Grade 8 Threaded Rod Tensile Strength

Astm a354 is the classification for grade 8 threaded rod made of high strength steel quenched and tempered.

Grade 8 threaded rod tensile strength.

Threaded rod high tensile 8 8 steel galvanised din 975 2411392. Grade a headed bolts threaded rods and bent bolts intended for general applications. Grade 8 is typically provided plain finish only due to the potential risk of hydrogen embrittlement when plated or galvanized. Sae threaded rods do not require permanent grade markings on the ends of the rods like many astm specifications do.

For technical drawings and 3 d models click on a part number. Strength specifications of stainless steel threaded fasteners. Black oxide steel threaded rods have a dark surface color and are corrosion resistant in dry environments. Grade b heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges.

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. Proof loads and tensile strengths are computed by multiplying the proof load stresses and tensile strengths stresses by the stress area of the thread. High tensile grade 8 8 fully threaded galvanised studding. Zinc yellow chromate plated steel threaded rods resist corrosion in wet environments.

Ultimate tensile and proof loads for metric bolts according iso 898 1 mechanical properties of fasteners made of carbon steel and alloy steel part 1. 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. As 0 7854 d 0 9743 n squared where d equals nominal diameter in in.

Mass and weight the difference. Bolts screws and studs with specified property classes coarse thread and fine pitch thread. Grade 8 steel threaded rods are about 25 stronger than medium strength steel rods. Common finishes include plain black zinc plated and hot dip galvanized for grades 2 and 5.

1 kg 9 81 n. This table shows the mechanical properties of b7 grade 5 and grade 8. 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. Tensile strength ksi min 75 0 113 4 116 8 2 2 0 astm f606 f606m 16 mtm 14.

The second figure signifies that the fastener will begin to yield at 80 of the ultimate tensile strength i e. In the case of a 8 8 grade bolt the first figure signifies that the tensile strength is at least 800mpa. M36 x 3 metre long studding threaded rod.