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.
Grade 100 chain wll.
Do not exceed working load limits wll.
Maximum working load limit wll in tonnes assumes the use of a 100 rated shortening hook.
Resources working load limit guides grade 100 chain sling wll guide.
Meets or exceeds all existing osha government nacm and astm specification requirements.
When using fittings with chain you must match the trade size and meet or exceed the chain s grade.
This chain is approximately 25 stronger than grade 80 chain.
For basket slings and engineered lifts please consult as 3775 parts 1 or 2 accordingly.
Australian standard as 3775 2014.
It s heat treated and stamped with the grade and manufacturer.
Grade 100 is on average a 25 greater working load limit wll over grade 80.
Grade 100 chain slings.
Grade 80 grade 100 alloy chain single leg sling double leg sling triple quad leg sling size.
Chain grades advertised by manufacturers are one tenth of the actual mathematical grades.
Determining chain working load limits.
That number is the chain grade.
Peerless 3 8 grade 100 alloy chain is quenched and tempered.
So grade 80 is really 800 and grade 120 is 1 200.
All grade 100 chain and fittings meet and exceed australian standards all chain slings supplied by ranger are nata proof tested and tagged.
You could reverse this formula to determine ultimate breaking strength if all you know if the chain grade.
Astm states that alloy chain shall be able to elongate a minimum of 20 before fracture 7 3 5.
This heavy duty lifting chain has a wll up to 8 800 lbs.
Grade 100 chain is quickly becoming the more popular choice for construction manufacturing and rigging companies grade 100 chains is approved for overhead lifting applications.
Users can experience more working power wll with a smaller diameter chain based upon application.
Grade 100 lifting chain working load limits wll loading factors 10 75 1 31 73 1 41 2 25 4 0 63 0 5 0 4 0 8 1 1 0 9 0 63 0 8 1 4.
Grade 100 chain is 25 stronger than grade 80 chain allowing for easier handling and increased efficiency due to its higher alloy content grade 100 chain is also more rugged and resistant to fatigue.
Proof tested to 200 of working load limit.
Zinc plated steel chain has good corrosion resistance.
Never use to lift people or items over people.