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.
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TUBING OUTSIDE DIAMETER TOLERANCES
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Nominal Tube OD
(Inches) |
OD Tolerance
(+/- Inches) |
Wall Thickness
(Inches) * |
Wall Thickness
Tolerance (+/- Inches) |
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1/8
|
.002
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.025
|
.005
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3/16
|
.003
|
.028
|
.005
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1/4
|
.003
|
.028
|
.0030
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5/16
|
.003
|
.028
|
.0030
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3/8
|
.003
|
.028
|
.0030
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7/16
|
.004
|
.030
|
.0030
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1/2
|
.004
|
.030
|
.0030
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1/2
|
.004
|
.035
|
.0035
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9/16
|
.004
|
.030
|
.0030
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5/8
|
.004
|
.035
|
.0035
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* For intermediate wall thickness, the tolerance for the next heavier wall thickness shall apply.
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MECHANICAL PROPERTIES
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Properties
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Values
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Yield Strength (Min)
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25,000 PSI
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Tensile Strength (Min.)
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42,000 PSI
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Elongation in 2” (Min.)
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14%
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Hardness (Rockwell B) (Max)
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65
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