SAE J524 Seamless Steel Tubing

Main Features: high accuracy, excellent brightness, no oxidization on the outer and inner walls after heat treatment, high cleanness inside wall. The steel tube is able to stand high pressure. No deformation after cold bending, no crack after flaring and flattening . The complicated geometrical forming and machining can be realized.
Main Application: to be used in hydraulic system, automobile and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.

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1.Production of  SAE J524 series seamless high precision tubes since 2005.

2. Working with customers from Europe,West Asia,South America,etc since 2006.

3.  Samples can be delivered within 25 days after confirmation

4.  40 days as the production period and delivery after order confirmation.

5.  150,000 meters of seamless steel tubes in stock.

6.  200 sizes can be offered from OD:4mmxWT:0.5mm to OD:90mmxWT:10mm

7.  Third party inspection like:TUV,BV,SGS,etc accepted

8.  Professional team assists your special tube requirements.

9.  Other related tubes can be offered with competitive prices: DIN2391,EN10305-1/4 seamless steel tubes,EN10305-2/3 welded steel tube;etc

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The tolerances applicable to tubing outside diameter are shown as follows. The wall thickness shall not vary more than ±10% for tubing having 12.7 mm or larger,nominal inside diameter no more than ±15% for tubing having a smaller nominal inside diameter. Tubing outside diameter and wall thickness shall be as specified by purchaser.

OD Up to 25.4mm  OD Tolerance±0.10mm

Over 25.4 to 38.1 inclusive OD Tolerance±0.15mm

Over 38.1 to 50.8 inclusive OD Tolerance±0.20mm

Over 50.8 to 88.9 inclusive OD Tolerance±0.25mm


CHEMICAL REQUIREMENTS Cast or Heat Analysis  Element % by Weight

Carbon       Manganese      Phosphorus      Sulfur

0.18 max   0.30 to 0.60     0.040 max     0.050 max



Yield Strength≥170 MPa, Ultimate Strength, ≥310 MPa, Elongation in 50 mm, ≥35%  Hardness (Rockwell B)≤ 65

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