U.S.A. Standard Chain
 
Iron Steel / Stainless Steel
Proof Coil Chain ASTM A4313-80
U.S.A. Standard Chain
Uses:Excellent general purpose chain of standard commercial quality for all ordinary applications not requiring high strength-to-weight ratios. Frequently used for fabricating tow chains binding or tie-down chain and logging chains. Do not use for overhead lifting. Elongation minimum 15%. Proof tested.
Standard Material: Low Carbon steel.
Standard Finish: Bright Finished(B.F.). Hot Galvanized(H.G.) and Zine-plated(Z.P.).
Nom.
size
Actual
Bar size
Inside
Length
Ubsude
Width
Weight
100 Ft.
Working
Load
Test
Load
Breaking
Load
in in m/m in m/m in m/m Lb kg Lb kg Lb Lb
1/8 0.157 4.0 0.89 22.6 0.29 7.4 20 9 420 190 850 1700
3/16 0.218 5.5 0.95 24.1 0.40 10.2 41 18.6 800 360 1600 3200
1/4 0.281 7.1 1.00 25.4 0.50 12.7 72 32.7 1330 600 2650 5300
5/16 0.343 8.7 1.10 27.9 0.50 12.7 106 48 2000 910 4000 8000
3/8 0.406 10.3 1.23 31.2 0.62 15.7 155 70.3 2800 1270 5600 11200
1/2 0.531 13.5 1.53 38.9 0.80 20.3 271 123 4800 2190 9650 19300
5/8 0.656 16.7 1.90 48.3 1.00 25.4 1405 184 7400 3350 14800 29600
3/4 0.781 19.8 2.15 54.6 1.12 28.4 582 264 10400 4700 20800 41600
7/8 0.906 23.0 2.50 63.5 1.37 34.8 811 368 14000 6350 28000 56000
1 1.043 26.5 2.75 69.9 1.50 38.1 1045 474 18600 8400 37200 74400s
High Test Chain ASTM A413-80 (GRADE 43)
Uses: Designed for use in load binding, towing,logging and other applications requiring higher strength-to weight ratiosthan Grade 28. Do not use for overhead lifting. Elongation minimum 15%. Proof tested.
Standard Material: High carbon steel. May be heat treated.
Standard Finish: Bright Finished(B.F.)
Packaging: Drums and Wooden Cases.
Nom.
size
Actual
Bar size
Inside
Length
Ubsude
Width
Weight
100 Ft.
Working
Load
Test
Load
Breaking
Load
in in m/m in m/m in m/m Lb kg Lb kg Lb Lb
1/4 0.281 7.1 0.86 21.8 0.40 10.2 80 36.3 2150 975 4300 7750
5/16 0.343 8.7 1.05 26.7 0.48 12.2 111 50.4 3200 1450 6400 11600
3/8 0.406 10.3 1.19 30.3 0.58 14.7 160 72.6 4450 2017 8900 16200
1/2 0.531 13.5 1.43 36.0 0.75 19.1 284 128.6 7650 3470 15300 27600
Chain Astm A413/80 (GRADE 70)
Uses: Designed for use in load binding, towing,logging and many applications requiring higher strength-to-weight ratios than Grade 43. Grade 70 meets stringent Department of Transportationrequlations with smaller chain that is lighter in weight and easier to handle. Do not use for overhead lifting. Minimum Elongation 15%. Proof tested.
Standard Material: Special high-hardenability steel. Heat treated.
Standard Finish: Plated (Yellow ZINC)
Packaging: Drums and Wooden Cases.
Nom.
size
Actual
Bar size
Inside
Length
Ubsude
Width
Weight
100 Ft.
Working
Load
Test
Load
Breaking
Load
in in m/m in m/m in m/m Lb kg Lb kg Lb Lb
1/4 0.281 7.1 0.86 21.8 0.45 11.4 75 34 3150 1430 6250 12600
5/16 0.343 8.7 1.01 25.6 0.46 11.7 111 50.4 4700 2130 9400 18800
3/8 0.406 10.3 1.19 30.2 0.55 14 156 71 6600 2990 13200 26400
Grade 30 Proof Coil Chain (NACM. 1984.11.8)
Nominal
Chain Size
Stock
Size*
mm
Working
Load
Limit
kg
Proof
Test
Knt
Break
Force
Minimum**
KNt
Max
Length per 100
Links
m
Inside
Width
Minimum
mm
3/16 5.5 360 7.1 14.3 2.84 7.7
1/4 7.0 580 11.6 23.1 3.15 9.8
5/16 8.0 760 15.1 30.2 3.28 11.2
3/8 10.0 1200 23.6 47.1 3.50 14.0
1/2 13.0 2030 39.8 79.6 4.55 18.2s
5/8 16.0 3070 60.3 120.6 5.60 20.0
3/4 20.0 4800 94.2

188.5

7.00 25.0
Grade 43 High Test Chain (NACM. 1984.11.8)
Nominal
Chain Size
Stock
Size*
mm
Working
Load
Limit
kg
Proof
Test
Knt
Break
Force
Minimum**
KNt
Max
Length per 100
Links
m
Inside
Width
Minimum
mm
3/16 5.5 520 10.2 20.4 2.48 7.7
1/4 7.0 840 16.6 33.1 3.15 9.8s
5/16 8.0 1100 21.6 43.25 3.28 11.2
3/8 10.0 1720 33.8 67.6 3.50 14.0
1/2 13.0 2900 57.1 114.2 4.55 18.2
Grade 70 Transport Chain (NACM. 1984.11.8)
Nominal
Chain Size
Stock
Size*
mm
Working
Load
Limit
kg
Proof
Test
Knt
Break
Force
Minimum**
KNt
Max
Length per 100
Links
m
Inside
Width
Minimum
mm
3/16 5.5 840 16.6 33.3 2.48 7.7
1/4 7.0 1370 26.9 53.9 3.15 9.8
5/16 8.0 1790 35.2 70.4 3.28 11.2
3/8 10.0 2800 55.0 110.0 3.50 14.0
For size 5.5mm through 13.0mm AISI commercial Wire Tolerances will apply. in size 16.0 and 20mm AISI commercial bar tolerances will apply. This test is a manufacture's acceptance test and should not be used as a criterion for service or design purpose.
Note: All Working load limits. if rounded, were rounded down.
Calculations-Break Force (KN) Area (mm') of one leg 2 grade (kilonewtons) Proof Test(KN)=Break Force/2
Working load limit(kg) Break Force(KN)/4x101.9716.