Grade 30 Chain Specifications

Every foot of proof coil grade 30 high test grade 43 and transport grade 70 chains are proof tested.

Grade 30 chain specifications.

Grade 30 chain is a general purpose carbon steel chain for farm industrial and home applications such as log chain cargo lashing pipeline hanging tailgate guard rail tow and switch chain. We also added information on the grade 30 chain and grade 43 chain. To ensure that alloy chain consistently meets this requirement astm requires the use of certain alloying elements in the manufacturing of the steel for alloy steel chain. The grade number used by manufacturers is an indicator toward the ultimate break strength of chain.

Grade 30 aka proof coil has less carbon and is good service duty chain. Grade 30 proof coil self color regular link grade 30 proof coil self color long link grade 30 proof coil electro galvanized regular link grade 30 proof coil electro galvanized long link grade 30 hot dipped galvanized. Not for overhead lifting. Astm states that alloy chain shall be able to elongate a minimum of 20 before fracture 7 3 5.

The american society of testing materials astm has published safety standards and regulations for these chain grades. Chain is graded based on the ultimate breaking strength of the chain measured in n mm 2. It is designed for use in towing binding logging and other applications requiring high strength chain. Alloy chain grade 80 or grade 100 should be used for overhead lifting.

With galvanized chain it basically boils down to how much carbon is in the steel. Nacm welded steel chain specifications adopted april 26 2003 6 8 1 1 5 16 8 7 mm and 3 8 10 mm grade 43 and 70 chain shall be embossed at intervals no greater than 1 ft. Grade 30 galvanized steel proof coil chain grade 30 proof coil chain is a heavy duty grade 30 proof coil chain is a heavy duty high strength welded steel chain. Lower chain grades g30 and g43 grade 30 chain.

See chart for astm specification number. Grade 30 is an excellent all purpose commercial quality chain. Do not use for lifting people or loads over people. The higher the grade the greater the break strength.

Where attachments such as hooks or rings are desired for use with chain in sustaining loads care should be taken to select the attachments of the type grade and size compatible with the chain with which the attachments are intended to. Welded chain specifications 2020 04 16t14 17 26 04 00 proof coil chain grade 30 a general utility chain for such uses as log chain cargo lashing chain pipe line hanging chain tailgate guard rail tow and switch chain.