Grade 8 Threaded Rod Strength

The threads per inch tpi also varies on the diameter of the rod as follows.

Grade 8 threaded rod strength.

It is also quenched and tempered at 800 f leading to its strength. Where d equals nominal diameter in in. 2020 weaver distributing 10705 west orchard yakima washington 98908 phone. Proof load tensile strength for grade 2 5 8.

There are astm specifications that have similar strength properties which may be easier to find in the form of all thread rod than their sae equivalent. Threaded rods proof load capacities in metric units. Common finishes include plain black zinc plated and hot dip galvanized for. With a minimum tensile strength of 150 ksi and minimum yield of 130 ksi grade 8 has a greater tensile and yield strength compared to other steel grades such as grade 2 grade 5 and b7.

Our grade 8 threaded rods vary in length from 10 to 52 depending on the diameter of the rod. Lug all permatex cabinets scoop drawers polyboxes. Grade 8 steel threaded rods are about 25 stronger than medium strength steel rods. 509 966 8030 toll free.

1 the maximum loads in the table above are based on allowable tensile stress of 12 kpsi reduced by 25 to 9 kpsi allowable stress. And n equals thread per inch. Sae threaded rods do not require permanent grade markings on the ends of the rods like many astm specifications do. 1 kg 9 81 n.

Astm a354 is the classification for grade 8 threaded rod made of high strength steel quenched and tempered. Computed by multiplying the proof load stresses and tensile strengths stresses by the stress area of the thread. As 0 7854 d 0 9743 n squared. Zinc yellow chromate plated steel threaded rods resist corrosion in wet environments.

Astm a354 bd is used for structural bolts while sae j429 grade 8 is an automotive specification. Note that hangers supporting steam water air or gas piping systems should be able to carry the weight of piping insulation valves and other equipment. Threaded rod tds version date. Rod diameter threads per inch.

For proof load yield and tensile strength values for threaded rod refer online to the astm sae and iso mechanical requirements for steel fasteners chart or the industrial fastener institute website and handbook which can be found in resources. Black oxide steel threaded rods have a dark surface color and are corrosion resistant in dry environments. Grade 8 has 0 28 0 55 carbon 0 030 max phosphorus and 0 050 max sulfur. All america threaded products will dual certify to astm a354 bd and sae j429 grade 8.