英制螺栓機(jī)械性能要求
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. 英制(SAE J429)螺栓所用材料: Grade 1 2 4 5 5.1 5.2 7 8 8.1 8.2 Material and Treatment Low or medium carbon steel Medium Carbon cold drawn steel Medium Carbon steel quenched and tempered Low or medium carbon steel Medium Carbon alloy steel quenched and tempered SAE 1541 Low or medium carbon steel Element% C Min -- --- --- 0.28 0.15 0.15 0.28 0.28 0.28 0.15 Max 0.55 0.55 0.55 0.55 0.30 0.25 0.55 0.55 0.55 0.25 Mn Min --- --- --- --- --- 0.74 --- --- --- 0.74 P Max 0.048 0.048 0.048 0.048 0.048 0.048 0.040 0.040 0.048 0.048 S Max 0.058 0.058 0.13 0.058 0.058 0.058 0.045 0.045 0.058 0.058 B Min --- --- --- --- --- 0.0005 ---- --- --- 0.0005 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 In Full Size Bolts, Screws,Studs,Sems 機(jī)械性能Machine Test Specimen Of Bolts,Screws,and Studs Surface Hardness Core Hardness Proof Load Tensile Strength Yield Strength Tensile Strength Elongation伸長(zhǎng)率 Reduction Of Area斷面收縮 Rockwell 30N Max Rockwell Min Max 1 Bolts螺栓 Screws螺釘 Studs螺柱 1/4 thru 1-1/4 33000 60000 36000 60000 18 35 --- B70 B100 2 Bolts螺栓 Screws螺釘 Studs螺柱 1/4 thru 3/4 55000 74000 57000 74000 18 35 --- B80 B100 Over 3/4 thru 1-1/2 33000 60000 36000 60000 18 35 --- B70 B100 4 Studs螺柱 1/4 thru 1-1/2 65000 115000 100000 115000 10 35 --- C22 C32 5 Bolts螺栓 Screws螺釘 Studs螺柱 1/4 thru 1 85000 120000 92000 120000 14 35 54 C25 C34 Over 1 thru 1-1/2 74000 105000 81000 10500 14 35 50 C19 C30 5.1d此螺絲有墊片 Bolts螺栓 Screws螺釘 Studs螺柱 No.6 thru 5/8 85000 120000 --- --- --- --- 59.5 C25 C40 No.6 thru 1/2 / / / / / / / / / 5.2 Bolts螺栓 Screws螺釘 1/4 thru 1 85000 120000 92000 120000 14 35 56 C26 C36 7e此螺絲熱處理后輾牙 Bolts螺栓 Screws螺釘 1/4 thru 1-1/2 105000 13300 115000 133000 12 35 54 C28 C34 8 Bolts螺栓Screws螺釘 Studs螺柱 1/4 thru 1-1/2 120000 150000 130000 15000 12 35 58.6 C33 C39 8.1 Studs螺柱 1/4 thru 1-1/2 120000 150000 130000 150000 10 35 --- C32 C38 8.2 Bolts螺栓 Screws螺釘 1/4 thru 1 120000 150000 130000 150000 10 35 58.6 C33 C39 Chemical化學(xué)成份 Carbon:碳 Manganese min錳 Phosphorus max磷 Sulfur ,max硫 Boron ,min硼 Type1 Heat analysis Product analysis 0.28-0.55 0.25-0.58 0.60 0.57 0.040 0.048 0.050 0.058 --- --- Type2 Heat analysis Product analysis 0.15-0.38 0.13-0.41 0.70 0.67 0.040 0.048 0.050 0.058 0.0005 0.0005 強(qiáng)度等級(jí) Grade Designation 產(chǎn)品Products 規(guī)格 Nominal Size Dia. In Full Size Bolts, Screws,Studs, Surface Hardness Hardness硬度 Proof Load Tensile Strength Yield Strength Elongation in 4D min % Reduction of Area ,min % Rockwell 30N Max Brinell HB布氏 Rockwell HRC洛氏 TYPE2 Bolts螺栓 Studs螺柱 1/4 thru 1 85ksi 120ksi 92ksi 14 35 / 255to321 25to34 TYPE1 over 1 thru 1-1/2 over 1-1/2 thru3 74ksi 55ksi 105ksi 90ksi 81ksi 58ksi 14 14 35 35 / 223to285 183t235 19to30 --- 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 over-tapping required for zinc coated nuts in Specification ASTM A563 1/4至1-1/2英寸普通產(chǎn)品配合的螺帽為ASTM A563的B普通螺帽(hex);1-1/2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 A Heat analysis Product analysis max0.29 max0.33 max 0.90 max 0.93 max 0.04 max 0.041 max 0.15 --- ① --- GradeB Heat analysis Product analysis max0.29 max0.33 max 0.90 max 0.93 max 0.04 max 0.041 max 0.05 max 0.051 --- 備注: 1lbf=4.448N 1 ksi=6.9Mpa 1lbf=0.4593kgf 強(qiáng)度等級(jí) Grade Designation 產(chǎn)品Products 規(guī)格Nominal Size Dia In Full Size Bolts, Screws,Studs, Surface Hardness Hardness硬度 Proof Load Tensile Strength Yield Strength Elongation in 2 in min % Reduction of Area min % Rockwell 30N Max Brinell HB Rockwell HRB Grade A Bolts螺栓 Studs螺柱 Less than 3xdia 3xdia and longer / Min 60ksi --- 18 / / 121-241 max241 69-100 max100 Grade B Less than 3xdia 3xdia and longer / 60-100ksi --- 18 / / 121-212 max212 69-95 max95 Grade C All / 58-80ksi 36(50)ksi 23 / / No hardness required ①Resulfurized 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1-1/2英寸普通產(chǎn)品配合的螺帽為ASTM A563的A 普通螺帽(hex);1-1/2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 1-1/2 in Heat analysis Product analysis 0.30-0.53 0.28-0.55 / max 0.035 max 0.040 max 0.040 max0.045 / For size Large than1-1/2 in Heat analysis Product analysis 0.35-0.53 0.33-0.55 / max 0.035 max 0.040 max 0.040 max0.045 / 強(qiáng)度等級(jí) Grade Designation 產(chǎn)品Products 規(guī)格Nominal Size Dia In Full Size Bolts, Screws,Studs, Surface Hardness Hardness硬度 Proof Load Tensile Strength Yield Strength Elongation in 2 in min % Reduction of Area min % Rockwell 30N Max Brinell HB Rockwell HRC Grade BC Bolts螺栓 Studs螺柱 1/4 to 2-1/2 Over 2-1/2 105ksi 95ksi 125ksi 115ksi 109ksi 99ksi 16 16 50 45 / 255-331 235-311 26-36 22-33 Grade BD 1/4 to 2-1/2 Over 2-1/2 120ksi 105ksi 150ksi 140ksii 130ksi 115ksi 14 14 40 40 / 311-363 293-363 33-39 31-39 These values are the as the over-tapping 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。 英制螺栓(ASTM A193)的機(jī)械性質(zhì): Grade and Class Diameter in. Tensile Strength ksi Yield Strength 0.2% Offset Elongation in 4D min % Reduction of Area min % Hardness硬度 Max Refer To note Min Min Min Min Brinell Rockwell B5 To 1/4 incl. 100 80 16 50 -- -- 1 B6 To 1/4 incl. 110 85 15 50 -- -- 1 B6X To 1/4 incl. 90 70 16 50 -- C26 1 B7 To 2-1/2 incl. 125 105 16 50 --- C35 1 Over2-1/2 to 4 115 95 16 50 -- C35 Over 4 to 7 100 75 18 50 -- C35 B16 To 2-1/2 incl. 125 105 18 50 321 C35 1 Over2-1/2 to 2 110 95 17 45 321 C35 Over 4 to 7 100 85 16 45 321 C35 B7M To 4 incl. 100 80 18 50 235 B99 1,2 Over 4 to 7 100 75 18 50 235 B99 Classes 1 and 1D: B8,B8M,B8P,B8LN,B8MLN all 75 30 30 50 223 B96 3,4 Class1: B8C,B8T all 75 30 30 50 223 B96 4 Class 1A:B8A,B8CA,B8MA,B8PA,B8TA,B8LNA ,B8MLNA,B8NA,B8MNA,B8MLCuNA all 75 30 30 50 192 B90 3 Classes 1B and 1D: B8N,B8MN,B8MLCuN all 80 35 30 40 223 B96 3.4 Class 1C and 1D: B8R all 100 55 35 55 271 C28 3 Class 1C: B8RA all 100 55 35 55 271 C28 3 Grade and Class Diameter in. Tensile Strength ksi Yield-Strength 0.2% Offset Elongation in 4D min % Reduction of Area min % Hardness硬度 Max Refer To note Min Min Min Min Brinell Rockwell Class 1C and 1D: B8S all 95 50 35 55 271 C28 3 Class 1C: B8SA all 95 50 35 55 271 C28 3 Class 2: B8,B8C,B8P,B8T,B8N To 3/4 Over 3/4 to 1 Over 1 to 1-1/4 Over1-1/4 to1-1/2incl. 125 115 105 100 100 80 65 50 12 15 20 28 35 35 45 45 321 321 321 321 C35 C35 C35 C35 3,5 Class 2: B8M,B8MN,B8MLCuN To 3/4 Over 3/4 to 1 Over 1 to 1-1/4 Over1-1/4 to1-1/2incl. 110 100 95 90 96 80 65 50 15 20 25 30 45 45 45 45 321 321 321 321 C35 C35 C35 C35 3,5 3 Class 2B: B8,B8M2 To 2 incl. Over 2 to 2-1/2incl. Over2-1/2 to 3 incl. 95 90 80 75 65 55 25 30 30 40 40 40 321 321 321 C35 C35 C35 3,5 Class 2C: B8M3 To 2 incl. Over 2 85 85 65 60 30 30 60 60 321 321 C35 C35 3,5 NOTES: 1. The minimum temperature for Grades B5, B6X,and B7 shall be 1100F; for Grade B16, 1200F; 譯文:等級(jí)為B5,B6X和B7的最小回火溫度為1100F,而等級(jí)為B16的最小回火溫度為1200F 2. To meet the tensile strength requirements, the hardness shall be over Brinell 201(Rockwell B94)minimum. 譯文:硬度一定要在201布氏(94HRB)硬度以上,抗拉強(qiáng)度一定能達(dá)到。 3. Class 1 is solution treated-Class 1A is solution treated in the finished condition for corrosion resistance; heat treatment is critical due to physical property requirements. Class 2 is solution treated and strain-hardened. Austenitic steels in the strain-hardened condition may not show uniform properties throughout the section particularly in sizes over 3/4 in .in diameter. 譯文:Class 1將其視為1級(jí)對(duì)待,Class 1A的材料應(yīng)進(jìn)行表面處理,具有防腐蝕性能,Class 2類的各等級(jí)的材料應(yīng)接受碳化物固溶處理后應(yīng)變硬化奧氏體鋼,尤為3/4以上的螺栓,經(jīng)硬化后可能出現(xiàn)整個(gè)面上各部分性能不均勻現(xiàn)象. 4. For diameters 3/4 in. and smaller, a maximum hardness of Brinell 241(Rockwell B 100) is permitted. 譯文:直徑為3/4或更小的產(chǎn)品,硬度要求為最大241布氏(100HRB)硬度。 5. For diameters 1-1/2 in. and larger, center(core) properties may be lower than indicated by test reports which are based on values determined at mid-radius. 譯文:直徑為1-1/2或更大產(chǎn)品,芯部性能低于試驗(yàn)報(bào)告所點(diǎn)明的性能,因?yàn)樵囼?yàn)報(bào)告依據(jù)的數(shù)值是在半徑中點(diǎn)處測(cè)定的。 Table 3 Grade Identification Markings for Popular Grades of Carbon Steel Nuts Grade Identification Marking Specification規(guī) Material材料 Nominal Size in. Proof Load Stress ksi載荷 Hardness Rockwell硬度 See Note參見筆記 Min Max NO MARK ASTM A563-Grade O Carbon Steel 1/4 thru 1-1/2 69 B55 C32 3,4 ASTM A563-Grade A Carbon Steel 1/4 thru 1-1/2 90 B68 C32 3,4 ASTM A563-Grade B Carbon Steel 1/4 thru 1 120 B69 C32 3,4 Over 1 thru 1-1/2 105 SAE J995-Grade 2 Carbon Steel 1/4 thru 1-1/2 90 - C32 11 ASTM A563-Grade C Carbon Steel may be Quenched and Tempered 1/4 thru 4 144 B78 C38 5 ASTM A563-Grade C3 Atmospheric corrosion Resistant Steel, may be Quenched and Tempered 1/4 thru 4 144 B78 C38 5,9 ASTM A563-Grade D Carbon Steel may be Quenched and Tempered 1/4 thru 4 150 B84 C38 6 SAE J995-Grade 5 Carbon Steel 1/4 thru 1 120 - C32 12 ASTM A563-Grade DH Carbon Steel, Quenched and Tempered 1/4 thru 4 175 C24 C38 6 ASTM A563-Grade DH3 Atmospheric corrosion Resistant Steel, Quenched and Tempered 1/4 thru 4 175 C24 C38 5,9 ASTM A194-Grade 1 Carbon Steel 1/4 thru 4 130 B70 - 2,7 ASTM A194-Grade 2 Medium Carbon Steel 1/4 thru 4 150 159 352 2,7,8 ASTM A194-Grade 2H Medium Carbon Steel, Quenched and Tempered 1/4 thru 4 175 C24 C35 2,7 Table 3 Continued next page Table 3 Grade Identification Markings for Popular Grades of Carbon Steel Nuts (Continued) Grade Identification Marking Specification Material Nominal Size in. Proof Load Stress ksi保載 Hardness Rockwell硬度 See Note Min Max ASTM A194-Grade 2HM Medium Carbon Steel, Quenched and Tempered 1/4 thru 4 150 159 237 2,7,8 SAE J995-Grade 8 Medium Carbon Steel, Quenched and Tempered 1/4 thru 5/8 150 C24 C30 12 over 5/8 thru 1 150 C26 C34 >1" 150 C26 C36 ASTM A194-Grade 4 Medium Carbon Alloy Steel, Quenched and Tempered 1/4 thru 4 175 C24 C38 2,7 ASTM A194-Grade 7 Medium Carbon Alloy Steel, Quenched and Tempered 1/4 thru 4 175 C24 C38 2,7 ASTM A194-Grade 7M Medium Carbon Alloy Steel, Quenched and Tempered 1/4 thru 4 150 159 237 2,7,8 See Notes 1,2 10 NOTES:(備注) 1. In addition to the indicated grade marking, all grades, except A563 grade O, A and B, must be marked for manufacturer identification. 除所列等級(jí)標(biāo)記外,所有等級(jí)(除A563,O、A、B級(jí)外),必需注明廠家自己標(biāo)記。 2. The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts are machined from bar stock, the nut must be additionally marked with the letter‘B’.The letters H and M indicate heat the ated nuts. A194標(biāo)準(zhǔn),所有螺帽都是冷墩成型和熱處鍛造成型螺帽。當(dāng)螺帽是由棒鋼機(jī)械加工而成時(shí),需在標(biāo)記上加字母“B”;字母“H”和“T”表示是經(jīng)熱處理的螺帽。 3. Nuts are not required to be marked unless specified by the purchaser. When marked, the identification marking shall be the grade letter O, A or B. 如購(gòu)貨方無特殊要求,螺帽上可以不注明等級(jí)標(biāo)記。如果要注明的話,等級(jí)標(biāo)記為字母O、A或B。 4. Properties shown are those of non plated or non coated coarse thread hex nuts. For properties of other nut styles, nuts with fine threads, and plated or coated nuts, refer to Table 3, page B-171. 所示機(jī)械性能,是非電鍍、粗牙、六角螺帽的機(jī)械性能。細(xì)牙、電鍍螺帽的機(jī)械性能,參閱B171頁(yè),表3。 5. Properties shown are those of coarse thread heavy hex nuts. 所示機(jī)械性能是粗牙、重型六角螺帽的機(jī)械性能。 6. Properties shown are those of coarse thread heavy hex nuts. For properties of other nut styles and nuts with fine threads, refer to Table 3, page B-112. 所示機(jī)械性能是粗牙、重型六角螺帽的機(jī)械性能。細(xì)牙螺帽和其它類別螺帽的機(jī)械性能參閱B-112頁(yè),表3。 7. Properties shown are those of coarse and 8-pitch thread heavy hex nuts. For properties of coarse and 8-pitch hex nuts, refer to Table 3, page B-132. 所示機(jī)械性能是粗牙,牙數(shù)為8的重型六角螺帽的機(jī)械性能。粗牙,牙數(shù)為8的普通六角螺帽的機(jī)械性能參閱B132頁(yè),表3。 8. Hard-nesses are Brinell Hardness Numbers. 硬度是布氏硬度。 9. The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel. 如采用防腐蝕鋼材,螺帽生產(chǎn)廠家可增加其它標(biāo)記。 10. Specifications(詳細(xì)說明)— ASTM A563-Carbon and Alloy Steel Nuts, page B-167. ASTM書A563-碳鋼、合金鋼螺帽,B-167頁(yè)。 ASTM A194/A194M-Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature Service, page B-126. ASTM A194/A194M –經(jīng)高壓、高溫處理的,與螺栓配套的碳鋼,合金鋼螺帽。 11. Grade 2 不需打任何標(biāo)記。 12. Grade 5 and 8應(yīng)標(biāo)記等級(jí)。 HV表示維氏硬度,是硬度的一種測(cè)量方法及單位; KSI是千磅/平方英寸,是壓強(qiáng),具體地說是抗拉強(qiáng)度單位; 抗拉強(qiáng)度和硬度之間非線性關(guān)系,一般可以查表?yè)Q算: 104KSI=HV220;HV250=116KSI 1 KSI = 1000 lb / in.2 = 1000 x 0.4536 x 9.8 N / (25.4 mm)2 = 6.89 N / mm2 Table 2 Grade Identification Markings for Popular Grades of Carbon Steel Externally Threaded Fasteners Grade Identification Marking Specification Material Nominal Size in. Proof Load Stress ksi Tensile Strength Min ksi Hardness Rockwell See Note Min Max SAE J429-Grade 1 Low or Medium Carbon Steel 1/4 thru 1-1/2 33 60 B70 B100 SAE J429-Grade 2 1/4 thru 3/4 over 3/4 thru 1-1/2 55 33 74 60 B80 B70 B100 B100 307A ASTM A307-Grade A 1/4 thru 4 - 60 B69 B100 307B ASTM A307-Grade B 1/4 thru 4 - - 60min 100max B69 B95 No Mark SAE J429-Grade 4 Medium Carbon Steel, Quenched and Tempered 1/4 thru 1-1/2 65 115 - - 僅指studs SAE J429-Grade 5 ASTM A449-Type1 Medium Carbon Steel, Quenched and Tempered 1/4 thru 1 over 1 thru 1-1/2 85 74 120 105 C25 C19 C34 C30 ASTM A449-Type1 over 1-1/2 thru 3 55 90 183 235 3 SAE J429-Grade 5.1 Low or Medium Carbon Steel, Quenched and Tempered No.6 thru 1/2 85 120 C25 C40 4 SAE J429-Grade 5.2 Low Carbon Martensite Steel, Quenched and Tempered 1/4 thru 1 85 120 C26 C36 ASTM A449-Type 2 C25 C34 A325 ASTM A325-Type1 Medium Carbon Steel, Quenched and Tempered 1/2 thru 1 over 1 to 1-1/2 85 74 120 105 C24 C19 C35 C31 5 A32555 ASTM A325-Type3 Atmospheric corrosion Resistant Steel, Quenched and Tempered 6 Table 2 Continued next page Table 2 Grade Identification Markings for Popular Grades of Carbon Steel Externally Threaded Fasteners(Continued) Grade Identification Marking Specification Material Nominal Size in. Proof Load Stress ksi Tensile Strength Min ksi Hardness Rockwell See Note Min Max ASTM A354-Grade BC Medium Carbon Alloy Steel, Quenched and Tempered 1/4 thru 2-1/2 105 125 C26 C36 SAE J429-Grade 7 Medium Carbon Alloy Steel, Quenched and Tempered 1/4 thru 1-1/2 105 133 - - 熱處理后再輾牙 SAE J429-Grade 8 Medium Carbon Alloy Steel, Quenched and Tempered 1/4 thru 1-1/2 120 150 C33 C39 BD ASTM A354-Grade BD 1/4 thru 2-1/2 120 150 C33 C39 7 No Mark SAE J429-Grade 8.1 Medium Carbon Alloy or SAE 1541/1541H 1/4 thru 1-1/2 120 150 - - 僅指studs SAE J429-Grade 8.2 Low Carbon martensite Steel, Quenched and Tempered 1/4 thru 1 120 150 C33 C39 A490 ASTM A490-Type 1 Medium Carbon Alloy Steel, Quenched and Tempered 1/2 thru 1-1/2 120 150 min 170max C33 C38 A490 ASTM A490-Type 2 Low Carbon Marten-site Steel, Quenched and Tempered 1/2 thru 1 120 150 min 170max C33 C38 A490090 ASTM A490-Type 3 Atmospheric Corrosion Resistant Steel, Quenched and Tempered 1/2 thru 1-1/2 120 150 min 170max C33 C38 6 NOTES:(備注) 1.In addition to the indicated grade marking, all grades included in this table must be marked for manufacturer identification. 除所列等級(jí)標(biāo)記外,此表中所有等級(jí)必需標(biāo)注廠家自己的標(biāo)記。 2.While hex heads are shown, grade markings apply equally to products with other head configurations. 如果是六角頭型,等級(jí)標(biāo)記等同與其它頭型。 3.Hardnesses are Brinell Hardness Numbers. 硬度為布氏硬度。 4.Grade 5.1 is a popular grade for SEMS. SEMS產(chǎn)品常用等級(jí)是5.1級(jí),參閱J-10頁(yè)。 5.A325 Type 1 bolts may also be marked with 3 radial lines 120apart in addition to A325 marking. A325 1類產(chǎn)品,等級(jí)標(biāo)記為 + A325 。 6.The bolt manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel. 如采用防腐蝕鋼材,廠家可增加其它標(biāo)記來表明使用的是耐腐蝕鋼材。 7.ASTM A354 Grade BD may have optionally six radial lines. ASTM A354 BD級(jí)可采用六條線標(biāo)記。 8.Specifications—(詳細(xì)說明:) SAE J429 — Mechanical and Material Requirements for Externally Threaded Fasteners, page B-79. SAE J429—外螺紋緊固件 機(jī)械性能與材質(zhì)要求,B-79頁(yè)。 ASTM A307— Carbon Steel Externally Threaded Standard Fasteners, page B-90. ASTM A307—碳鋼外螺紋緊固件,B-90頁(yè)。 ASTM A449— Quenched and Tempered Steel Bolts and Studs, page B-97. ASTM A449—淬火、回火(碳鋼)螺栓、螺柱,B-97頁(yè)。 ASTM A325— High Strength Bolts for Structural Steel Joints, page E-28. ASTM A325—高強(qiáng)度螺栓,E-28頁(yè)。 ASTM A354— Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners, page B-139. ASTM A354—淬火、回火合金鋼螺栓,螺柱及其它外螺紋緊固件,B-139頁(yè)。 ASTM A490— Heat Treated Steel Structural Bolts, 150 ksi Minimum Tensile Strength, page E-37. ASTM A490—熱處理鋼結(jié)構(gòu)螺栓,抗拉強(qiáng)度最小150 ksi,E-37頁(yè)。 附表一:Reference to Fastener ldentification Markings Specification No. Material See Clause No. On Page No Bolts, Screws and studs SAE J429 ASTM A307 ASTM A449 Carbon steel Carbon alloy steel Carbon steel Carbon steel 6 13 15 B-79 B-90 B-97 ASTM A354 ASTM A193/A193M ASTM A320/A320M Carbon alloy steel Carbon alloy steel stainless steel Carbon alloy steel stainless steel 15 and S1 16 and S5 11 B-139 B-114 B-104 ASTM F593 ASTM F468 ASTM A325 stainless steel nonferrous alloys carbon steel 18 17 16 B-148 B-158 E-28 ASTM A490 ASTM A394 ASTM F901 Carbon alloy steel Carbon steel aluminum 18 16 17.1 and S2.1 E-37 E-44 E-51 Nuts ASTM A563 ASTM A194/A194M Carbon steel Carbon steel Carbon alloy steel stainless steel 14 14 B-167 B-126 ASTM F594 ASTM F467 stainless steel nonferrous alloys 18.1 17.1 B-177 B-184 Washers ASTM F436 ASTM F959 Carbon steel Carbon steel 15 17 L-24 E-65 螺帽機(jī)械性質(zhì): 普通螺帽采用的標(biāo)準(zhǔn): GB/T 3098.2/4、ISO 898.2/ 6、JIS B1052、SAE J995、DIN 267.4 、ASTM A563、ASTM A194、 普通螺帽的機(jī)械性質(zhì): 螺紋組合件在實(shí)際使用過程中由于超擰,可能產(chǎn)生下列失效形式: 1. 螺桿斷裂; 2. 螺桿的螺紋脫扣; 3. 螺母的螺紋脫扣; 4. 螺母和螺桿的螺紋脫扣; 螺桿的斷裂是突然發(fā)生的,比較容易發(fā)現(xiàn),而脫扣是逐漸發(fā)生的,很難發(fā)現(xiàn)并增加了因緊固件失效而造成事故的危險(xiǎn)性。 對(duì)螺紋連接件的失效的設(shè)計(jì),總希望失效是發(fā)生在螺桿部分,因此其螺紋配套的設(shè)計(jì)為強(qiáng)度等級(jí)較高的螺母可以替代性能等級(jí)較低的螺母;螺栓螺母組合件的應(yīng)力高于螺栓的屈服強(qiáng)度或保證應(yīng)力是可行的; 對(duì)于實(shí)際生產(chǎn)中超過螺栓保證載荷的擰緊時(shí)有發(fā)生的情況,對(duì)螺母的設(shè)計(jì)應(yīng)至少保證在超擰10%時(shí),螺紋組合件的失效是螺桿斷裂; 螺帽用材料: GB3098/JIS B1052 性能等級(jí) 化學(xué)成份% C max Mn min P max S max 4、5、6 / 0.50 ―/― 0.060/0.110 0.150 8、9 04 0.58 0.25 0.060 0.150 10 05 0.58 0.30 0.048 0.150/0.058 12 / 0.58 0.45 0.048 0.150/0.058 1)、性能等級(jí)為05、8(>M16的I型螺母)、10和12級(jí)螺母應(yīng)進(jìn)行淬火并回火處理。 2)、對(duì)于4、5、6和04、05級(jí)的螺母可以用易切鋼制造(供需雙方另有協(xié)議除外),其硫。磷和鉛的最大含量為:硫0.30%(0.34%);磷0.11%;鉛0.35%; 3)、對(duì)于10、12為改善螺母的機(jī)械性能,必要時(shí)可以增添合金元素 螺紋規(guī)格 性能等級(jí) 04 05 4 保證應(yīng)力SP 維氏硬度HV 螺母 保證應(yīng)力SP 維氏硬度HV 螺母 保證應(yīng)力SP 維氏硬度HV 螺母 > ≤ min max 熱處理 型式 min max 熱處理 型式 min max 熱處理 型式 -- M4 380 188 302 不淬火回火 薄型 500 272 353 淬火并 回火 薄型 -- -- -- -- -- M4 M7 M7 M10 M10 M16 M16 M39 510 117 302 不淬火回火 1 螺紋規(guī)格 性能等級(jí) 5 6 8 保證應(yīng)力SP 維氏硬度HV 螺母 保證應(yīng)力SP 維氏硬度HV 螺母 保證應(yīng)力SP 維氏硬度HV 螺母 > ≤ min max 熱處理 型式 min max 熱處理 型式 min max 熱處理 型式 -- M4 520 130 302 不淬火回火 1 600 150 302 不淬火回火 1 800 180/170 302 不淬火回火 1 M4 M7 580 670 855/810 200/ 188 M7 M10 590 680 8- 1.請(qǐng)仔細(xì)閱讀文檔,確保文檔完整性,對(duì)于不預(yù)覽、不比對(duì)內(nèi)容而直接下載帶來的問題本站不予受理。
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