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DIN 5684 STEEL CHAIN FOR LIFTING PURPOSES

Marking of a round-steel chain, grade-8, diameter d=8 mm and tn=24 mm finish bright polished (bp) chain : DIN 5684-8-8x24 bp

DIMENSIONS AND WEIGHTS
Nominal
diameterPitchWidthGauge lengthWeight
dtolerancettoleranceb1 min.b2 max.11xttoleranceKg/m
4±0.212+0.15-0.1513.7132+0.4-0.20.35
5±0.215+0.2-0.1616.9165+0.5-0.30.54
(5)±0.2(18.5)+0.25-0.1616.9203.5+0.7-0.30.5
6±0.218+0.25-0.17.220.2198+0.6-0.30.8
(6)±0.2(18.5)+0.25-0.17.220.2203.5+0.7-0.30. 8
7±0.321+0.3-0.158.423.6231+0.7-0.41.1
(7)±0.3(22)+0.3-0.158.423.6242+0.8-0.41.1
8±0.324+0.3-0.159.627264+0.8-0.41.4
9±0.427+0.35-0.210.830.4297+1-0.51.8
10±0.428+0.35-0.21234308+1-0.52.2
11±0.431+0.4-0.213.237.4341+1.1-0.52.7
13±0.536+0.45-0.2515.644.2396+1.3-0.63.8
14±0.641+0.5-0.316.847.6451+1.4-0.74.4
16±0.645+0.6-0.319.254.4495+1.6-0.85.7
18±0.950+0.65-0.321.661.2550+1.8-0.97.3
20±160+0.8-0.42468660+2-18.8
22±1.166+0.85-0.4526.475726+2.4-1.110.7
For Grade 8
Nominal diameters and pitchs in brackets should be avoided with new constructions.
-Perfect fit of a chain to the sprocket-wheel will be secured, if the sprocked-wheel is placed at manufacturer''s disposal.
-The chain link must not be streched by the joining element of the hoist conveyor in the last link of the chain multiple pitch length.
MECHANICAL PROPERTIES
Grade 5
Nominal diameterWorking load limit of chain forManufacturing test forceAcceptance proof forceBreaking force
dpower driven lifting 1 Bm kghand
operated kgkN min.kN min.kN min.
425032086.312.5
540050012.51020
6600750191530
78001000252040
810001250322550
912501600403263
1016002000504080
11200025006350100
13265033508567132
143200400010080160
1640005000125100200
1850006300160125250
Grade 5For power driven lifting appliancesFor hand operated hoists
Mean stress at working load
limit100 N/mm²125 N/mm²
Mean stress at
manufacturing test force315 N/mm²315 N/mm²
Mean stress at acceptance
proof force250 N/mm²250 N/mm²
Mean stress at breaking
force specified500 N/mm²500 N/mm²
Total ultimate
elongation10 % min.10 % min.
Surface hardness at
all pointsOn a chain link up to 11 mm in diameter330 HV min.330 HV min.
On a chain link over 11 mm in diameter300 HV min.300 HV min.
Ratio of mean stress at
working load limit to mean
stress at manufacturing test
force to mean stress at
breaking force specified1:3, 15:51:2,5:4
Grade 6
Nominal diameterWorking load limit of chain forManufacturing test forceAcceptance proof forceBreaking forceDeflection
dpower driven lifting 1 Bm kghand operated kgkN min.kN min.kN min.f min
4320400108163
55006301612.5254
675090022.41837.55
7100012503225506
8125016004032637
9160020005040807
102000250063501008
112500300075601259
13320042501068517011
144000500012510020012
165000630016012525013
186300800020016032015
Grade 6For power driven lifting appliancesFor hand operated hoists
Mean stress at working load
limit125 N/mm²160 N/mm²
Mean stress at
manufacturing test force400 N/mm²400 N/mm²
Mean stress at acceptance
proof force315 N/mm²315 N/mm²
Mean stress at breaking
force specified630 N/mm²630 N/mm²
Total ultimate
elongation10% min .10% min .
Surface hardness at
all points on a chain link330HV min.330HV min.
Ratio of mean stress at
working load limit to mean
stress at manufacturing test
force to mean stress at
breaking force specified1:3, 15:51:2, 5:4
Grade 8
Nominal diameterWorking load limit of chain forManufacturing test forceAcceptance proof forceBreaking forceDeflection
dpower driven lifting 1 Bm kghand operated kgkN min.kN min.kN min.f min
440050012.510203
56307502015324
690011202822.4455
7125015004030606
8160020005040807
92000250063501007
102500320080631258
113000375095751509
134250530013210621211
145000600015012025012
166300800020016032013
1880001000025020040015
20100001250032025050016
22125001600040032063018
Grade 8For power driven lifting appliancesFor hand operated hoists
Mean stress at working load
limit160 N/mm²200 N/mm²
Mean stress at
manufacturing test force500 N/mm2500 N/mm2
Mean stress at acceptance
proof force400 N/mm2400 N/mm2
Mean stress at breaking
force specified800 N/mm2800 N/mm2
Total ultimate
elongation10% min.10 % min
Surface hardness at
all points on a chain link360 HV min.360 HV min
Ratio of mean stress at
working load limit to mean
stress at manufacturing test
force to mean stress at
breaking force specified1:3, 15:51:2. 5:4
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