Air Hardening Drill Rod Info Doc
A-2 Drill Rod is air-hardening ground and polished. It can be used to replace O-1 for applications for safer heat treating, less distortion during hardening and greater wear resistance.
A-2 features good machinability, high stability after hardening, good wear resistance and is suitable for medium run tooling.
Chemical Composition
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Carbon .95/1.05
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Maganese 1.00 max
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Silicon .030 max
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Phosphorus .025 max.
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Sulphur .030 max.
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Chromium 4.75/5.50
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Vanadium .15/.50
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Tungsten ------------------
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Molybdenum .90/1.40
Tolerances Standard Diameter
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.06250 to 0.1240 +/- .0003"
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.01250 to 0.4990 +/- .0005"
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.05000 to 3.000 +/- .0010"
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Straightness
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.005" Max TIR in 12"
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+ .12500 - 0.00"
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Standard Length Tolerance
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+ .12500 -0.00"
UNS T30102
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SAE J-437
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ASTM A-681-94
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Federal QQT-570-Rev C
Surface Finish
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.06250 to 0.12499 10 RMS
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0.12500 to 0.4999 15 RMS
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0.5000 to 0.87499 20 RMS
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0.8750 to 3.000 30 RMS
Fractional Sizes Available in 3' & 12' Length
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1/16"
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5/64"
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3/32"
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7/64"
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1/8"
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9/64"
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5/32"
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11/64"
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3/16"
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13/64"
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7/32"
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15/64"
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1/4"
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17/64"
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9/32"
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19/64"
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5/16"
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21/64"
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11/32"
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23/64"
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3/8"
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25/64"
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13/32"
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27/64"
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7/16"
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29/64"
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15/32"
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31/64"
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1/2"
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17/32"
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9/16"
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19/32"
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5/8"
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21/32"
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11/16"
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23/32"
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3/4"
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13/16"
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7/8"
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15/16"
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1"
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1-1/8"
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1-1/4"
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1-3/8"
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1-1/2"
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1-3/4"
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2"
Letter Sizes Available in 3' & 12' Length
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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N
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O
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P
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Q
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R
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S
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T
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U
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V
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W
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X
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Y
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Z
Metric Sizes Available in 3' Length
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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18
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19
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20
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21
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22
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23
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24
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25