TABLE 27 MINIMUM BREAKING
FORCE
OF
WIRE ROPE
6 x
25
B, 6 x 27 H & 6 x 30 G Flattened Strand/Bright (Uncoated), Fiber Core
Nominal
Diameter
AEEroximate
Mass
Minimum
Breaking Force*
Improved
Plow
Steel**
Extra
Improved
Extra
Extra
Plow
Steel**
Improved
Plow Steel**
inches
mm
lh/ft
kglm
tons
metric
tons
metric tons metric
tonnes
tonnes
tonnes
112
12.7 0.45
0.67
11.8 10.8 13.0
11.8 14.3
13.0
9/16
14.3
0.57 0.85 14.9 13.5 16.4
14.9
18.0
16.3
5/8 15.9
0.70 1.04 18.3 16.6
20.1 18.2
22.1
20.0
3/4
19.1
1.01 1.50 26.2 23.8
28.8 26.1
31.7 28.8
7/8 22.2
1.39
2.07 35.4 32.1
38.9 35.3
42.8 38.8
1
25.4
1.80 2.68
46.0 41.7
50.6
45.9
55.7
50.5
1-118
28.6
2.28 3.39
57.9
52.5
63.7 57.8
70.1
63.6
1-114
31.8 2.81 4.18
71.0 64.4
78.1 70.9
85.9 77.9
1-3/8
34.9
3.40 5.06 85.5
77.6
94.1 85.4
103
93.4
1-112
38.1 4.05 6.03 101
91.6
111
101
122
111
1-5/8 41.3
4.75
7.07 118 107
130 118
143
130
1-3/4
44.5 5.51
8.20 138 123
152 138
167 151
1-7/8 47.6
6.33 9.42 155 141
171 155
188 171
2
50.8
7.20
10.7 176 160
194 176
213
193
*
To convert
to
Kilonewtons (kN), multiply tons (minimum breaking force)
by
8.896;
lib
= 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.
102 • Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition
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