Qbh Customized ASTM A193 B7/B7m Alloy Brass Carbon Stainless Steel HDG Half Fully Thread Construction Building Materials Fastener Threaded Rods Formwork

DescriptionASTM A193 Grade B7 specification covers requirements for high tensile alloy steel bolting materialfor use in high temperature or high-pressure service and other special purpose applications.It is a standard specification defining typical chemical composition, mechanical properties, hardnessrequirement, preferential heat treatment, product marking, certification and other requirements,suitable for bolting used inPressure Vessel Service, Valves, Flanges and Fittings. ASTM A193defines both SI (Metric) and inch-pound units.Grade B7 is a heat-treated chromium-molybdenum low-alloy steel with minimum tensile strengthrequirement of 125 ksi (860 Mpa), yield 105 ksi (720 Mpa), and maximum hardness of 35HRC.Boltport uses Alloy Steel AISI 4140 bar stock or forging stock to produce B7 headed and non-headedbolts. A193 Grade B7 is the most commonly used Bolt specification coupled with A194 Grade2H Nuts for Bolting Carbon Steel pipeline. A193 B7 bolting is available in metric sizes fromM6 to M180 and imperial sizes from 1/4 to 7 inches, in diameter.Find information on ASTM A193 Grade B7 chemical composition, mechanical properties such astensile strength; yield strength, hardness, marking requirements and reference product standards. 0.25 Inch To 4 Inch B8M ASTM A193 Grade B7 Threaded RodOriginally approved in 1936, this specification is heavily utilized in petroleum and chemical construction applications. The ASTMstandard covers alloy steel and stainless steel bolting materials for high temperature or high pressure service. This specificationincludes fasteners intended for use in pressure vessels, valves, flanges, and fittings. Although, this material is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are specified 8 threads per inch (tpi) fordiameters above one inch.Below is a basic summary of a few of the common grades. ASTM A193 covers a number of other standard specifications notcovered in this description including B5, B6, and B16.SpeciticationsStandard:ASTM A193 B7/B7m Stud Bolt Full Thread Rods WZP Carbon SteelGrade:1/4"- 4"SupplierQBHWebqbfastener.en.made-in-china.comSize:B7/B7mLength:Standard or Non-standard as Request & DesignSurface Treament:Black, Zinc Plated, Zinc (Yellow) Plated, H.D.G. ,Dacromet,etc.Material:Carbon Steel, Alloy Steel, Stainless Steel,etc.Packing:25 kgs per box, 36 box per pallet, 900 kgs per pallet Sample:Sample are FreePhoto DetailsASTM A193 Grade B7 Chemical CompositionElementsRangeProduct Variation, Over or Under BCarbon0.37-0.49 % D0.02 %Manganese, max0.65-1.10 %0.04 %Phosphorus, max0.035 %0.005 % overSulfur, max0.040 %0.005 % overSilicon0.15 - 0.35 %0.02 %Chromium0.75-1.20 %0.05 %Molybdenum0.15-0.25 %0.02 %  B Product analysis - Individual determinations sometimes vary from the specified limits on ranges asshown in the tables. The several determinations of any individual element in a heat may not varyboth above and below the specified range.D For bar sizes over 31/2 in. [90 mm], inclusive, the carbon content may be 0.50 %, max. For theB7M grade, a minimum carbon content of 0.28 % is permitted, provided that the required tensileproperties are met in the section sizes involved; the use of AISI 4130 or 4130H is allowed.Heat TreatmentB7 and B7M shall be heat treated by quenching in a liquid medium and tempering. For B7M fasteners,the final heat treatment, which may be the tempering operation if conducted at 1150 °F [620 °C] minimum,shall be done after all machining and forming operations, including thread rolling and any type of cutting.Surface preparation for hardness testing, nondestructive evaluation, or ultrasonic bolt tensioning is permitted.Unless otherwise specified, material for Grade B7 may be heat-treated by the Furnace, the Inductionor the Electrical Resistance method. ASTM A193 Grade B7 Mechanical Properties - Metric SizesDiameter mmMin Tempering Temperature, °CTensile Strength min, MPaYield strength, min, 0.2% offset, MPaElongation in 4D min, %Reduction of Area, min, %Hardness, maxM64 and Under5938607201650321 HBW or 35 HRCover M64 to M1005937956551650321 HBW or 35 HRCover M100 to M1805936905151850321 HBW or 35 HRC   ASTM A193 Grade B7 Mechanical Properties - Inch SizesDiameter InchMin Tempering Temperature, °CTensile Strength min, ksiYield strength, min, 0.2% offset, ksiElongation in 4D min, %Reduction of Area, min, %Hardness, max2.5 and under11001251051650321 HBW or 35 HRCover 2.5 to 41100115951650321 HBW or 35 HRCover 4 to 71100100751850321 HBW or 35 HRC   ASTM A193 Grade B7 Bolt MarkingQBH B7"QBH" Manufacturer's Logo & "B7" Grade Marking A193 GradesB7Alloy steel, AISI 4140/4142 quenched and temperedB8Class 1 Stainless steel, AISI 304, carbide solution treated.B8MClass 1 Stainless steel, AISI 316, carbide solution treated.B8Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardenedB8MClass 2 Stainless steel, AISI 316, carbide solution treated, strain hardenedA193 Mechanical PropertiesGra