WELDED HYDRAULIC TUBING SAE J356

USA Piping Solution is a trusted manufacturer and supplier of SAE J356 Tubes in USA, engineered for high-performance hydraulic and pressure line applications. SAE J356 tubing is electric resistance welded (ERW), flash-controlled, normalized, and manufactured from low carbon steel to provide excellent strength, ductility, and dimensional accuracy in demanding operating conditions.

We manufacture precision-engineered SAE J356 welded hydraulic tubing with tight dimensional tolerances to meet automotive, industrial, and hydraulic system requirements.

SAE J356 welded hydraulic tubes are specifically designed for pressure lines and applications requiring bending, double flaring, beading, forming, and brazing. Due to controlled internal weld bead characteristics, this material is not recommended for single-flare applications.

SAE J356 tubing is a flash-controlled, normalized ERW low carbon steel tube widely used in hydraulic systems and pressure lines. It is commonly utilized in automotive components, industrial machinery, agricultural equipment, and fluid transfer systems where structural reliability and dimensional precision are critical.

Chemical Composition for SAE J356 Steel Tubes

Element	J356 (Weight %)	J356 Type-A (Weight %)
Carbon	0.06 Min / 0.18 Max	0.02 Min / 0.18 Max
Manganese	0.30 Min / 0.60 Max	0.10 Min / 0.60 Max
Phosphorus	0.04 Max	0.04 Max
Sulfur	0.06 Max	0.05 Max

Mechanical Properties of SAE J356 Tubing

Property	Value
Yield Strength (Min)	25,000 PSI
Tensile Strength (Min)	45,000 PSI
Elongation in 2" (Min)	35% [a]
Hardness (Rockwell B) (Max)	65 [b]

Notes:

• [a] For tubing with a nominal OD of 3/8” or less and/or a wall thickness of .035” or less, a minimum elongation of 25% is permissible.

• [b] Hardness testing is not required for tubing with a nominal wall thickness of less than .065” (16 Ga).

SAE J356 Testing Procedures and Quality Control

All tubing produced to this specification must be submitted to the following test procedures in accordance with SAE J1677:

• Flattening Test
• Flaring Test
• Reverse Flattening Test
• Expansion Test
• Hardness Test
• Tensile Test
• Pressure Proof Test
• Nondestructive Electronic Test

These tests ensure that SAE J356 tubing meets mechanical performance, structural integrity, and pressure resistance requirements.

Inside Flash Height Tolerances for SAE J356 Tubing

The inside weld flash is strictly managed through specialized welding techniques or precision cutting.

Nominal Wall Thickness (Inches)	Max Flash Height: Up to 1" OD (Inches)	Max Flash Height: Over 1" OD (Inches)
Less than .035	.005	.010
.035 through .065	.008	.010
Greater than .065	.010	.010

SAE J356 Tubing Outside Diameter (OD) Tolerances

Nominal Tube OD (Inches)	OD Tolerance (± Inches)
Up to 3/8 (0.375)	.0025
Over 3/8 to 5/8 (0.625)	.003
Over 5/8 to 1-1/8 (1.125)	.0035
Over 1-1/8 to 2	.005
Over 2 to 2-1/2	.006
Over 2-1/2 to 3	.008
Over 3 to 3-1/2	.009
Over 3-1/2 to 4	.010

SAE J356 Tubing Wall Thickness Tolerances

Related Hydraulic and Mechanical Tubing

• SAE J524 Seamless Hydraulic Tubing
• SAE J525 Welded Hydraulic Tubing
• ASTM A519 Seamless Mechanical Tubing
• Drawn Over Mandrel (DOM) Tubing (ASTM A513 Type 5)

Request Your SAE J356 Tubing Quote Today!