Quality Inspection for Crane Lifting Chains - Lifting Chain – Dia 24mm EN 818-2 Grade 80 (G80) chains – Chigong
Quality Inspection for Crane Lifting Chains - Lifting Chain – Dia 24mm EN 818-2 Grade 80 (G80) chains – Chigong Detail:
Category
Application
Lifting and lashing, loads lifting, loads binding
Chain Parameter
SCIC Grade 80 (G80) chains for lifting are made as per EN 818-2 standards, with nickel chromium molybdenum manganese alloy steel per DIN 17115 standards; well designed / monitored welding & heat-treatment ensure chains mechanical properties including test force, breaking force, elongation & hardness.
Figure 1: Grade 80 chain link dimensions
Table 1: Grade 80 (G80) chain dimensions, EN 818-2
|
diameter |
pitch |
width |
unit weight |
|||
|
nominal |
tolerance |
p (mm) |
tolerance |
inner W1 |
outer W2 |
|
|
6 |
± 0.24 |
18 |
± 0.5 |
7.8 |
22.2 |
0.8 |
|
7 |
± 0.28 |
21 |
± 0.6 |
9.1 |
25.9 |
1.1 |
|
8 |
± 0.32 |
24 |
± 0.7 |
10.4 |
29.6 |
1.4 |
|
10 |
± 0.4 |
30 |
± 0.9 |
13 |
37 |
2.2 |
|
13 |
± 0.52 |
39 |
± 1.2 |
16.9 |
48.1 |
4.1 |
|
16 |
± 0.64 |
48 |
± 1.4 |
20.8 |
59.2 |
6.2 |
|
18 |
± 0.9 |
54 |
± 1.6 |
23.4 |
66.6 |
8 |
|
19 |
± 1 |
57 |
± 1.7 |
24.7 |
70.3 |
9 |
|
20 |
± 1 |
60 |
± 1.8 |
26 |
74 |
9.9 |
|
22 |
± 1.1 |
66 |
± 2.0 |
28.6 |
81.4 |
12 |
|
23 |
± 1.2 |
69 |
± 2.1 |
29.9 |
85.1 |
13.1 |
|
24 |
± 1.2 |
72 |
± 2.1 |
30 |
84 |
14.5 |
|
25 |
± 1.3 |
75 |
± 2.2 |
32.5 |
92.5 |
15.6 |
|
26 |
± 1.3 |
78 |
± 2.3 |
33.8 |
96.2 |
16.8 |
|
28 |
± 1.4 |
84 |
± 2.5 |
36.4 |
104 |
19.5 |
|
30 |
± 1.5 |
90 |
± 2.7 |
37.5 |
105 |
22.1 |
|
32 |
± 1.6 |
96 |
± 2.9 |
41.6 |
118 |
25.4 |
|
36 |
± 1.8 |
108 |
± 3.2 |
46.8 |
133 |
32.1 |
|
38 |
± 1.9 |
114 |
± 3.4 |
49.4 |
140.6 |
35.8 |
|
40 |
± 2 |
120 |
± 4.0 |
52 |
148 |
39.7 |
|
45 |
± 2.3 |
135 |
± 4.0 |
58.5 |
167 |
52.2 |
|
48 |
± 2.4 |
144 |
± 4.3 |
62.4 |
177.6 |
57.2 |
|
50 |
± 2.6 |
150 |
± 4.5 |
65 |
185 |
62 |
Table 2: Grade 80 (G80) chain mechanical properties, EN 818-2
|
diameter |
working load limit |
manufacturing proof force |
min. breaking force |
|
6 |
1.12 |
28.3 |
45.2 |
|
7 |
1.5 |
38.5 |
61.6 |
|
8 |
2 |
50.3 |
80.4 |
|
10 |
3.15 |
78.5 |
126 |
|
13 |
5.3 |
133 |
212 |
|
16 |
8 |
201 |
322 |
|
18 |
10 |
254 |
407 |
|
19 |
11.2 |
284 |
454 |
|
20 |
12.5 |
314 |
503 |
|
22 |
15 |
380 |
608 |
|
23 |
16 |
415 |
665 |
|
24 |
18 |
452 |
723 |
|
25 |
20 |
491 |
785 |
|
26 |
21.2 |
531 |
850 |
|
28 |
25 |
616 |
985 |
|
30 |
28 |
706 |
1130 |
|
32 |
31.5 |
804 |
1290 |
|
36 |
40 |
1020 |
1630 |
|
38 |
45 |
1130 |
1810 |
|
40 |
50 |
1260 |
2010 |
|
45 |
63 |
1590 |
2540 |
|
48 |
72 |
1800 |
2890 |
|
50 |
78.5 |
1963 |
3140 |
|
notes: total ultimate elongation at breaking force is min. 20%; |
|||
| changes of Working Load Limit in relation to temperature | |
| Temperature (°C) | WLL % |
| -40 to 200 | 100% |
| 200 to 300 | 90% |
| 300 to 400 | 75% |
| over 400 | unacceptable |
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