124
112 137
124
1-7/8
47.6 5.91 8.80
141
128 156
142
2
50.8 6.72 10.0 160
145
176
160
2-118
54
7.59 11.3 179
162
197 179
2-114
57.2 8.51 12.7 200
181
220 200
*
To
convert to Kilonewtons (kN), multiply tons (minimum breaking force) by 8.896;
1 Ib
= 4.448 newtons (N).
**
Minimum breaking forces listed above apply to ropes with bright
or
drawn galvanized wires. Minimum breaking forces are
10% lower for ropes with wires galvanized at finish size.
96·
Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition
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