WELDED HYDRAULIC TUBING
SAE J-526
SCOPE
This specification covers welded, single wall, low carbon steel, flash in tubing intended for general automotive, refrigeration, hydraulic and other similar applications requiring tubing of a quality suitable for bending, flaring, beading, forming and brazing.
TESTING
Tubing produced to this specification will be submitted to the following test procedures according to SAE J1677; Flattening Test, Flaring Test, Expansion Test, Hardness Test, Tensile Test, Pressure Proof Test, Bending Test and a Nondestructive Electronic Test.
TUBING OUTSIDE DIAMETER TOLERANCES | |||
Nominal Tube OD (Inches) | OD Tolerance (+/- Inches) | Wall Thickness (Inches) * | Wall Thickness Tolerance (+/- Inches) |
1/8 | .002 | .025 | .005 |
3/16 | .003 | .028 | .005 |
1/4 | .003 | .028 | .0030 |
5/16 | .003 | .028 | .0030 |
3/8 | .003 | .028 | .0030 |
7/16 | .004 | .030 | .0030 |
1/2 | .004 | .030 | .0030 |
1/2 | .004 | .035 | .0035 |
9/16 | .004 | .030 | .0030 |
5/8 | .004 | .035 | .0035 |
* For intermediate wall thickness, the tolerance for the next heavier wall thickness shall apply.
MECHANICAL PROPERTIES | |
Properties | Values |
Yield Strength (Min) | 25,000 PSI |
Tensile Strength (Min.) | 42,000 PSI |
Elongation in 2” (Min.) | 14% |
Hardness (Rockwell B) (Max) | 65 |