Totten Tubes stocks a huge selection of A519 seamless mechanical steel tube, with sizes and styles to match any requirements. The ASTM A519 steel tube specification covers both hot-finished and cold-finished mechanical tubing in sizes up to 12-3/4” O.D. A519 is available in round, square, and rectangular profiles, and in special sections.

A519 seamless tubing is commonly used in applications requiring machining, heat treating, close tolerances, smooth finishes, and/or definite physical properties.
 
Request an eQuote or contact Totten Tubes for more information on A519 mechanical steel tubing.
 
Aspects of the ASTM A519 specification that are most relevant here include:

A519 Steel Tube Materials & Manufacture

Steel used to produce A519 steel tube may be made by any process; if the purchaser requires a specified type of melting, please note this in your RFQ or when ordering. A519 tubes must be made in a seamless process and either hot finished or cold finished, as specified.

Chemical Requirements for A519 Seamless Steel Tubing

For Low-Carbon Steels

Chemical Requirements of Low-Carbon Steel 

Grade Designation Chemical Composition Limits, %
Carbon Manganese Phosphorus, max Sulfur, max
MT 1010 0.05-0.15 0.30-0.60 0.040 0.050
MT 1015 0.10-0.20 0.30-0.60 0.040 0.050
MT X 1015 0.10-0.20 0.60-0.90 0.040 0.050
MT 1020 0.15-0.25 0.30-0.60 0.040 0.050
MT X 1020 0.15-0.25 0.70-1.00 0.040 0.050
 

Chemical Requirements of Other Carbon Steels 

Grade Designation Chemical Composition Limits, %
Carbon Manganese Phosphorus, max Sulfur, max
1008 0.10 max 0.30-0.50 0.040 0.050
1010 0.08-0.13 0.30-0.60 0.050
1012 0.10-0.15 0.30-0.60 0.040 0.050
1015 0.13-0.15 0.30-0.60 0.040 0.050
1016 0.13-0.18 0.60-0.90 0.040 0.050
1017 0.15-0.20 0.30-0.60 0.040 0.050
1018 0.15-0.20 0.60-0.90 0.040 0.050
1019 0.15-0.20 0.70-1.00 0.040 0.050
1020 0.18-0.23 0.30-0.60 0.040 0.050
1021 0.18-0.23 0.60-0.90 0.040 0.050
1022 0.18-0.23 0.70-1.00 0.040 0.050
1025 0.22-0.28 0.30-0.60 0.040 0.050
1026 0.22-0.28 0.60-0.90 0.040 0.050
1030 0.28-0.34 0.60-0.90 0.040 0.050
1035 0.32-0.38 0.60-0.90 0.040 0.050
1040 0.37-0.44 0.60-0.90 0.040 0.050
1045 0.43-0.50 0.60-0.90 0.040 0.050
1050 0.48-0.55 0.60-0.90 0.040 0.050
1518 0.15-0.21 1.10-1.40 0.040 0.050
1524 0.19-0.25 1.35-1.65 0.040 0.050
1541 0.36-0.44 1.35-1.65 0.040 0.050
 

Chemical Requirements for Alloy Steels 

Grade Designation Chemical Composition Limits, %
Carbon Manganese Phosphorus, max Sulfur, max Silicon Nickel Chromium Molybdenum
1330 0.28-0.33 1.60-1.90 0.040 0.040 0.15-0.35 - - -
1335 0.33-0.38 1.60-1.90 0.040 0.040 0.15-0.35 - - -
1340 0.38-0.43 1.60-1.90 0.040 0.040 0.15-0.35 - - -
1345 0.43-0.48 1.60-1.90 0.040 0.040 0.15-0.35 - - -
3140 0.38-0.43 0.70-0.90 0.040 0.040 0.15-0.35 1.10-1.40 0.55-0.75 -
E3310 0.08-0.13 0.45-0.60 0.025 0.025 0.15-0.35 3.25-3.75 1.40-1.75 -
4012 0.09-0.14 0.75-1.00 0.040 0.040 0.15-0.35 - - 0.15-0.25
4023 0.20-0.25 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.20-0.30
4024 0.20-0.25 0.70-0.90 0.040 0.035-0.050 0.15-0.35 - - 0.20-0.30
4027 0.25-0.30 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.20-0.30
4028 0.25-0.30 0.70-0.90 0.040 0.035-0.050 0.15-0.35 - - 0.20-0.30
4037 0.35-0.40 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.20-0.30
4042 0.40-0.45 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.20-0.30
4047 0.45-0.50 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.20-0.30
4063 0.60-0.67 0.75-1.00 0.040 0.040 0.15-0.35 - - 0.20-0.30
4118 0.18-0.23 0.70-0.90 0.040 0.040 0.15-0.35 - 0.40-0.60 0.08-0.15
4130 0.28-0.33 0.40-0.60 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4135 0.33-0.38 0.70-0.90 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4137 0.35-0.40 0.70-0.90 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4140 0.38-0.43 0.75-1.00 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4142 0.40-0.45 0.75-1.00 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4145 0.43-0.48 0.75-1.00 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4147 0.45-0.50 0.75-1.00 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4150 0.48-0.53 0.75-1.00 0.040 0.040 0.15-0.35 - 0.80-1.10 0.15-0.25
4320 0.17-0.22 0.45-0.65 0.040 0.040 0.15-0.35 1.65-2.00 0.40-0.60 0.20-0.30
4337 0.35-0.40 0.60-0.80 0.040 0.040 0.15-0.35 1.65-2.00 0.70-0.90 0.20-0.30
E4337 0.35-0.40 0.65-0.85 0.025 0.025 0.15-0.35 1.65-2.00 0.70-0.90 0.20-0.30
4340 0.38-0.43 0.60-0.80 0.040 0.040 0.15-0.35 1.65-2.00 0.70-0.90 0.20-0.30
E4340 0.38-0.43 0.65-0.85 0.025 0.025 0.15-0.35 1.65-2.00 0.70-0.90 0.20-0.30
4422 0.20-0.25 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.35-0.45
4427 0.24-0.29 0.70-0.90 0.040 0.040 0.15-0.35 - - 0.35-0.45
4520 0.18-0.23 0.45-0.65 0.040 0.040 0.15-0.35 - - 0.45-0.60
4615 0.13-0.18 0.45-0.65 0.040 0.040 0.15-0.35 1.65-2.00 - 0.20-0.30
4617 0.15-0.20 0.45-0.65 0.040 0.040 0.15-0.35 1.65-2.00 - 0.20-0.30
4620 0.17-0.22 0.45-0.65 0.040 0.040 0.15-0.35 1.65-2.00 - 0.20-0.30
4621 0.18-0.23 0.70-0.90 0.040 0.040 0.15-0.35 1.65-2.00 - 0.20-0.30
4718 0.16-0.21 0.70-0.90 0.040 0.040 0.15-0.35 0.90-1.20 0.35-0.55 0.30-0.40
4720 0.17-0.22 0.50-0.70 0.040 0.040 0.15-0.35 0.90-1.20 0.35-0.55 0.15-0.25
4815 0.13-0.18 0.40-0.60 0.040 0.040 0.15-0.35 3.25-3.75 - 0.20-0.30
4817 0.15-0.20 0.40-0.60 0.040 0.040 0.15-0.35 3.25-3.75 - 0.20-0.30
4820 0.18-0.23 0.50-0.70 0.040 0.040 0.15-0.35 3.25-3.75 - 0.20-0.30
5015 0.12-0.17 0.30-0.50 0.040 0.040 0.15-0.35 - 0.30-0.50 -
5046 0.43-0.50 0.75-1.00 0.040 0.040 0.15-0.35 - 0.20-0.35 -
5115 0.13-0.18 0.70-0.90 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5120 0.17-0.22 0.70-0.90 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5130 0.28-0.33 0.70-0.90 0.040 0.040 0.15-0.35 - 0.80-1.10 -
5132 0.30-0.35 0.60-0.80 0.040 0.040 0.15-0.35 - 0.75-1.00 -
5135 0.33-0.38 0.60-0.80 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5140 0.38-0.43 0.70-0.90 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5145 0.43-0.48 0.70-0.90 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5147 0.45-0.52 0.70-0.95 0.040 0.040 0.15-0.35 - 0.85-1.15 -
5150 0.48-0.53 0.70-0.90 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5155 0.50-0.60 0.70-0.90 0.040 0.040 0.15-0.35 - 0.70-0.90 -
5160 0.55-0.65 0.75-1.00 0.040 0.040 0.15-0.35 - 0.70-0.90 -
E50100 0.95-1.10 0.25-0.45 0.025 0.025 0.15-0.35 - 0.40-0.60 -
E51100 0.95-1.10 0.25-0.45 0.025 0.025 0.15-0.35 - 0.90-1.15 -
E52100 0.95-1.10 0.25-0.45 0.025 0.025 0.15-0.35 - 1.30-1.60 -
                Vanadium
6118 0.16-0.21 0.50-0.70 0.040 0.040 0.15-0.35 - 0.50-0.70 0.10-0.15
6120 0.17-0.22 0.70-0.90 0.040 0.040   - 0.70-0.90 0.10
                min
6150 0.48-0.53 0.48-0.53 0.040 0.040   - 0.80-1.10 0.15
                min
            Aluminum   Molybdenum
E7140 0.38-0.43 0.50-0.70 0.025 0.025 0.15-0.40 0.95-1.30 1.40-1.80 0.30-0.40
            Nickel    
8115 0.13-0.18 0.70-0.90 0.040 0.040 0.15-0.35 0.20-0.40 0.30-0.50 0.08-0.15
8615 0.13-0.18 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8617 0.15-0.20 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8620 0.18-0.23 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8622 0.20-0.25 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8625 0.23-0.28 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8627 0.25-0.30 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8630 0.28-0.33 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8637 0.35-0.40 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8640 0.38-0.43 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8642 0.40-0.45 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8645 0.43-0.48 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8650 0.48-0.53 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8655 0.50-0.60 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8660 0.55-0.65 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
8720 0.18-0.23 0.70-0.90 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.20-0.30
8735 0.33-0.38 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.20-0.30
8740 0.38-0.43 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.20-0.30
8742 0.40-0.45 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.20-0.30
8822 0.20-0.25 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.20-0.30
9255 0.50-0.60 0.70-0.95 0.040 0.040 1.80-2.20 - - -
9260 0.55-0.65 0.70-1.00 0.040 0.040 1.80-2.20 - - -
9262 0.55-0.65 0.75-1.00 0.040 0.040 1.80-2.20 - 0.25-0.40 -
E9310 0.08-0.13 0.45-0.65 0.025 0.025 0.15-0.35 3.00-3.50 1.00-1.40 0.08-0.15
9840 0.38-0.43 0.70-0.90 0.040 0.040 0.15-0.35 0.85-1.15 0.70-0.90 0.20-0.30
9850 0.48-0.53 0.70-0.90 0.040 0.040 0.15-0.35 0.85-1.15 0.70-0.90 0.20-0.30
50B40 0.38-0.42 0.75-1.00 0.040 0.040 0.15-0.35 - 0.40-0.60 -
50B44 0.43-0.48 0.75-1.00 0.040 0.040 0.15-0.35 - 0.40-0.60 -
50B46 0.43-0.50 0.75-1.00 0.040 0.040 0.15-0.35 - 0.20-0.35 -
50B50 0.48-0.53 0.74-1.00 0.040 0.040 0.15-0.35 - 0.40-0.60 -
50B60 0.55-0.65 0.75-1.00 0.040 0.040 0.15-0.35 - 0.40-0.60 -
51B60 0.55-0.65 0.75-1.00 0.040 0.040 0.15-0.35 - 0.70-0.90 -
81B45 0.43-0.48 0.75-1.00 0.040 0.040 0.15-0.35 0.20-0.40 0.35-0.55 0.08-0.15
86B45 0.43-0.48 0.75-1.00 0.040 0.040 0.15-0.35 0.40-0.70 0.40-0.60 0.15-0.25
94B15 0.13-0.18 0.75-1.00 0.040 0.040 0.15-0.35 0.30-0.60 0.30-0.50 0.08-0.15
94B17 0.15-0.20 0.75-1.00 0.040 0.040 0.15-0.35 0.30-0.60 0.30-0.50 0.08-0.15
94B30 0.28-0.33 0.75-1.00 0.040 0.040 0.15-0.35 0.30-0.60 0.30-0.50 0.08-0.15
94B40 0.38-0.43 0.75-1.00 0.040 0.040 0.15-0.35 0.30-0.60 0.30-0.50 0.08-0.15
 

Chemical Requirements of Resulfurized and/or Rephosphorized, Carbon Steels 

Grade Designation Chemical Composition Limits, %
Carbon Manganese Phosphorous Sulfur Lead
1118 0.14-0.20 1.30-1.60 0.040 max 0.08-0.13  
11L18 0.14-0.20 1.30-1.60 0.040 max 0.08-0.13 0.15-.035
1132 0.27-0.34 1.35-1.65 0.040 max 0.08-0.13  
1137 0.32-0.39 1.35-1.65 0.040 max 0.08-0.13  
1141 0.37-0.45 1.35-1.65 0.040 max 0.08-0.13  
1144 0.40-0.48 1.35-1.65 0.040 max 0.24-0.33  
1213 0.13 max 0.70-1.10 0.07-0.12 0.24-0.33  
12L14 0.15 max 0.85-1.15 0.04-0.09 0.26-0.35 0.15-.035
1215 0.09 max 0.75-1.05 0.04-0.09 0.26-0.35  

Outside Diameter Tolerances for Round Hot-Finished Tubing

Outside Diameter Size Range,
in.(mm)
Outside Diameter Tolerance, in. (mm)
Over Under
Up to 2.999 (76.17) 0.020 (0.51) 0.020 (0.51)
3.000-4.499 (76.20-114.27) 0.025 (0.64) 0.025 (0.64)
4.500-5.99 (114.30-152.37) 0.031 (0.79) 0.031 (0.79)
6.000-7.499 (152.40-190.47) 0.037 (0.94) 0.037 (0.94)
7.500-8.999 (190.50-228) 0.045 (1.14) 0.045 (1.14)
9.000-10.750 (228.60-273.05) 0.050 (1.27) 0.050 (1.27)

Outside and Inside Diameter Tolerances for Round Cold-Worked Tubing

Outside Diameter Size Range, in. Thermal Treatment after Final Cold Work Producing Size
Wall Thickness as Percent of Outside Diameter None, or not exceeding 1100°F Nominal Temperature Heated Above 1100°F Nominal Temperature Without Accelerated Cooling Quenched and Tempered
OD, in. ID, in. OD, in. ID, in. OD, in. ID, in.
Over Under Over Under Over Under Over Under Over Under Over Under
Up to 0.499 all 0.004 0.000 -- -- 0.005 0.002 -- -- 0.010 0.010 0.010 0.010
0.500 - 1,699 all 0.005 0.000 0.000 0.005 0.007 0.002 0.002 0.007 0.015 0.015 0.015 0.015
1,700 - 2,099 all 0.006 0.000 0.000 0.006 0.006 0.005 0.005 0.006 0.020 0.020 0.020 0.020
2,100 - 2,499 all 0.007 0.000 0.000 0.007 0.008 0.005 0.005 0.008 0.023 0.023 0.023 0.023
2,500 - 2,899 all 0.008 0.000 0.000 0.008 0.009 0.005 0.005 0.009 0.025 0.025 0.025 0.025
2,900 - 3,299 all 0.009 0.000 0.000 0.009 0.011 0.005 0.005 0.011 0.028 0.028 0.028 0.028
3,300 - 3,699 all 0.010 0.000 0.000 0.010 0.013 0.005 0.005 0.013 0.030 0.030 0.030 0.030
3,700 - 4,099 all 0.011 0.000 0.000 0.011 0.013 0.007 0.010 0.010 0.033 0.033 0.033 0.033
4,100 - 4,499 all 0.012 0.000 0.000 0.012 0.014 0.007 0.011 0.011 0.036 0.036 0.036 0.036
4,500 - 4,899 all 0.013 0.000 0.000 0.013 0.016 0.007 0.012 0.012 0.038 0.038 0.038 0.038
4,900 - 5,299 all 0.014 0.000 0.000 0.014 0.018 0.007 0.013 0.013 0.041 0.041 0.041 0.041
5,300 - 5,549 all 0.015 0.000 0.000 0.015 0.020 0.007 0.014 0.014 0.044 0.044 0.044 0.044
5,550 - 5,559 under 6 0.010 0.010 0.010 0.010 0.018 0.018 0.018 0.018        
6 to 7 1/2 0.09 0.09 0.009 0.009 0.016 0.016 0.016 0.016        
over 7 1/2 0.018 0.000 0.009 0.009 0.017 0.015 0.016 0.016        
6,000 - 6,499 under 6 0.013 0.013 0.013 0.013 0.023 0.023 0.023 0.023        
6 to 7 1/2 0.010 0.010 0.010 0.010 0.018 0.018 0.018 0.018        
over 7 1/2 0.020 0.000 0.010 0.010 0.020 0.015 0.018 0.018        
6,500 - 6,999 under 6 0.015 0.015 0.015 0.015 0.027 0.027 0.027 0.027        
6 to 7 1/2 0.012 0.012 0.012 0.012 0.021 0.021 0.021 0.021        
over 7 1/2 0.023 0.000 0.012 0.012 0.026 0.015 0.021 0.021        
7,000 - 7,499 under 6 0.018 0.018 0.018 0.018 0.032 0.032 0.032 0.032        
6 to 7 1/2 0.013 0.013 0.013 0.013 0.023 0.023 0.023 0.023        
over 7 1/2 0.026 0.000 0.013 0.013 0.031 0.015 0.023 0.023        
7,500 - 7,999 under 6 0.020 0.020 0.020 0.020 0.035 0.035 0.035 0.035        
6 to 7 1/2 0.015 0.015 0.015 0.015 0.026 0.026 0.026 0.026        
over 7 1/2 0.029 0.000 0.015 0.015 0.036 0.015 0.026 0.026        
8,000 - 8,499 under 6 0.023 0.023 0.023 0.023 0.041 0.041 0.041 0.041        
6 to 7 1/2 0.016 0.016 0.016 0.016 0.028 0.028 0.028 0.028        
over 7 1/2 0.031 0.000 0.015 0.016 0.033 0.022 0.028 0.028        
8,500 - 8,999 under 6 0.025 0.025 0.025 0.025 0.044 0.044 0.044 0.044        
6 to 7 1/2 0.017 0.017 0.017 0.017 0.030 0.030 0.030 0.030        
over 7 1/2 0.034 0.000 0.015 0.019 0.038 0.022 0.030 0.030        
9,000 - 9,499 under 6 0.028 0.028 0.028 0.028 0.045 0.045 0.049 0.049        
6 to 7 1/2 0.019 0.019 0.019 0.019 0.033 0.033 0.033 0.033        
over 7 1/2 0.037 0.000 0.015 0.022 0.043 0.022 0.033 0.033        
9,500 - 9,999 under 6 0.030 0.030 0.030 0.030 0.045 0.045 0.053 0.053        
6 to 7 1/2 0.020 0.020 0.020 0.020 0.035 0.035 0.035 0.035        
over 7 1/2 0.040 0.000 0.015 0.025 0.048 0.022 0.035 0.035        
10,000 - 10,999 under 6 0.034 0.034 0.034 0.034 0.045 0.045 0.060 0.060        
6 to 7 1/2 0.022 0.022 0.022 0.022 0.039 0.039 0.039 0.039        
over 7 1/2 0.044 0.000 0.015 0.029 0.055 0.022 0.039 0.039        
11,000 - 12,000 under 6 0.035 0.035 0.035 0.035 0.050 0.050 0.065 0.065        
6 to 7 1/2 0.025 0.025 0.025 0.025 0.045 0.045 0.045 0.045        
over 7 1/2 0.045 0.000 0.015 0.035 0.060 0.022 0.045 0.045