ASTM A512 Cold-drawn Welded Steel Mechanical Tubes
covers cold-drawn buttweld carbon steel tubes for use as mechaninal tubing
This specification covers round,square,rectangular,and special shape mechanical tubing.
Round tube size ranges covered are outside diameters up 3 to1/2in.(88.9mm)and wall thickness from 0.035 to 0.500in.(0.89to12.70mm)
Chemical Composition Limits, % | |||||
Grade Designation |
Carbon |
Manganese |
Phospho-rus,max |
Sulfur, max |
|
MT |
1010 |
0.05-0.15 |
0.3-0.6 |
0.045 |
|
MT |
1015 |
0.10-0.20 |
0.3-0.6 |
0.04 |
0.045 |
MT X |
1015 |
0.10-0.20 |
0.6-0.9 |
0.04 |
0.045 |
MT |
1020 |
0.15-0.25 |
0.3-0.6 |
0.04 |
0.045 |
MT X |
1020 |
0.15-0.25 |
0.7-1.00 |
0.04 |
0.045 |
Rimmed or capped steels which may be used for the above grades are characterized by a lack of uniformity in their chemical composition, and for this reason product analysis is not technologically appropriate unless misapplication is clearly indicated.
Chemical Composition Limits, % | ||||
Grade DesignationB |
Carbon |
Manganese |
Phospho-rus,max |
Sulfur, max |
1008 |
0.10 max |
0.50 max |
0.040 |
0.045 |
1010 |
0.08–0.13 |
0.30–0.60 |
0.040 |
0.045 |
1012 |
0.10–0.15 |
0.30–0.60 |
0.040 |
0.045 |
1015 |
0.12–0.18 |
0.30–0.60 |
0.040 |
0.045 |
1016 |
0.12–0.18 |
0.60–0.90 |
0.040 |
0.045 |
1018 |
0.14–0.20 |
0.60–0.90 |
0.040 |
0.045 |
1019 |
0.14–0.20 |
0.70–1.00 |
0.040 |
0.045 |
1020 |
0.17–0.23 |
0.30–0.60 |
0.040 |
0.045 |
1021 |
0.17–0.23 |
0.60–0.90 |
0.040 |
0.045 |
1025 |
0.22–0.28 |
0.30–0.60 |
0.040 |
0.045 |
1026 |
0.22–0.28 |
0.60–0.90 |
0.040 |
0.045 |
1030 |
0.27–0.34 |
0.60–0.90 |
0.040 |
0.045 |
1035 |
0.31–0.38 |
0.60–0.90 |
0.040 |
0.045 |
1110 |
0.08–0.15 |
0.30–0.60 |
0.040 |
0.130C |
1115 |
0.13–0.20 |
0.60–0.90 |
0.040 |
0.130C |
1117 |
0.14–0.20 |
1.00–1.30 |
0.040 |
0.130C |
Rimmed or capped steels which may be used for the above grades are characterized by a lack of uniformity in their chemical composition, and for this reason product analysis is not technologically appropriate unless misapplication is clearly indicated.
B Other analyses are available.
C Grades 1110, 1115 and 1117 shall contain 0.08 min % sulfur.
Element |
Limit, or Maximum of Specified |
Variation, Over Maximum Limit or Under Minimum Limit |
|
Range, % |
Under min, % |
Over max, % |
|
Carbon |
To 0.15, incl |
0.02 |
0.03 |
Over 01.5 |
0.03 |
0.04 |
|
Manganeses |
To 0.60, incl |
0.03 |
0.03 |
O |
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