【正文】 n steelMedium Carbon alloy steel quenched and temperedSAE1541Low or medium carbon steelElement%CMinMaxMn MinP MaxS MaxB Min英制螺栓（SAE J429）的機(jī)械性質(zhì)：強(qiáng)度等級(jí)Grade Designation產(chǎn)品Products規(guī)格Nominal Size Dia InFull Size Bolts，Screws，Studs，Sems機(jī)械性能Machine Test Specimen OfBolts，Screws，and StudsSurfaceHardnessCoreHardnessProofLoadTensileStrengthYieldStrengthTensileStrengthElongation伸長(zhǎng)率Reduction Of Area斷面收縮Rockwell30N MaxRockwellMinMax1Bolts螺栓Screws螺釘Studs螺柱1/4 thru 11/4330006000036000600001835B70B1002Bolts螺栓Screws螺釘Studs螺柱1/4 thru 3/4550007400057000740001835B80B100Over 3/4 thru 11/2330006000036000600001835B70B1004Studs螺柱1/4 thru 11/2650001150001000001150001035C22C325Bolts螺栓Screws螺釘Studs螺柱1/4 thru 18500012000092000120000143554C25C34Over 1 thru 11/2740001050008100010500143550C19C30Bolts螺栓Screws螺釘Studs螺柱 thru 5/885000120000C25C40 thru 1/2/////////Bolts螺栓Screws螺釘1/4 thru 18500012000092000120000143556C26C367e此螺絲熱處理后輾牙Bolts螺栓Screws螺釘1/4 thru 11/210500013300115000133000123554C28C348Bolts螺栓Screws螺釘Studs螺柱1/4 thru 11/2120000150000130000150001235C33C39Studs螺柱1/4 thru 11/21200001500001300001500001035C32C38Bolts螺栓Screws螺釘1/4 thru 11200001500001300001500001035C33C39Chemical化學(xué)成份Carbon:碳Manganese min錳Phosphorus max磷Sulfur ,max硫Boron ,min硼Type1Heat analysisProduct analysisType2Heat analysisProduct analysis強(qiáng)度等級(jí)Grade Designation產(chǎn)品Products規(guī)格Nominal Size Dia. InFull Size Bolts，Screws，Studs，Surface HardnessHardness硬度ProofLoadTensileStrengthYieldStrengthElongation in 4D min %Reduction of Area ,min %Rockwell30N MaxBrinellHB布氏RockwellHRC洛氏TYPE2Bolts螺栓Studs螺柱1/4 thru 185ksi120ksi92ksi1435/255to32125to34TYPE1over 1 thru 11/2over 11/2 thru374ksi55ksi105ksi90ksi81ksi58ksi14143535/223to285183t23519to30英制螺栓（ASTM A449）的化學(xué)成份和機(jī)械性質(zhì)：配合的螺帽為ASTM A563中的產(chǎn)品：These values are the as the overtapping required for zinc coated nuts in Specification ASTM A5631/4至11/2英寸普通產(chǎn)品配合的螺帽為ASTM A563的B普通螺帽（hex）；11/2至3英寸普通產(chǎn)品配合的螺帽為ASTM A563的A重型螺帽（heavy hex）；1/4至3英寸鍍鋅產(chǎn)品配合的螺帽為ASTM A563的DH重型螺帽（heavy hex）英制螺栓（ASTM A307）的化學(xué)成份和機(jī)械性質(zhì)：Chemical化學(xué)成份Carbon:碳Manganese min錳Phosphorus max磷Sulfur max硫Boron min硼Grade AHeat analysisProduct analysismax max max max max ①GradeBHeat analysisProduct analysismax max max max max max 備注: 1lbf= 1 ksi= 1lbf=強(qiáng)度等級(jí)Grade Designation產(chǎn)品Products規(guī)格NominalSize Dia InFull Size Bolts，Screws，Studs，Surface HardnessHardness硬度ProofLoadTensileStrengthYieldStrengthElongation in2 in min %Reduction of Area min %Rockwell30N MaxBrinellHBRockwellHRBGrade ABolts螺栓Studs螺柱Less than 3xdia3xdia and longer/Min60ksi18//121241max24169100max100Grade BLess than 3xdia3xdia and longer/60100ksi18//121212max2126995 max95Grade CAll/5880ksi36（50）ksi23//No hardness required①Resulfurized steel is not subject to rejection based on product analysis for sulfur配合的螺帽為ASTM A563中的產(chǎn)品： 1/4至11/2英寸普通產(chǎn)品配合的螺帽為ASTM A563的A 普通螺帽（hex）；11/2至4英寸普通產(chǎn)品配合的螺帽為ASTM A563的A重型螺帽（heavy hex）；1/4至4英寸鍍鋅產(chǎn)品配合的螺帽為ASTM A563的A重型螺帽（heavy hex）英制螺栓（ASTM A354）的化學(xué)成份和機(jī)械性質(zhì)：Chemical化學(xué)成份Carbon:碳Manganese min錳Phosphorus max磷Sulfur max硫Boron min硼For size through 11/2 inHeat analysisProduct analysis/max max max /For size Large than11/2 inHeat analysisProduct analysis/max max max /強(qiáng)度等級(jí)Grade Designation產(chǎn)品Products規(guī)格NominalSize Dia InFull Size Bolts，Screws，Studs，Surface HardnessHardness硬度ProofLoadTensileStrengthYieldStrengthElongation in2 in min %Reduction of Area min %Rockwell30N MaxBrinellHBRockwellHRCGrade BCBolts螺栓Studs螺柱1/4 to 21/2Over 21/2105ksi95ksi125ksi115ksi109ksi99ksi16165045/25533123531126362233Grade BD1/4 to 21/2Over 21/2120ksi105ksi150ksi140ksii130ksi115ksi14144040/31136329336333393139These values are the as the overtapping required for zinc coated nuts in Specification ASTM A563譯文：這些值為鍍鋅產(chǎn)品的要求，在ASTM A563中對(duì)螺帽有具體要求。F。3. Class 1 is solution treatedClass 1A is solution treated in the finished condition for corrosion resistance。c）斷后伸長(zhǎng)率δ5 δ5=（LUL0）/L0100%d）斷面收縮率g：g=（S0SU）/S0100%如果由于螺栓長(zhǎng)度較短而不能確定斷后伸長(zhǎng)率時(shí)，則斷面收縮率應(yīng)按L0≥3d0進(jìn)行測(cè)量。應(yīng)按螺紋的應(yīng)力截面積As計(jì)算抗拉強(qiáng)度δb，As為：As=∏（d2+d3）2/16式中：d2——螺紋中徑的基本尺寸，mm；d3——外螺紋小徑的基本尺寸（d1）減去螺紋原始三角形高度（H）的1/6值，既：d3= d1H/6 mmH螺紋原始三角形高度（H=），mm；P螺距，mm；Л圓周率，л=對(duì)螺栓、螺釘和螺柱實(shí)物進(jìn)行試驗(yàn)時(shí)，承受拉力載荷又未旋合的螺紋長(zhǎng)度應(yīng)大于等于一倍螺紋直徑（1d）；對(duì)螺柱的擰入機(jī)體端應(yīng)擰緊在專用夾具中。2． 扭矩試驗(yàn)（）該試驗(yàn)適用于螺紋公稱直徑:3mm≤d≤10mm,且由于長(zhǎng)度太短而不能實(shí)施拉力試驗(yàn)的螺釘和螺栓產(chǎn)品:最小破壞扭矩:MBmin=243。/δb（附表）強(qiáng)度比常數(shù)值性能等級(jí)比值X最小破壞扭矩螺紋規(guī)格螺距mm最小破壞扭MB min，N。驗(yàn)收時(shí)如有爭(zhēng)議，應(yīng)以維氏硬度為仲裁試驗(yàn)。否則表示已滲碳..斷定螺柱、螺栓或螺釘表面滲碳情況。對(duì)螺柱進(jìn)行試驗(yàn)時(shí)，應(yīng)將擰入機(jī)體端（或等長(zhǎng)雙頭螺柱的任一端）擰緊在專用夾具內(nèi)。受一些不確定因素如直線度和螺紋對(duì)中性（加大測(cè)量誤差）的影響，第一次施加保證載荷時(shí)，可能導(dǎo)致緊固件產(chǎn)生明顯的伸長(zhǎng)，在這種情況下，可使用比規(guī)定值增大3%的載荷進(jìn)行第二次保證載荷試驗(yàn)，如果施加這種載荷后與加載前的長(zhǎng)度相同（誤差在177。拉力試驗(yàn)應(yīng)持續(xù)到發(fā)生斷裂。0030/d≤2010060604020＜d≤3960404040 、未通過(guò)楔負(fù)載試驗(yàn)要求的產(chǎn)品，并按上表規(guī)定的楔墊再次進(jìn)行試驗(yàn)。全螺紋的螺栓或螺釘，即使在第一扣螺紋上出現(xiàn)裂縫，只要頭部未完全斷掉，仍應(yīng)視為符合本試驗(yàn)要求。英制大螺絲機(jī)械性能檢測(cè)方法請(qǐng)參見(jiàn)ASTM E18和ASTM F606小螺絲機(jī)械性質(zhì)介紹:小螺絲所采用的標(biāo)準(zhǔn)有： SAE J93 JIS B