1、Designation: B90/B90M 07 B90/B90M 12Standard Specification forMagnesium-Alloy Sheet and Plate1This standard is issued under the fixed designation B90/B90M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope Scope*1.1 This specification covers magnesium alloys in
3、 sheet and plate form designated as shown in Table 1.1.2 The values stated in either inch-pound or SI units are to be regarded separately as standards. The SI units are shown inbrackets or in separate tables or columns. The values stated in each system are not exact equivalents; therefore, each syst
4、em mustbe used independent of the other. Combining values from the two systems may result in nonconformance with the specification.1.3 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.1.4 This standard does not purport to address a
5、ll of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 The following documents of the issue
6、in effect on date of material purchase form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy ProductsB557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-All
7、oy Products (Metric)B660 Practices for Packaging/Packing of Aluminum and Magnesium ProductsB951 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and WroughtB953 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical AnalysisB954 Test Method for Analysis o
8、f Magnesium and Magnesium Alloys by Atomic Emission SpectrometryE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE35 Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys (Withdrawn 2008)3E55 Practice for Sampling Wrought Nonferrous Me
9、tals and Alloys for Determination of Chemical Composition2.3 Federal Standards:3Fed. Std. No. 123 Marking for Shipment (Civil Agencies)Fed. Std. No. 184 Identification Marking of Aluminum, Magnesium and Titanium2.4 Military Standards:3MIL-STD-129 Marking for Shipment and StorageMIL-M-3171 Magnesium
10、Alloy, Processes for Pretreatment and Prevention of Corrosion2.5 Aerospace Materials Specification:4AMS-M-3171 Magnesium Alloy, Processes for Pretreatment and Prevention of Corrosion3. Terminology3.1 Definitions:3.1.1 platea rolled product rectangular in cross section and form, of thickness 0.250 in
11、., or more, over 6.30 mm, eithersheared or sawed edges.3.1.2 sheeta rolled product rectangular in cross section and form, of thickness of 0.006 through 0.249 in. over 0.15 through6.30 mm with sheared, slit, or sawed edges.4. Ordering Information4.1 Orders for sheet and plate to this specification sh
12、all include the following information:4.1.1 Quantity in pieces, lbs, or kg*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.2 Alloy (Section 5 and Table 1),4.1.3 Tempe
13、r (Section 6 and Table 2),4.1.4 Thickness, width, and length,4.1.5 Surface treatment (see 8.2),4.1.6 Whether inspection is required at the manufacturers works (see 13.1), and4.1.7 Whether certification of the material by the vendor is required (Section 15).5. Chemical Composition5.1 The sheet and pl
14、ate shall conform to the chemical requirements in Table 1.6. Tensile Properties6.1 The sheet and plate shall conform to the tensile requirements in Table 2 Table 3 unless another agreement is made betweenseller and purchaser. Properties for sizes and tempers not shown in Table 2 Table 3 shall be as
15、agreed upon by seller andpurchaser.1 This specification is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on MagnesiumAlloy Cast and Wrought Products.Current edition approved June 1, 2007Nov. 1, 2012. Published July 200
16、7November 2012. Originally approved in 1932. Last previous edition approved in 20052007 asB90/B90M 98 (2005).B90/B90M 07. DOI: 10.1520/B0090_B0090M-07.10.1520/B0090_B0090M-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. F
17、or Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.4 Available from SAE Intern
18、ational (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.TABLE 2 Tensile RequirementsNOTE 1For purposes of determining conformance with this specification, each value for tensile strength and yield strength shall be rounded to thenearest 0.1 ksi, and each value for elongatio
19、n shall be rounded to the nearest 0.5 %, both in accordance with the rounding method of Practice E29.Alloy and Temper Specified Thickness, in. Tensile Strength, min, ksi Yield Strength (0.2 %Offset), min, ksi Elongation in 2 in.,or 4 dia min, %AZ31B-O 0.0160.500 32.0A . . . 120.5012.000 32.0A . . .
20、102.0013.000 32.0A . . . 9AZ31B-H24 0.0160.249 39.0 29.0 60.2500.374 38.0 26.0 80.3750.500 37.0 24.0 80.5011.000 36.0 22.0 81.0012.000 34.0 20.0 82.0013.000 34.0 18.0 8AZ31B-H26 0.2500.374 39.0 27.0 60.3750.500 38.0 26.0 60.5010.750 37.0 25.0 60.7511.000 37.0 23.0 61.0011.500 35.0 22.0 61.5012.000 3
21、5.0 21.0 6A Tensile strength shall be 40.0 ksi max.B Tensile strength shall be 38.0 ksi max.TABLE 1 Chemical Composition LimitsANOTE 1Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements issuspected or indicated in a
22、mounts greater than the specified limits, further analysis shall be made to determine that these elements are not present in excessof the specified limits.NOTE 2The following applies to all specified limits in this table: For purposes of acceptance and rejection, an observed value or a calculated va
23、lueobtained from analysis should be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit.Composition %AAl Mn R.E. Zn Zr Ca Cu Fe Ni Si Each Total MgAZ31B 2.5-3.5 0.20-1.0 . . . 0.6-1.4 . . . 0.04 0.05 0.005 0.005 0.10 . . . 0.30 RemainderA Limits
24、 are in weight percent maximum unless shown as a range.B90/B90M 1227. Dimensional Tolerances7.1 Variations from the specified thickness shall not exceed the amounts prescribed in Table 4 Table 5.7.2 Variations from the specified width shall not exceed the amounts prescribed in Table 6 Table 7, Table
25、 8 Table 9, and Table10 Table 11.7.3 Variations from the specified length shall not exceed the amounts prescribed in Table 12 Table 13.7.4 Squareness of sheet and plate shall conform to the requirements of Table 14 Table 15.7.5 Flatness of sheet and plate shall conform to the requirements of Table 1
26、6 Table 17.TABLE 3 Tensile Requirements MetricAAlloy andTemperSpecifiedThickness, mmTensileStrength, MPaBYield Strength(0.2 % offset), MPa Elongation, min %Over Through Min Max Min in 50 mmC in 5 dia(5.65 V A)AZ31B-O 0.40 12.50 221 275 . . . 12 . . .12.50 50.00 221 275 . . . . . . 950.00 80.00 221 2
27、75 . . . . . . 8AZ31B-H24 0.40 6.30 269 . . . 200 6 . . .6.30 10.00 262 . . . 179 8 . . .10.00 12.50 255 . . . 165 8 . . .12.50 25.00 248 . . . 152 . . . 725.00 50.00 234 . . . 138 . . . 750.00 80.00 234 . . . 124 . . . 7AZ31B-H26 6.30 10.00 269 . . . 186 6 . . .10.00 12.50 262 . . . 179 6 . . .12.5
28、0 20.00 255 . . . 172 . . . 520.00 25.00 255 . . . 159 . . . 525.00 40.00 241 . . . 152 . . . 540.00 50.00 241 . . . 148 . . . 5A The basis for establishment of mechanical property limits as shown in Appendix X1.B To determine conformance to this specification each value for tensile strength shall b
29、e rounded to the nearest 1 MPa and each value for elongation to the nearest 0.5 %,both in accordance with the rounding-off method of Practice E29.C Elongation in 50 mm apply for thicknesses up through 12.50 mm and in 5 diameter (5.65 V A) for thicknesses over 12.50 mm where A is the cross-sectional
30、area ofthe specimen.TABLE 4 Thickness Tolerances for Magnesium Flat and Coiled Sheet and PlateAThickness tolerance, in. SpecifiedThickness, in.SpecifiedWidths up to18, inclOver 18through 36Over 36through 48Over 48through 54Over 54through 60Over 60through 66Over 66through 720.0160.028 0.0015 0.002 0.
31、0025 0.0035 0.004 0.004 0.0040.0290.036 0.002 0.002 0.0025 0.004 0.005 0.005 0.0050.0370.045 0.002 0.0025 0.003 0.004 0.005 0.005 0.0050.0460.068 0.0025 0.003 0.004 0.005 0.006 0.006 0.0060.0690.076 0.003 0.003 0.004 0.005 0.006 0.006 0.0060.0770.096 0.0035 0.0035 0.004 0.005 0.006 0.006 0.0060.0970
32、.108 0.004 0.004 0.005 0.005 0.007 0.007 0.0070.1090.125 0.0045 0.0045 0.005 0.005 0.007 0.007 0.0070.1260.140 0.0045 0.0045 0.005 0.005 0.007 0.010 0.0120.1410.172 0.006 0.006 0.008 0.008 0.009 0.012 0.0140.1730.203 0.007 0.007 0.010 0.010 0.011 0.014 0.0160.2040.249 0.009 0.009 0.011 0.011 0.013 0
33、.016 0.0180.2500.320 0.013 0.013 0.013 0.013 0.015 0.018 0.0200.3210.438 0.019 0.019 0.019 0.019 0.020 0.020 0.0230.4390.625 0.025 0.025 0.025 0.025 0.025 0.025 0.0250.6260.875 0.030 0.030 0.030 0.030 0.030 0.030 0.0300.8761.125 0.035 0.035 0.035 0.035 0.035 0.035 0.0351.1261.375 0.040 0.040 0.040 0
34、.040 0.040 0.040 0.0401.3761.625 0.045 0.045 0.045 0.045 0.045 0.045 0.0451.6261.875 0.052 0.052 0.052 0.052 0.052 0.052 0.0521.8762.250 0.060 0.060 0.060 0.060 0.060 0.060 0.0602.2512.750 0.075 0.075 0.075 0.075 0.075 0.075 0.0752.7513.000 0.090 0.090 0.090 0.090 0.090 0.090 0.0903.0014.000 0.110 0
35、.110 0.110 0.110 0.110 0.110 0.1104.0015.000 0.125 0.125 0.125 0.125 0.125 0.125 0.1255.0016.000 0.135 0.135 0.135 0.135 0.135 0.135 0.135A When a dimension tolerance is specified other than as an equal bilateral tolerance, the value of the standard tolerance is that applying to the mean of maximum
36、andminimum dimensions permissible under the tolerance.B90/B90M 1237.6 Lateral bow of sheet and plate shall conform to the requirements of Table 18 Table 19 and Table 20 Table 21.8. Workmanship, Finish and Appearance8.1 All sheet and plate shall be commercially flat and free of buckles, shall be free
37、 of injurious surface defects, and have aworkmanlike finish.8.2 The sheet or plate shall be supplied in the finish specified by the purchaser. One of the following finishes should be specified:8.2.1 Mill finish,8.2.2 Mill finish and oiled,8.2.3 Chrome pickled, orTABLE 5 Thickness Tolerances for Magn
38、esium Flat and Coiled Sheet and Plate MetricASpecified Thickness,mmOver ThroughThickness tolerance, mmSpecifiedWidths upto 450,incl.Over450Through900Over900Through1200Over1200Through1350Over1350Through1500Over1500Through1650Over1650Through18500.400.70 0.04 0.05 0.06 0.09 0.10 0.10 0.100.700.90 0.05
39、0.05 0.06 0.10 0.12 0.12 0.120.901.15 0.05 0.06 0.07 0.10 0.12 0.12 0.121.151.70 0.06 0.07 0.10 0.12 0.15 0.15 0.151.701.90 0.07 0.07 0.10 0.12 0.15 0.15 0.151.902.40 0.09 0.09 0.10 0.12 0.15 0.15 0.152.402.76 0.10 0.10 0.12 0.12 0.18 0.18 0.182.763.17 0.11 0.11 0.12 0.12 0.18 0.18 0.183.173.55 0.11
40、 0.11 0.12 0.12 0.18 0.25 0.303.554.35 0.15 0.15 0.20 0.20 0.22 0.30 0.354.355.15 0.18 0.18 0.25 0.25 0.27 0.35 0.405.156.30 0.23 0.23 0.28 0.27 0.33 0.40 0.456.308.00 0.33 0.33 0.33 0.33 0.38 0.45 0.508.0011.10 0.48 0.48 0.48 0.48 0.50 0.50 0.5811.1015.75 0.63 0.63 0.63 0.63 0.63 0.63 0.6315.7522.2
41、0 0.75 0.75 0.75 0.75 0.75 0.75 0.7522.2028.50 0.89 0.88 0.88 0.88 0.88 0.88 0.8828.5034.90 1.00 1.00 1.00 1.00 1.00 1.00 1.0034.9041.25 1.14 1.14 1.14 1.14 1.14 1.14 1.1441.2547.60 1.32 1.32 1.32 1.32 1.32 1.32 1.3247.6057.15 1.52 1.52 1.52 1.52 1.52 1.52 1.5257.1569.85 1.90 1.90 1.90 1.90 1.90 1.9
42、0 1.9069.8576.20 2.28 2.25 2.25 2.25 2.25 2.25 2.2576.20100.00 2.79 2.75 2.75 2.75 2.75 2.75 2.75100.00125.00 3.15 3.15 3.15 3.15 3.15 3.15 3.15125.00150.00 3.40 3.40 3.40 3.40 3.40 3.40 3.40A When a dimension tolerance is specified other than as an equal bilateral tolerance, the value of the standa
43、rd tolerance is that applying to the mean of maximum andminimum dimensions permissible under the tolerance.TABLE 6 Width TolerancesMagnesium Flat SheetASpecifiedThickness, in.Width tolerances, in. SpecifiedWidths upthrough 4Over 4through18Over 18through36Over 36through54Over 54through720.0160.064 1/
44、32 1/16 3/32 1/8 5/320.0650.102 1/16 1/16 3/32 1/8 5/320.1030.249 1/8 3/32 1/8 3/16 3/16A 0.0160.099 sheared to above tolerances.0.1000.249 sawed or sheared to above tolerances.TABLE 7 Width Tolerances, Magnesium Flat Sheet MetricASpecifiedThickness, mmOver ThroughWidth tolerances, mm SpecifiedWidth
45、s upThrough100Over100Through450Over450Through900Over900Through1350Over1350Through18500.401.60 1.0 1.5 2.5 3 41.602.60 1.5 1.5 2.5 3 42.606.30 3.0 2.5 3.0 5 5A Over 0.40 through 2.50 sheared to above tolerances. Over 2.50 through 6.30sawed or sheared to above tolerances.B90/B90M 1248.2.4 Chrome pickl
46、ed and oiled.9. Sampling for Chemical Analysis9.1 IngotAt least one sample shall be taken for each group of ingots of the same alloy poured from the same source of moltenmetal and analyzed to determine conformance to Table 1. Ingots not conforming shall be rejected.9.2 Finished ProductUnless complia
47、nce is established by 9.1, sampling of the finished product shall be according to PracticeE55. One sample shall be taken for 4000 lb 1815 kg or less of material comprising the lot, except that not more than one analysisshall be required per piece.TABLE 8 Width and Length TolerancesMagnesium SawedFla
48、t PlateSpecifiedThickness, in.Tolerances, in. specified widthA or length, in.Upthrough 10Over 10through 48Over 48through 84 Over 840.2506.000 3/32 3/16 1/4 5/16A Maximum width = 72 in.TABLE 9 Width and Length Tolerances, Magnesium Sawed FlatPlate MetricSpecifiedThickness, mmOver ThroughTolerances, m
49、m specified widthA or lengthUpThrough250Over250Through1200Over1200Through2000Over20006.30150.0 2.5 5 6.5 8A Maximum width = 1850 mm.TABLE 10 Width TolerancesMagnesium Coiled SheetSpecifiedThickness, in.Width Tolerances, in. SpecifiedWidths upthrough 6Over 6through12Over 12through24Over 24through48Over 48through600.0160.125 0.010 0.016 1/32 3/64 1/16TABLE 11 Width Tolerances, Magnesium Coiled Sheet MetricSpecifiedThickness, mmOver Th
