1、STANDARD PARTS SECTION AA - MATERIAL 8 PERFORMANCE SPECIFICATIONS FOR STANDARD AND UTlLJW PARTS TABLE OF CONTENTS Categorical Listing of Material use recommended engineering specification shown on cross reference chart. (PAGE AA-111.006) * This specification is published in the Ford Motor Company En
2、gineering Material Specifications Manual. Copies of this specification may be obtained from: Ford Motor Company Engineering Materials Program Headquarters 101 Union Street Plymouth, Michigan 48170 Telephone: (313) 455-0055 Extension 2431 DECEMBER 1991 PAGE AA-111.002 STANDARD PARTS e- CATEGORICAL US
3、ING OF MATERIAL use recommended engineering specification shown on cross reference chart. (PAGE AA-111.006) This specification is published in the Ford Motor Company Engineering Material Specifications Manual. Copies of this specification may be obtained from: Ford Motor Company Engineering Material
4、s Program Headquarters 101 Union Street Plymouth, Michigan 48170 Telephone: (313) 455-0055 Extension 2431 DECEMBER 1991 - PAGE AA-111.004 STANDARD PARTS NUMERICAL USTlNG OF MATERlAL use recommended engineering specification shown on cross reference chart. (PAGE AA-111.006) DECEMBER 1991 PAGE AA-111.
5、005 STANDARD PARTS ENGINEERING MATERIAIS CROSS REFERENCE CHART RESTRICTED TO FORD ENGINEERS. SUPPLIERS ARE OBLIGATED TO SUPPLY PARTS EQUAL OR GREATER IN STRENGTH AS SPECIFIED. MANUFACTURING STANDARDS() M-1A14 M-1 AM-A M-1 A84-B M-1A84-C M-3199-C M-3199-D M-3420-A M-3420-8 M-3420-C M-3422 M-3500-G EQ
6、UIVALENT ENGINEERING SPECIFICATION * ESA-M 1 A1 4-A * ESB-MlA93-A * ESB-MlA94-A * ESB-MlA95-A * ESB-M 1 A1 386 * ESB-M 1 A1 39-A * ESB-M 1 A93-A * ESB-MlA94-A * ESB-MlA95-A * ESF-M 1 A!%-A * ESW-MlA150-GA RECOMMENDED ENGINEERING MATERIAL(3) ESA-M 1 A1 4-A To be developed, use ESB-MlA93-A To be devel
7、oped, use ESB-MlA94-A To be developed, use ESB-MlA95-A To be developed, use ESB-M 1 A1 38-A To be developed, use ESB-MlA139-A To be developed, use ESB-MlA93-A To be developed, use ESB-MlA94-A To be developed, use ESB-MlA95-A To be developed, use ESS-MlA170-B (Grade 8) ESF-MlA98-A (1) Manufacturing S
8、tandards should not be released for new applications. (2) These Product Engineering Specifications are renumbered conversions of old Manufacturing Standards. In those cases where theyhave not been revised to reflect current industry practice, a Recommended engineering material is listed which should
9、 be used for new releases. (3) Recommended Engineering Materials may not be exact equivalencies of Manufacturing Standards or Product Engineering Specifications, but should be specified for new releases. See detailed requirements of recommended material specifications in this section. * This specifi
10、cation is published in the Ford Motor Company Engineering Material Specifications Manual. Copies of this specification may be obtained from: Ford Motor Company Engineering Materials Program Headquarters 101 Union Street Plymouth, Michigan 481 70 Telephone: (313) 455-0055 Extension 2431 DECEMBER 1991
11、 PAGE AA-111.006 Standard Parts MATERIAL AND PERFORMANCE REQUIREMENTS FOR STEEL BOLTS, STUDS, MACHINE SCREWS, AND SEMS ESS-MlA170-B GENERAL. Parts covered by this specification shall meet all requirements defined herein for the appli- cable product and grade. CONTROL ITEM. Parts designated by the sy
12、mbol “0” are Control Items; affects compliance to Federal Regulations. 1. GRADES. Grades are designated by industry recognized numbers, where increasing numbers rep- resent increasing tensile strength, and by decimals of whole numbers representing variations at the same strength level. Table 1 shows
13、 required strength, chemistry, hardness, and grade identification marking on parts for each grade. Applications of grades to products are: Bolts and screws are limited to Grades 1, 2, 5, 5.2, 8, 8.1, 8.2 and 9. Grades 4 and 8.1 are limited to studs. Studs can also be specified in any other grade exc
14、ept 5.1. Grade 5.1 is limited to machine screws (sizes No. 4 through 318 inch diameter), and to sems (sizes No. 6 through 318 inch diameter) which are heat treated following assembly of the washer on the screw. Where Grade 5.1 is specified for machine screws or sems, either Grade 5 or Grade 5.2 is a
15、n accept- able alternate. 71 16 inch diameter sems are limited to Grade 5 or Grade 5.2. When Grade 5 is used for sems, screws and washers shall be heat treated before assembly. Grade 5.2 sems are heat treated following assembly of the washer on the screw. (Continued) APRIL 1985 Product Engineering P
16、AGE AA-111.01 , Standard Parts MATERIAL AND PERFORMANCE REQUIREMENTS FOR STEE-L BOLTS, STUDS, MACHINE SCREWS, AND SEMS ESS-“170-B TABLE 1 - GRADE REQUIREMENTS FOR MECHANICAL PROPERTIES, HARDNESS, CHEMISTRY, AND IDENTIFICATION 5 No. 6 thru 1 1-1/8 th 1-1/2 74.000 85.000 5.1 85,000 No. 6 thru 1.0 5.2
17、85.000 No. 6 thru 3/8 8 (9) 120.000 1/4 thru 1-1/2 8.1 (h) 1203000 1/4 thrU 1-1/2 8.2 144,000 1/4 thN 1 9 (k) 120,000 1/4 thru 1 L (a) I Surface 1 Core 60.000 74.000(h) 60.0CO 115.000 120.000 105,000 120,000 120,000 150.000 150,000 150.000 180,000 Tensile StrenpUl Hardness Rockatell 30N Ha: Mi%, psi
18、 hlU MIU. Ro I I 1 BiO BBO - 50 54 c22 B70 C25 C19 59 (325 56 C26 58.6 c33 - C32 59 c33 63 c39 rdr E E86 well nla. BlOO BlOO BlOO C32 c34 C30 c39 (1) C36 c39 C38 c39 C44 I I I - 1 0.55 1 0.058 I 1 0.048 - 0.28(c) 0.058(d) 0.048 0.55 0.28 0.55 0.15 0.30 0.15 0.25 0.28 0.55 0.28 0.55 0.15 0.25 0.31 0.
19、65 0.058 0.048 0.058 (e) - 0.048 0.058 0.048 0.058 0.74 0.048 0.045 0.040 0.058 - 0.048 0.058 0.74 0.048 0.045 - 0.045 Footnotes for Table 1: Proof load and minimum tensile strength values apply to full size parts. For machined test specimen values, see SAE 5429. Grade 2 requirements on sizes 1/4 th
20、rough 3/4 apply to bolts and screws 6 inches and shorter in length, and to studs of all lengths. For bolts and screws longer than 6 inches, Grade 1 requirements apply. Carbon content may be 0.55% max. for all sizes and lengths of studs, and for bolts and screws larger than 3/4 inch diameter and/or l
21、onger than 6 inches. For studs only, sulphur content may be 0.33% max. For studs only, sulphur content may be 0.13% Max. Cold drawn steel, for studs only. Alloy steel, quenched and tempered. (SAE 1541 carbon steel is an acceptable alternate for sizes 1/4 through 1/2 inch diameter). Alloy steel, or S
22、AE 1541 (modified) carbon steel, drawn at elevated temperature, for studs only. On studs 3/8 inch diameter and larger, one end of stud only shall be marked with conventional slash marks corresponding to grade level. - one or more of the alloying elements chromium, nickel, molybdenum or vanadium shal
23、l be present in the steel in sufficient quantity to assure that the specified strength proper- ties are met after oil quenching and tempering. Caution is advised when considering the use of class grade 9 bolts and screws. Capability of the bolt manufacturer, as well as the anticipated in-use environ
24、ment, should be considered, High strength products such as class grade 9, require rigid control of heat treating operations and careful monitoring of as-quenched hardness, surface discontinuities, depth of partial decarburization, and freedom from carburization. some environments may cause stress co
25、rrosion cracking of non-plated as well as electroplated products. Hex washer head and hex flange products without assembled washers shall have a core hardness not exceeding Rockwell C38 and a surface hardness not exceeding Rockwell 30N 57.5. (Continued) PAGE AA-111.02 Product Engineering JUNE 1982 S
26、tandard Parts MATERIAL AND PERFORMANCE REQUIREMENTS FOR STEEL BOLTS, STUDS, MACHINE SCREWS, AND SEMS ESS-MlA170-B 2. MATERIALS AND PROCESSES. 2.1 CHEMICAL COMPOSITION. Parts shall be made of steel conforming to limits specified in Table 1. In addition, Grade 8 parts shall be made of fine grain steel
27、, with hardenability that will produce a minimum hardness of Rockwell C 47 at the center of the threaded section one diameter from the end of the part after oil quenching. 2.2 HEADING PRACTICE. Bolts and screws made on automatic screw machines are not permitted. Grade 1 parts may be hot or cold head
28、ed. Grades 2, 5, 5.1, 5.2, 8, 8.1, 8.2 and 9 shall be cold headed in sizes up to 314 inch, inclusive, and in lengths up to 6 inches. Larger sizes and longer lengths may be hot or cold headed. 2.3 THREADING PRACTICE. Grades 2, 5. 5.1, 5.2, 8, 8.1, 8.2 and 9 bolts, screws, and sems shall be roll threa
29、ded in sizes up to 314 inch, inclusive, and in lengths up to 6 inches. Grade 1 parts and Grades 2, 5, 5.2, 8, 8.1, 8.2 and 9 bolts and screws in sizes over 314 inch, and/or longer than 6 inches, may be rolled, cut, or ground. Threads of all grades and sizes of studs may be rolled, cut, or ground. 2.
30、4 HEAT TREATMENT PRACTICE. Grade 1 bolts and screws, and Grades 1 and 2 studs need not be heat treated. Grade 2 cold headed carriage bolts, and other bolts and screws with thin heads, shall be stress relieved at 875F minimum. Grade 2 bolts and screws with hex and other standard heads may be similarl
31、y stress relieved to meet wedge tensile test requirements. Grade 5 bolts, screws, and studs shall be oil or water quench hardened and tempered at 800F minimum. Grade 5.1 and 5.2 machine screws and sems shall be quench hardened and tempered at 65OOF minimum. For Grade 5.1 sems, quenchants whose princ
32、ipal constituent is water shall not be used. Grade 8 bolts, screws, and studs shall be oil quench hardened and tempered at 800F minimum. When carbon restoration is used, it shall not be accomplished in the presence of nitro- gen compounds, such as in carbonitriding or cyaniding, and the surface hard
33、ness must be within the hardness requirements specified in Table 1. Grades 4 and 8.1 studs are manufactured from pretreated material and need no further heat treat- ment. 2.5 DECARBURIZATION. Unless otherwise specified, Grade 5,5.1,5.2.8,8.1,8.2 and 9 bolts, screws and studs shall conform to CLASS C
34、 unless CLASS B is specified, as described in SAE J121. 3. MECHANICAL REQUIREMENTS. Parts tested as defined in this specification shall meet requirements for proof load and minimum tensile strength as tabulated in Table 1. Test loads (in pounds) for specific diameters, grades, and thread series may
35、be calculated using values given in Table 1 and appropriate stress areas given in SAE J429. (Continued) APRIL 1985 Product Engineering PAGE AA- 1 1 1.03 32 32 24 24 20 18 16 14 13 12 11 10 9 8 .8 mu 1.0 1.25 1.5 1.75 (for Selected Grades and Sizes in Coarse Thread Series) G ?roof Loac Lb. 1,750 2,90
36、0 4,250 5,850 7,800 10,000 12 , 400 18,400 15,200 20,000 ide 2 Tens. Str. Min. , Lb. 2,350 3,900 5,750 7,850 10,500 13,500 16,700 24,700 27,700 36,400 I L ! -1 - Grades 5 Proof Load Lb. 750 1,500 2,050 2,700 4,450 6,600 9,050 15,500 28,400 39,300 51,500 1 , 200 12,100 19,200 1,870 2,652 4,820 7,641
37、11,110 1 Standard Parts MATERIAL AND PERFORMANCE REQUIREMENTS FOR STEEL BOLTS, STUDS, MACHINE SCREWS, AND SEMS ESS-MlAl70-B For convenience of those using this specification, proof load and minimum tensile strength test load values for a selected group of commonly used parts have been calculated and
38、 are given in Table 2, below. TABLE 2 - PROOF LOAD AND TENSILE STRENGTH REQUIREMENTS Nom. rrs. Size i Inch j i 6! 8j 10 i 1/4 1 5/16 : 3/8 I 1/2 9/16 1 - 12 1 7/16 i 3/4 58 I 7/8 j 4 M5 j M8 I M6 I Mlo 1 M12 i 5.1 where D is the nominal size of the bolt or screw. (See 2.2 and Figure 6) 3.6 BURSTS: 3
39、.6.1 Bursts in the flats of hex bolts and screws shall not exceed a width or an open depth of 0.010 inch plus 0.025 D, where D is the nominal bolt or screw size in inches. In addition, no burst shall extend into the bearing surface. 3.6.2 Flanges of bolts and screws shall not have more than one burs
40、t with a width greater than 0.005 inch plus 0.020 F or an open depth greater than 0.003 inch plus 0.012 F, and this one burst shall not exceed a width of 0.010 inch plus 0.040 F or an open depth of 0.006 inch plus 0.024 F, where F is the nominal flange diameter in inches. 3.6.3 Bursts at the periphe
41、ry of round head style screws shall not exceed an open width or depth of 0.010 inch plus 0.025 D, where D is the nominal screw size in inches. (See 2.3 and Figure 3) 3.7 SHEAR FAILURE. Shear failure on flanged bolts and screws shall not exceed a width of 0.020 for a depth greater than 0.030 F, where
42、 F is the nominal flange diameter in inches. (See 2.4 and Figure 3) 3.8 VOIDS ON BEARING SURFACE. Voids on the bearing surface of bolts and screws shall not exceed a depth of 0.010 inch and the combined area of all voids shall not exceed 5 per cent of the specified minimum area of the bearing surfac
43、e. (See 2.5 and Figure 4) 3.9 TOOL MARKS. Tool marks on the bearing surface shall not exceed a surface roughness height measurement of 110 microinches determined as the arithmetic average deviation from the mean surface. (See 2.8 and Figure 5) 3.10 NICKS AND GOUGES. Nicks and gouges located in the t
44、hreaded length shall not be of size and number which will interfere with assembly of the proper GO thread gage on the thread with the application of not more than 12 times D inch pounds of torbe, where D is the nominal bolt or screw size in inches. The manufacturer shall exercise due care during the
45、 manufacture and handling of bolts and screws to minimize the number and magnitude of nicks and gouges. (Continued) OCT 1980 Product Engineering PAGE AA-111.11 I Standard Parts SURFACE DISCONTINUITY STANDARDS FOR BOLTS AND SCREWS (Continued) ES-20000-Sl00 4. INSPECTION PROCEDURE. Bolts or screws sha
46、ll be inspected in accordance with the procedures outlined in 4.1 and 4.2 unless otherwise specified. 4.1 VISUAL INSPECTION. A representative sample* shall be picked at random from the lot. The sample shall be examined visually for quench cracks, bursts, shear failures, forging cracks, folds, tool m
47、arks, seams, voids on the bearing surface, and nicks and gouges. 4.1.1 If any bolts or screws are found with quench cracks or with folds at internal corners at or below the bearing surface, the lot shall be subject to rejection. 4.1.2 If any bolts or screws are found with seams, bursts, shear failur
48、es, forging cracks, tool marks, voids, or nicks and gouges which exceed the allowable limits as specified for the applicable type of discontinuity under Item 3, the lot shall be subject to rejection. 4.2 MAGNETIC ANALYSIS INSPECTION. The same sample (if acceptable by visual inspec- tion) shall then
49、be further examined for laps in threads and seams by magnetic inspection techniques (magna-glo, magna-flux, eddy current, etc.) . (NOTE: Other examining proce- dures may be used providing they have an equivalent ability to detect discontinuities of the size specified in 3.2 and 3.5) 4.2.1 All bolts or screws showing indications which could be interpreted as seams shall be set aside. From this group a secondary sample of those parts having the severest indi- cations shall be sectioned through the shank perpendicular to the axis, and etched for microscopic examinat
