ASTM A193 B7 Full Thread Stud Bolt B16.5 Flange Connection

Company ProfileStud Bolt and NutsA193 B7 Stud Bolt is a bolt with threads on both ends that designed to be screwed into a fixed part at one end, and to receive a nut on the other end. In Petroleum or Chemical industry, they are prominently used for flange connection, so stud bolt used with two nuts on either side is the most common combination which replaces bolt and nut assembly. Certifications  As we know that Stud Bolts have many categories, the type for flange connection is called flange stud bolts, which has fully thread with chambered ends. The theoretical length is measured the thread. Continuous threaded stud bolt is very similar to it, except no chambered ends.Stud Bolt Materials The most common materials for stud bolts (for flanges) are ASTM A193 (grade B7, B8, B8M, B8T), ASTM A453 (grade 660), ASTM A320 (grade L7, L7M), and ASTM A182 (duplex and super duplex bolting). For aggressive fluids and environments, stud bolts can be coated with Xylan/PTFE, Zinc and other materials.ASTM A193 Stud Bolts: Chemical CompositionPhysical ElementASTM A193 grade B7 (AISI 4140)ASTM A193 grade B8 (AISI 304)ASTM A193 grade B8M (AISI 316)Carbon0.38 - 0.48%0.08% max0.08% maxManganese0.75 - 1.00%2.00% max2.00% maxPhosphorus, max0.035%0.045%0.045%Sulfur, max0.040%0.030%0.030%Silicon0.15 - 0.35%1.00% max1.00% maxChromium0.80 - 1.10%18.0 - 20.0%16.0 - 18.0%Nickelabsent8.0 - 11.0%10.0 - 14.0%Molybdenum0.15 - 0.25%absent2.00 - 3.00%ASTM A193 Stud Bolts: Mechanical PropertiesASTM A193SizeMin Tensile Strength (KSI)Min Yield Strength (KSI)Min Elongation (%)RA % minMax HBWMax HRCASTM A193 grade B7Up to 2-1/21251051650321352-5/8 - 41159516504-1/8 - 7100751850ASTM A193 grade B8 Class 1All7530305022335ASTM A193 grade B8M Class 1All7530305022396ASTM A193 grade B8 Class 2Up to 3/41251001235321357/8 - 11158015351-1/8 - 1-1/41056520351-3/8 - 1-1/2100502845ASTM A193 grade B8M Class 2Up to 3/4110951545321357/8 - 11008020451-1/8 - 1-1/4956525451-3/8 - 1-1/290503045  The material chosen for the threaded stud and the hex nuts should be compatible. Materials for bolting sets shall be selected based on the process's working temperatures, as shown in the table below: TEMPERATURE °C ( °F )STUD BOLTS MATERIALSMIN.MAX.CARBON STEEL-29 (-20)300 (572)A193 B7, L7-73 (-100)400 (752)A193 B60 (32)500 (932)A193 B8-200 (-325)575 (1067)A193 B160 (32)520 (968)A193 B17B-29 (-20)650 (1202)A913 Inconel 7180 (32)750 (1382)A453 Gr. 660-29 (20)538 (1000)  ASTM A453 Stud Bolts for High-Temp. ServiceASTM A320 Stud Bolts for Low-Temp. Service   Stud Bolts' CoatingStud bolts can be coated to increase the resistance to corrosion. The most common types of coatings for stud bolts are listed below:Electro zinc platingElectro cadmium platingHot dip galvanizingPTFE CoatingPhosphate coatingElectroless nickel platingZinc-nickel coatingAluminum coatingSilver coatingZinc/Nickel by electrodepositionXylan coating  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1