Grade 8.8 full threaded rods

iso grade 8.8 threaded rod and bar      ISO grade 8.8 is one kind of alloy quenched and tempered grade in ISO898 standard which is similar to US grades 8 and B7. ISO grade 8.8 threaded rod is usually metric threaded rods.     ISO grade 8.8 Threaded Rod we produce is manufactured with rolled threads instead of cut, free from tears or tool marks typically found in cut threads. So the threaded rods are smoother and have less surface imperfections that may cause possible failure in severe service applications.     ISO grade 8.8 threaded rod is one of the most economical and most common form of threaded rod and in high demand because of its high strength, excellent heat resistance and resistance to corrosion. 1. gr8.8 threaded rods raw material 40Cr or 5140 chemical composition: C SI MN S P CR 0.38-0.43 0.15-0.35 0.50-0.90 0.035(MAX) 0.035(MAX) 0.75-1.20 2. class 8.8 threaded rods mechanical property: Tensile strength Yield strength Elongation Reduction of area Hardness 830 6…

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