Calibrated Chain - Break Load, Weight and Volume Guide
Jimmy Green Marine stocks thousands of metres of Calibrated Anchor Chain, including:
Hot Dip Galvanised: Grade 40 from MF Catenificio and Lofrans Grade 43 from Titan DAMS Grade 70 High Strength from MF Catenificio DAMS
Stainless Steel: Grade Grade 40 G4 from William Hackett Cromox Grade 60 G6 and Grade 60 G6 PLUS (A318L) from Ketten Walder
Jimmy Green Break Load Chart Advisory
These break loads are derived from published data and test certificates. The reporting method varies between manufacturers.
Essentially, the ultimate break load depends on the grade, and all manufacturers of the same grade of chain will have similar results.
| 6mm | 7mm | 8mm | 10mm | 12mm | 13mm | 14mm | |
|---|---|---|---|---|---|---|---|
| Weight per metre | 0.8kg | 1.1kg | 1.45kg | 2.3kg | 3.25kg | 3.9kg | |
| Lofrans Grade 40 | 2447kg | 4384kg | 6893kg | 9789kg | |||
| Titan Grade 43 | 4400kg | 7200kg | |||||
| MF Grade 40 in Kn | 3059kg | 4079kg | 6424kg | 9177kg | 10809kg | 12746kg | |
| WH G4 A316L stainless steel in kg | 2000kg | 4000kg | 6400kg | 9600kg | |||
| Cromox G6 Grade 60 in kg | 3823kg | 6424kg | 10197kg | 14531kg | 17029kg | 18865kg | |
| Cromox G6 PLUS Grade 60 in kg | 3925kg | 6730kg | 10605kg | 16315kg | 18049kg | ||
| DAMS MF Grade 70 in Kn | 7138kg | 11217kg |
If you see a break load denoted in Kilonewtons (Kn), you can convert it as follows for comparison:
1 Kn = 101.972 Kg
For an accurate conversion, multiply the Kn value by 101.972 to calculate the break load in kg.
However, for a quick reference, add two zeros onto the Kn value for the approximate strength in kg, e.g. 43Kn becomes 4300kg.
Jimmy Green Marine offers a minimum Grade 40 hot dip galvanised calibrated anchor chain because size for size Grade 40 is approximately 25% stronger than Grade 30.
| Chain Size | Calibration | Grade 30 | Grade 40 |
|---|---|---|---|
| 6mm | DIN766 | 1800kg | 2400kg |
| 7mm | DIN766 | 2500kg | 3000kg |
| 8mm | DIN766 | 3200kg | 4000kg |
| 10mm | DIN766/ISO | 5000kg | 6300kg |
| 12mm | ISO | 7200kg | 9000kg |
| 13mm | DIN766 | 8000kg | 10600kg |
| 14mm | DIN766 | 10000kg | 12500kg |
Grade 43 (Titan) is slightly stronger than Grade 40
Calibrated Chain Volume
How much chain can you fit in your chain locker?
We can't answer your question directly, but we can offer some information which may help:
8mm Chain = approximately 0.42m3 per 1000m (1200m fits in a box 116cm x 76cm x 58cm)
10mm Chain = approximately 0.70m3 per 1000m (600m fits in a box 116cm x 76cm x 48cm)
13mm Chain = approximately 1.40m3 (100m fits in a box 70cm x 57cm x 35cm)