A513 T1 HR ERW
A513-Type 1a This specification covers “as welded” electric-resistance-welded carbon and alloy steel tubing made from hot-rolled steel (with mill scale) for use as mechanical tubing. This specification covers round, square, rectangular, and special shape tubing.
| Grade Designation | Carbon | Manganese | Phosphorus, max. | Sulfur, max. |
|---|---|---|---|---|
| 1008 | 0.10 max. | 0.50 max. | 0.035 | 0.035 |
| 1010 | 0.08 – 0.13 | 0.30 – 0.60 | 0.035 | 0.035 |
| 1015 | 0.13 – 0.18 | 0.30 – 0.60 | 0.035 | 0.035 |
| 1020 | 0.18 – 0.23 | 0.30 – 0.60 | 0.035 | 0.035 |
| Hardness Limits and Tensile Properties for Round Tubing | Yield Strength, ksi (Mpa), min. | Ultimate Strength, ksi (Mpa), min. | Elongation in 2 in. or 50 mm, %, min. | RB min. |
|---|---|---|---|---|
| Grade Designation | ||||
| 1008 | 30 (207) | 42 (290) | 15 | 50 |
| 1010 | 32 (221) | 45 (310) | 15 | 55 |
| 1015 | 35 (241) | 48 (331) | 15 | 58 |
| 1020 | 38 (262) | 52 (359) | 12 | 62 |
| Wall Thickness (inches) {Birmingham Wire Gage} | .750 to 1.000 inclusive | Over 1.000 inch to 1.313 inch, Inclusive | Over 1.313 inch to 3.750 inch, Inclusive | Over 3.750 inch to 4.500 inch, Inclusive | Over 4.500 inch to 8.000 inch, Inclusive | Over 8.000 inch to 10.000 inch, Inclusive | Over 10.000 inch to 15.000 inch, Inclusive |
|---|---|---|---|---|---|---|---|
| 0.065 {16} | + 0.005 / – 0.009 | + 0.004 / – 0.010 | + 0.003 / – 0.011 | + 0.002 / – 0.012 | + 0.002 / – 0.012 | …… | …… |
| 0.072 {15} | + 0.005 / – 0.009 | + 0.004 / – 0.010 | + 0.003 / – 0.011 | + 0.002 / – 0.012 | + 0.002 / – 0.012 | + 0.003 / – 0.013 | …… |
| 0.083 {14} | + 0.006 / – 0.010 | + 0.005 / – 0.011 | + 0.004 / – 0.012 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 |
| 0.095 {13} | + 0.006 / – 0.010 | + 0.005 / – 0.011 | + 0.004 / – 0.012 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 |
| 0.109 {12} | + 0.006 / – 0.010 | + 0.005 / – 0.011 | + 0.004 / – 0.012 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 |
| 0.120 {11} | + 0.006 / – 0.010 | + 0.005 / – 0.011 | + 0.004 / – 0.012 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 |
| 0.134 {10} | + 0.006 / – 0.010 | + 0.005 / – 0.011 | + 0.004 / – 0.012 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 | + 0.003 / – 0.013 |
| 0.148 {9} | + 0.006 / – 0.012 | + 0.005 / – 0.013 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | |
| 0.165 {8} | + 0.006 / – 0.012 | + 0.005 / – 0.013 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | |
| 0.180 {7} | + 0.006 / – 0.012 | + 0.005 / – 0.013 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | + 0.004 / – 0.014 | |
| 0.203 {6} | + 0.007 / – 0.015 | + 0.006 / – 0.016 | + 0.005 / – 0.017 | + 0.005 / – 0.017 | + 0.005 / – 0.017 | ||
| 0.220 {5} | + 0.007 / – 0.015 | + 0.006 / – 0.016 | + 0.005 / – 0.017 | + 0.005 / – 0.017 | + 0.005 / – 0.017 | ||
| 0.238 {4} | + 0.012 / – 0.020 | + 0.011 / – 0.021 | + 0.010 / – 0.022 | + 0.010 / – 0.022 | + 0.010 / – 0.022 | ||
| 0.259 {3} | + 0.013 / – 0.021 | + 0.012 / – 0.022 | + 0.011 / – 0.023 | + 0.011 / – 0.023 | + 0.011 / – 0.023 | ||
| 0.284 {2} | + 0.014 / – 0.022 | + 0.013 / – 0.023 | + 0.012 / – 0.024 | + 0.012 / – 0.024 | + 0.012 / – 0.024 | ||
| 0.300 {1} | + 0.015 / – 0.023 | + 0.014 / – 0.024 | + 0.013 / – 0.025 | + 0.013 / – 0.025 | + 0.013 / – 0.025 | ||
| 0.320 | + 0.016 / -0.024 | + 0.015 / – 0.025 | + 0.014 / – 0.026 | + 0.014 / – 0.026 | + 0.014 / – 0.026 | ||
| 0.344 | + 0.017 / – 0.025 | + 0.016 / – 0.026 | + 0.015 / – 0.027 | + 0.015 / – 0.027 | + 0.015 / – 0.027 | ||
| 0.360 | + 0.017 / – 0.025 | + 0.016 / – 0.026 | + 0.015 / – 0.027 | + 0.015 / – 0.027 | + 0.015 / – 0.027 | ||
| 0.375 | + 0.016 / – 0.026 | + 0.015 / – 0.027 | + 0.015 / – 0.027 | + 0.015 / – 0.027 | |||
| 0.406 | + 0.017 / – 0.027 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | |||
| 0.438 | + 0.017 / – 0.027 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | |||
| 0.469 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | ||||
| 0.500 | + 0.016 / – 0.028 | + 0.016 / – 0.028 | + 0.016 / – 0.028 |
| Wall Thickness | Flash-in-Tubing | Flash Controlled to 0.010 inch max. Tubing | |
|---|---|---|---|
| Outside Diameter Range, inches | inches | Outside Diameter Tolerance +/- (inches) | Outside Diameter Tolerance +/- (inches) |
| .500 to 1.125, inclusive | 0.065 to 0.134 | 0.0035 | 0.0035 |
| Over 1.125 to 2.000 inclusive | 0.065 to 0.259 | 0.005 | 0.005 |
| Over 2.000 to 2.500 inclusive | 0.065 to 0.259 | 0.005 | 0.005 |
| Over 2.500 to 3.000 inclusive | 0.065 to 0.259 | 0.008 | 0.008 |
| Over 2.500 to 3.000 inclusive | 0.284 to 0.320 | 0.010 | 0.010 |
| Over 3.000 to 3.500 inclusive | 0.065 to 0.259 | 0.009 | 0.009 |
| Over 3.000 to 3.500 inclusive | 0.284 to 0.360 | 0.012 | 0.012 |
| Over 3.500 to 4.000 inclusive | 0.065 to 0.259 | 0.010 | 0.010 |
| Over 3.500 to 4.000 inclusive | 0.284 to 0.500 | 0.015 | 0.015 |
| Over 4.000 to 5.000 inclusive | 0.065 to 0.500 | 0.020 | 0.020 |
| Over 5.000 to 6.000 inclusive | 0.065 to 0.500 | 0.020 | 0.020 |
| Over 6.000 to 8.000 inclusive | 0.120 to 0.500 | 0.025 | 0.025 |
| Over 8.000 to 10.000 inclusive | 0.083 to 0.500 | 0.030 | 0.030 |
| Over 10.000 to 12.000 inclusive | 0.083 to 0.500 | 0.035 | 0.035 |
| Over 12.000 to 15.000 inclusive | 0.083 to 0.500 | 0.040 | 0.040 |
Flash-in-Tubing is produced only to outside diameter tolerances and wall thickness tolerances and the outside diameter welding flash does not exceed the wall thickness or .094 inch, whichever is less.
Flash controlled to 0.010 inch maximum tubing consists of tubing which is commonly produced only to outside diameter tolerances and wall thickness tolerances, in which the height of the remaining flash is controlled not to exceed 0.010 inch.
Straightness – The straightness tolerance for round tubing is 0.030 in./ 3 ft (0.76 mm/1 m) lengths to 8.000 in. (203 mm) outside diameter. For 8.000 in. outside diameter and above, straightness tolerance is 0.060 in./3 ft (1.52 mm/1 m) lengths.
Ovality – The ovality shall be within the tolerances except when the wall thickness is less than 3 % of the outside diameter. In such cases the ovality may be 50 % greater than the outside tolerances but the mean outside diameter shall be within the specified tolerance.
| Largest Nominal Outside Dimension, inches | Wall Thicknes, inches | Outside Tolerance at All Sides at Corners +/- inches |
|---|---|---|
| .188 to .625, inclusive | 0.020 to 0.083, inclusive | 0.004 |
| Over .625 to 1.125, Inclusive | 0.022 to 0.156, inclusive | 0.005 |
| Over 1.125 to 1.500, Inclusive | 0.025 to 0.192, inclusive | 0.006 |
| Over 1.500 to 2.000, Inclusive | 0.032 to 0.192, inclusive | 0.008 |
| Over 2.000 to 3.000, Inclusive | 0.035 to 0.259, inclusive | 0.01 |
| Over 3.000 to 4.000, Inclusive | 0.049 to 0.259, inclusive | 0.02 |
| Over 4.000 to 6.000, Inclusive | 0.065 to 0.259, inclusive | 0.02 |
| Over 6.000 to 8.000, Inclusive | 0.185 to 0.259, inclusive | 0.025 |
* Measured at corners at least 2 inches from the end of the tubing.
Convexity and concavity: Tubes having two parrelel sides are measured in the center of the flat sides for convexity and concavity. This tolerance applies to the specific size determined at the corners, and is measured on the following basis:
| Largest Nominal Outside Dimension, inches | Tolerance +/-, inches |
|---|---|
| 2.500 and under | 0.010 |
| Over 2.500 to 4.000 | 0.015 |
| Over 4.000 to 8.000 | 0.025 |
Information provided is “Typical” for specific requirements please inquire.