USA Piping Solution, as a leading manufacturer and exporter of SAE J526 J2614 welded mechanical steel tubes in the USA, supply to automotive OEM assemblers, Tier 1 brake and fuel line fabricators and refrigerant line manufacturers in North America, Europe and Southeast Asia. We have all OD sizes from 3/16” to 1” in certified mill, and in uncoated, 1 copper coated and 2 copper coated conditions. Fast lead times, full ASTM and SAE documentation, and competitive export pricing make USA Piping Solution the preferred sourcing partner for global buyers seeking SAE J526 tubes and SAE J2614 tubes without the cost premium of North American distributors. Request a Quote today and receive a response within 24 hours.
SAE J526 J2614 Welded Mechanical Steel Tubes Specifications
| Parameter | SAE J526 | SAE J2614 |
|---|---|---|
| Standard | SAE J526 (latest revision) | SAE J2614 (Metric companion to SAE J526) |
| Construction | Electric Resistance Welded (ERW), soft-annealed | Electric Resistance Welded (ERW), soft-annealed |
| Dimensional Basis | Inch (in) | Metric (mm) |
| OD Range | 3/16 in to 1 in (4.76 mm to 25.4 mm) | 4.76 mm to 25.40 mm |
| Wall Thickness | 0.028 in to 0.083 in (0.71 mm to 2.11 mm) per OD schedule | 0.71 mm to 2.11 mm per OD |
| Carbon Max | 0.15% | 0.15% |
| Manganese Max | 0.60% | 0.60% |
| Phosphorus Max | 0.035% | 0.035% |
| Sulphur Max | 0.035% | 0.035% |
| Yield Strength (min) | 26,000 psi / 179 MPa | 179 MPa / 26,000 psi |
| Tensile Strength (min) | 45,000 psi / 310 MPa | 310 MPa / 45,000 psi |
| Elongation (min) | 35% in 2 inches | 35% in 50 mm |
| Delivery Condition | Soft-annealed, fully ductile for bending and flaring | Soft-annealed, braze-ready |
| Copper Coating | Uncoated, single-coat, or double-coat (optional) | Same as SAE J526 |
| Braze Compatibility | Yes (low carbon, annealed) | Yes (identical chemistry) |
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SAE J526 J2614 Welded Mechanical Steel Tubes Applications
The soft-annealed, brazeable properties of SAE J526 tubes and SAE J2614 tubes make them the specified choice for the following automotive and industrial assemblies. For a full range of automotive-grade tubes beyond SAE J-series, see our Automotive Steel Tubes hub.
- Automotive Fuel Lines — Low carbon content enables braze joining, with copper-coated options available for furnace braze assemblies. Typically supplied in OD 1/4 to 5/16 inch with double flare at fittings.
- Automotive Brake Lines — Soft-annealed condition allows tight-radius bending and braze joining at manifold blocks. DOT-compliant brake assemblies specify J526 or J2614 tube as the base material.
- Refrigerant Lines (HVAC/AC) — Compatible with soldered and brazed copper fittings in automotive AC systems. Supplied in OD 3/16 to 1/2 inch for refrigerant circuit routing.
- Chassis Harness Tubes — Used as protective conduit for brake line bundles. Low carbon content ensures clean forming and bending without intermediate annealing or cracking.
- Fuel Injection Sub-assemblies — Precision OD tolerances suit flare and compression fittings. Available in metric dimensions under SAE J2614 for European OEM platform requirements.
Frequently Asked Questions: SAE J526 & SAE J2614 Welded Mechanical Steel Tubes
Q1: SAE J526 vs J525, which standard is correct for brake lines?
SAE J526 is the correct specification for automotive brake line tubing. J526 is soft-annealed, low-carbon, and brazeable, which is required for brake line manifold joining. SAE J525 Tubes are seamless hydraulic tubes rated for high-pressure fluid power. They share similar OD dimensions but are not interchangeable. Always specify J526 for brake line assemblies requiring braze or solder joining.
Q2: Is copper coating standard on SAE J526 tubes?
Copper coating is not a default requirement of the SAE J526 standard. It is an add-on supply condition. Buyers must specify uncoated, single-coat, or double-coat at the time of ordering. Most automotive OEM fuel line assemblies specify single copper-coat as the standard supply condition.
Q3: Are SAE J526 and SAE J2614 the same product?
SAE J526 and SAE J2614 cover identical material chemistry, annealed condition, and braze-compatibility requirements. The only difference is dimensional basis. J526 uses inch dimensions and J2614 uses millimetre dimensions. Both are welded mechanical steel tubes for the same automotive applications. Specify J2614 for metric-dimensioned OEM platforms and J526 for inch-dimensioned platforms.
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