Ht chain is widely used because of its strength to link factor.
G4 chain breaking strength.
The interesting thing to note is that the breaking strength is 3x grater than the working load giving this type of chain a significant safety margin but still a smaller margin of safety when compared to bbb.
High tensile chain is that made of steel with a tensile strength much above 500 mpa.
Chain is graded based on the ultimate breaking strength of the chain measured in n mm 2 the american society of testing materials astm has published safety standards and regulations for these chain grades.
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Shop read reviews or ask questions about acco grade 43 g4 hot dip galvanized high test chain sold by the foot at the official west marine online store.
The working load limit called out on our anchor shackles is 1 6th of the breaking strength vs the ratio of 1 5th for the grade a shackles.
Chain grades what does g30 g43 g70 g80 g100 and g120 mean.
In the united states and some other regions this is commonly branded as high test which is not the same as high tensile.
It is not rated safe for overhead lifting.
In other words it allows the use of a thinner link which means more chain can be stored in a given chain locker.
1 2 g4 has a working strength of 9 200 pounds.
Grade 43 chain is embossed using a 43 or a g4.
See chart for astm specification number.
It is unclear why the wll definition is different for grade 40 chain.
This type is also referred to as grade m in australia.
And a breaking strength of 27 600 pounds.
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Our anchor chain shackles are strong enough to use with hi test chain just pick one size larger than the chain.
Lower chain grades g30 and g43.
Its working load limit is nearly twice that of bbb chain and it has the highest weight to working load ratio.
The wll wroking load for chain is usually defined of the ubs ultimate breaking strength expressed in pounds for all chain types except g4 grade 40 htchain has the wll defined as 1 3 of the ubs.
Grade 70 transport chain is also called grade 70 truckers chain as it s common in securing loads for over the road hauling.
