Specification for High-Strength Low-Alloy Columbium-Vanadium Steels of Structural Quality.This specification covers the standard requirements for Grades 42,50,55,60,and 65,of high-strength low-alloy columbium-vanadium structural steel shapes,plates,sheet piling,and bars for applications in bolted,welded,and riveted structures in Bolt Depot - Selecting Fastener Materials - Steel Grades Grade 8 bolts have 6 evenly spaced radial lines on the head.Grade G is roughly equivalent to Grade 8.Grade G nuts are used with Grade 8 bolts.Alloy Steel.Alloy steel bolts are made from a high strength steel alloy and are further heat treated.
Steel Pipe,Galvanized Steel Pipe,Carbon Steel Pipe manufacturer / supplier in China,offering Low Price High Quality Tinplate Security Metal Sealing Strips,SPCC Mr Tin Coating Bright Tinplate Coil Strip,Food Packing Tin Plate 2.8/2.8 Mr T4 Electrolytic Tinplate Coil and so on.High Quality Steel - Metal Fabrication MK Metal Co.The steel making process removes impurities within the raw iron such as silicon,nitrogen,phosphorus,sulfur and carbon.Steel is also used in a bevy of indust -High Strength Steel Plate
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Grade UNS No.Mechanical properties specied (Note 4) Common form Treatment Tensile strength MPa (min.) Yield strength (0.2% offset) MPa (min.) Elongation % in 50mm (min.) Hardness (max) (Note 2) Austenitic stainless steels Plate Annealed 600 310 40 95 HRB Sheet Annealed 515 205 40 95 HRB or coil 1/4 to full hard 860 - 1275 515 - 965 25 - 9