| EN818 GRADE 80 ALLOY CHAIN | ||||||||
| size | DIA | Inside length | Inside width | working Load max | proof test min | breaking force min | weigh per 100ft | weigh per meter | 
| 1/4 | 6mm | 18mm | 8.7mm | 1150kg | 22.5kn | 45kn | 24.3kg | 0.80 | 
| 7mm | 22mm | 10.5mm | 1570kg | 30.8kn | 61.6kn | 33.0kg | 1.08 | |
| 5/16 | 8mm | 24mm | 12mm | 2050kg | 40.3kn | 80.6kn | 43.5kg | 1.43 | 
| 9mm | 27mm | 12mm | 2500kg | 50.8kn | 102kn | 54.8kg | 1.80 | |
| 3/8 | 10mm | 30mm | 14.5mm | 3200kg | 63kn | 126kn | 67.6kg | 2.22 | 
| 1/2 | 13mm | 39mm | 19mm | 5400kg | 107kn | 214kn | 113.6kg | 3.73 | 
| 13mm | 82mm | 24mm | 5400kg | 107kn | 214kn | 88.4kg | 2.90 | |
| 5/8 | 16mm | 48mm | 23mm | 8200kg | 161kn | 322kn | 170.3kg | 5.58 | 
| 3/4 | 19mm | 47mm | 26mm | 11200kg | 227kn | 454kn | 243.8kg | 8.00 | 
| 20mm | 60mm | 28mm | 12500kg | 250kn | 500kn | 274.3kg | 9.00 | |
| 7/8 | 22mm | 66mm | 29.5mm | 15000kg | 300kn | 600kn | 332kg | 10.90 | 
| 1 | 26mm | 78mm | 35mm | 20000kg | 400kn | 800kn | 463kg | 15.20 |