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.

G4 chain breaking strength. 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. 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. It is unclear why the wll definition is different for grade 40 chain.

Shop with confidence get free shipping to home or stores price match guarantee. This type is also referred to as grade m in australia. And a breaking strength of 27 600 pounds. Chain grades what does g30 g43 g70 g80 g100 and g120 mean.

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. Since 1968 west marine has grown to over 250 local stores with knowledgeable associates happy to assist. Medium tensile chain is g4 or g40 tensile strength of 400 mpa. Grade 70 transport chain is also called grade 70 truckers chain as it s common in securing loads for over the road hauling.

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. It is not rated safe for overhead lifting. See chart for astm specification number. Its working load limit is nearly twice that of bbb chain and it has the highest weight to working load ratio.

High tensile chain is that made of steel with a tensile strength much above 500 mpa. Ht chain is widely used because of its strength to link factor. 1 2 g4 has a working strength of 9 200 pounds. Breaking strength exceeds that of high test g4 chain 30 stronger than standard grade a shackles depending on sizes forged hot dip galvanized coating on both the shackle and pin working load limit size and logo stamped on every shackle bold black colored pin proof tested load rated bow anchor and d chain types.

In the united states and some other regions this is commonly branded as high test which is not the same as high tensile. Grade 43 chain is embossed using a 43 or a g4.