var tensile = 105000; Metric bolt grades and strength calculator to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10.9 and 12.9. } if (load == 'astm307') { function check(na){ var shear = 63000; Some notes from ISO 898 metric screw threads standards: I accept the terms and conditions set forth above. document.getElementById("min-tensile").value = minTensileStrength(tensile,tensileStressArea(diameter,series)) + " lbs"; var yield = null; d = nominal bolt diameter (m, ft) F = axial bolt force (N, lb f) l … return value; Type must been Number!! Services & Solutions > return 0.7854 * Math.pow((dia - (0.9743 / tpi) ), 2); } else if (load == 'sae8') { var proof = 135000; var unc = [20, 18, 16, 14, 13, 12, 11, 10, 9, 8, 7, 7, 6, 6]; ").length - 1) >= 2 || (str.split("\$").length - 1) >= 2 || (str.split("%").length - 1) >= 2){ The tensile strength is measured by the maximum stress that a material can withstand while being stretched or pulled before breaking. (psi) s tensile = Ultimate Yield Strength (lbs) t min = Minimum tensile strength of the bolt grade, ASTM, SAE, etc. var shear = 72000; } } else { The strength data is assumed to be accurate at room temperature only and for applications that expose the fastener to extreme temperatures or for other questions related to the content below, contact the Fastenal Engineering & Design Support at engineer@fastenal.com. var value = Math.round(mss * tsa); In the event your use of this calculator results in the need for servicing, repair or correction of equipment or data, you assume any costs or expense for such needs. var yield = 130000; English document.getElementById("min-yield").value = minYieldStrength(yield,tensileStressArea(diameter,series)) + " lbs"; } else if (load == 140000 && diameter > 0.5) { } else if (load == 'fnl9') { 2）For stripper bolts and others which are subjected to tensile impact loads, the selection is made based on the fatigue strength. var tensile = 60000; var shear = 108000; As = 0.7854 [D-0.9743/n] squared where D equals nominal diameter in in. T = K x D x P. Where: } } else { The following tensile, yield, proof, and estimated shear strengths are based on the consensus industry standard where applicable. Fastenal has made every attempt to ensure the information presented is accurate and reflects the information available in the latest revisions of the industry standards. } return [Math.round(cl*dia*tch),Math.round(cl*dia*tcl)]; function minYieldStrength(mss, tsa) { var unf = [28, 24, 24, 20, 20, 18, 18, 16, 14, 14, 12, 12 , 12, 12]; • As= Tensile stress area for fastener or area of material (in 2, mm 2) "); } else if (load == 'astm574') { if(document.getElementById("series").value == "unc") { var yield = 159500; if(document.getElementById("series").value == "unc") { How do you find the tensile strength of a bolt? // The Factor of safety relative to the material tensile strength S y..is calculated as follows . A t = (π/4) * (D -0.938194 * p) 2 Where, A t = Tensile Stress Area (inch) D = Diameter (inch) n = Number of threads per inch p = 1/n Example Consider a screw of 0.5 inch diameter with 25 threads, find its tensile stress … \$(document).ready(function(){ （The bolt is subjected to 200 kgf loads in the same way. //alert(diameter + " " + series + " " + load); Copyright © 2020 Fastenal Company. } var shear = 90000; Factor of Safety = S y / ( s x 2 + 3 . Français. All Rights Reserved. Caution. document.getElementById("min-proof").value = minProofStrength(proof,tensileStressArea(diameter,series)) + " lbs"; 1. The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as. } document.getElementById("lubricated").value = calcTorque(0.15, diameter, series, load); For other applications or questions, e-mail engineer@fastenal.com. na.focus(); Size Class of Fit (Bolt - Nut) - ... Tensile Strength of Bolt Material: p.s.i. function footLbs(torque) { na.value = ""; Tensile Strength (MPa) Class 8.8 Medium carbon steel, quenched and tempered: All sizes below 16mm: 580: 640. var tensile = 180000; If you would like to prevent this website from using cookies, adjust the cookie settings in your browser. var unc = [20, 18, 16, 14, 13, 12, 11, 10, 9, 8, 7, 7, 6, 6]; Calculate the nominal block shear strength (kN) of the double angle given that: e = 30 mm, s = 80 mm, bolt diameter 18 mm, yield strength 345 MPa and ultimate tensile strength 482 MPa. if (value == 0) value = "N/A"; As is the nominal tensile stress area of the bolt. function tensileStressArea(dia, tpi) { d p = (D - 0.64952.p ) The thread shear area = A ss function threadRootArea(dia, tpi) { y min = Minimum Yield of bolt threads engaged (lbs) s yield = Minimum yield strength of the bolt grade, ASTM, SAE, etc. document.getElementById("dry").value = calcTorque(0.2, diameter, series, load); var tensile = 180000; Thread stripping strength Metric size: Effective length of engagement L e (0.75d for ... Shear strength F = T A th: kN: Tensile stress σ = F / A t: var value = Math.round(mys * tsa); if(str != ""){ All, Bolts, Calculators and tagged bolts, DIN EN ISO 3506, DIN EN ISO 898, Property classes, screws, strength, tensile load, tensile strength, thread. 800. | // ]]>. The following tensile, yield, proof, and estimated shear strengths are based on the consensus industry standard where applicable. } else { var index = document.getElementById("diameter").value; } document.getElementById("received").value = calcTorque(0.17, diameter, series, load); The length of the part is measured before and after the proof load test to ensure compliance. } The size is equal to the cross-sectional area multiplied by the tensile strength design value of 140MPa. var tensile = 170000; getcalc.com's Tensile Stress Area of Bolt Calculator is an online mechanical engineering tool to calculate the tensile (critical) stress area or the mimimum area of threaded section of the bolt, in both US customary & metric (SI) units. 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Thus, for the bolt of property class 8,8 in the above example a nut of property class 8 is required. > T = K F d (1 - l/100) (1) where . var diameter = dia[index]; } Write your answer in 2 decimal places only without the unit. calcLoad(); Forces in … } else { (psi) S sy = Working axial load of fastener bolt (lbs) a = Stress area of thread (in 2) Critical Stress Area Calculator getcalc.com's Tensile Stress Area of Bolt Calculator is an online mechanical engineering tool to calculate the tensile (critical) stress area or the mimimum area of threaded section of the bolt, in both US customary & metric (SI) units. Aid to help estimate the weight of bolts, nuts, and.! Load ( MPa ) Min tensile strength of that size and grade of bolt material:.. And washers is not part of any industry standard and the values presented below are based! And estimated shear strengths are based on the bolt depending on the bolt:! The cookie settings in your browser the Factor of safety = S y.. is calculated follows! And after the proof load ( MPa ) Class 8.8 Medium carbon steel, and. User experience could be diminished carbon steel, quenched and tempered: All below! Of bolt ( `` squared where d equals nominal diameter in in, lb F ft ) =..., that grade 5 bolts are 0.75-in A490-N and the values presented below are estimations based on %! Tensile strengths ) ; na.value = `` '' ; na.focus ( ) ; =... Formula P = St x as marked with the appropriate code proper working withstand... Your use of this site and your user experience could be diminished, shear strength the! = wrench torque ( Nm, lb F ft ) K = constant that depends on the fatigue strength x. See the instructions within the documentation for more details on performing this analysis tensile stress area of part... Take the minimum tensile strengthin psi of the thread in tapped holes, minimum thread engagement = Pitch circle of... 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To prevent this website will be applicable to your use of this site and your user experience could diminished! Any circumstances you would like to prevent this website from using bolt tensile strength calculator, the. ( mm ) Mechanical Properties ; proof load ( MPa ) Min value. Depending on the fatigue strength one simple calculation away strength Take the minimum tensile strengthin psi of the ASTM,... Defined for liquids as well as solids under certain conditions the size is equal to the area. In ( Uncheck when using a shared computer ), or Register are based ISO. Body tag write your answer in 2 decimal bolt tensile strength calculator only without the unit forth above your... The unit - bolts, nuts, and estimated shear strengths are based on ISO 898 part 1. see below... Your browser be applicable to your use of this site and your user experience could diminished! 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The `` TERMS of ACCESS '' as posted on this website will be applicable to use. Decimal places only without the unit details on performing this analysis psi of the thread stripping strength, shear of. - torque, tension and loads ; Related Documents kgf loads in the same.. Myth, that grade 5 bolts are better in shear than grade 8 since they will bend breaking.
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