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You are in: HOME > Technical Information > Mechanical Property and Chemical Requirements (Composition) > ASTM A 194/A 194M Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both |
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| ASTM A 194/A 194M -05 TABLE 1 Chemical Requirements |
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Grade Symbol
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Material
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UNS Number
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Carbon, %
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Manga- nese, %
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Phospho- rus, %
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Sulfur, %
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Silicon, %
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Chromium, %
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Nickel, %
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Molyb- denum, %
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Tita- nium. %
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2,2HM and 2H
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carbon
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0.4min
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1.00
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0.040
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0.050
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0.40
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4
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Cr-Mo
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0.40-0.50
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0.70-0.90
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0.035
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0.040
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0.15-0.35
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0.20-0.30
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6
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Type 410
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S41000
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0.15
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1.00
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0.040
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0.030
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1.00
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11.5-13.5
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7.7M
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Type 4140
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0.37-0.49
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0.65-1.10
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0.035
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0.040
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0.15-0.35
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0.75-1.20
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0.15-0.25
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8.8A
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Type 304
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S30400
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0.08
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2.00
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0.045
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0.030
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1.00
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18.0-20.0
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8.0-11.0
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8M, 8MA
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Type 316
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S31600
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0.08
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2.00
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0.045
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0.030
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1.00
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16.0-18.0
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10.0-14.0
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2.00-3.00
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8T,8TA
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Type 321
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S32100
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0.08
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2.00
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0.045
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0.030
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1.00
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17.0-19.0
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9.0-12.0
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5X(C+N)min, 0.70 max
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8P,8PA
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Type 305
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S30500
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0.08
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2.00
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0.045
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0.030
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1.00
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17.0-19.0
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11.0-13
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16
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Cr-Mo-Va
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0.36-0.47
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0.45-0.70
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0.035
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0.040
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0.15-0.35
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0.80-1.15
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0.50-0.65
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Va:0.25-0.35, Al: 0.015
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| ASTM A 194/A 194M - 05 TABLE 2 Hardness Requirements of Completed Nuts |
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Grade and Type
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Brinell Hardness
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Rockwell Hardness
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C Scale
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B Scale
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2
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159 to 352
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84 min
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2H
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248 to 327
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24 to 35
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To 1 1/2 in. or M36.incl
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248 to 327
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24 to 35
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Over 1 1/2 in. or M36
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212 to 327
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35 max
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95 min
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2HM and 7M
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159 to 235
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84 to 99
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4,7,and 16
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248 to 327
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24 to 35
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6
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228 to 271
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20 to 28
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8, 8M, 8T,8P
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126 to 300
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...
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60 to 105
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8A, 8MA, 8TA,
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126 to 192
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...
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60 to 90
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8PA
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126 to 192
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...
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60 to 90
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| ASTM A 194/A 194M - 05 TABLE 3 Proof Load in lbf Using Threaded Mandrel - Inch Series |
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Nominal
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Threads
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Stress Area
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Grade. 2,2HM,6,7M
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Grade.2H,4,7,16
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All Type of Grade 8
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Size, in.
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per Inch
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in2 .
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Heavy HexD
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HexE
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Heavy HexF
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HexG
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Heavy HexH
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HexJ
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1/4
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20
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0.0316
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4 770
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4 300
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5 570
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4 770
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2 540
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2 380
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5/16
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18
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0.0524
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7 860
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7 070
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9 170
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7 860
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4 190
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3 930
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3/8
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16
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0.0774
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11 620
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10 460
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13 560
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11 620
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6 200
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5 810
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7/16
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14
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0.1063
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15 940
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14 350
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18 600
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15 940
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8 500
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7 970
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1/2
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13
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0.1419
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21 280
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19 160
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24 830
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21 280
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11 350
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10 640
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9/16
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12
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0.182
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27 300
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24 570
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31 850
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27 300
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14 560
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13 650
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5/8
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11
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0.226
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33 900
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30 510
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39 550
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33 900
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18 080
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16 950
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3/4
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10
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0.334
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50 100
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45 090
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58 450
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50 100
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26 720
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25 050
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7/8
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9
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0.462
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69 300
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62 370
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80 850
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69 300
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36 960
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34 650
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1
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8
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0.606
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90 090
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81 810
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106 000
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90 900
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48 480
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45 450
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1 1/8
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8
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0.790
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118 500
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106 700
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138 200
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118 500
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63 200
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59 250
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1 1/4
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8
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1.000
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150 000
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135 000
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175 000
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150 000
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80 000
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75 000
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1 3/8
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8
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1.233
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185 000
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166 500
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215 800
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185 000
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98 640
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92 450
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1 1/2
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8
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1.492
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223 800
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201 400
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261 100
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223 800
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119 360
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111 900
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| ASTM A 194/A 194M - 05 TABLE 3 Proof Load in kN Using Threaded Mandrel - Metric |
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Nominal Size, in.
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Threads Pitch
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Stress Area mm2.
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Grade. 2,2HM,6,7M
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Grade.2H,4,7,16
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All Type of Grade 8
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|
Heavy HexD
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HexE
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Heavy HexF
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HexG
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Heavy HexH
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HexJ
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M6
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1.0
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20.1
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20.8
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18.7
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29.2
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20.8
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11.1
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10.4
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M8
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1.25
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36.6
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37.9
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34.0
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44.1
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37.9
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20.1
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18.8
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M10
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1.50
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58.0
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60.0
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53.9
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69.9
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60.0
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31.9
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29.9
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M12
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1.75
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84.3
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87.3
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78.4
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101.6
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87.3
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46.4
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43.4
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M14
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2.0
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115.0
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119.0
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107.0
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138.6
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119.0
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63.3
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59.2
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M16
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2.0
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157.0
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162.5
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146.0
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189.2
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162.5
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86.4
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80.9
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M20
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2.5
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245.0
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253.6
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227.8
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295.2
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253.6
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134.8
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126.2
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M22
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2.5
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303.0
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313.6
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281.8
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365.1
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313.6
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166.7
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156.0
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M24
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3.0
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353.0
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365.4
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328.3
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425.4
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365.4
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194.2
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181.8
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M27
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3.0
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459.0
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475.1
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426.9
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553.4
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475.1
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252.5
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236.4
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M30
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3.5
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561.0
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580.6
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521.7
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676.0
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580.6
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308.6
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288.9
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M36
|
4.0
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817.0
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845.6
|
759.8
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984.5
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845.6
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449.4
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420.8
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D Based on proof stress of 1035 MPa.
E Based on proof stress of 930 MPa.
F Based on proof stress of 1205 MPa.
G Based on proof stress of 1035 MPa.
H Based on proof stress of 550 MPa.
J Based on proof stress of 515 MPa. |
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