SAE J525 Thick Wall Mild Steel Hydraulic Tube for Precision Instruments and Industrial Machinery
Product Details
SAE J525 Hydraulic Tube
,Thick Wall Precision Steel Tube
,Mild Steel Alloy Hydraulic Tube
SAE J525 Thick Wall Mild Steel Tube – Alloy Hydraulic Tube for Precision Instruments
Material
SAE J525 tubing is manufactured from high-quality mild carbon steel, processed by electric resistance welding and then fully normalized to achieve uniform grain structure and excellent ductility. It is specifically designed as a hydraulic tube with thick walls to handle pressure applications while ensuring precision and safety.
Specifications
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Standard: SAE J525
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Manufacturing Process: Electric Resistance Welded (ERW), Normalized
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Wall Thickness: Thick wall, per SAE J525 requirements
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Shape: Round tube
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Finish: Smooth, suitable for bending and flaring
Chemical Composition (Typical, wt%)
| Grade | C (%) | Mn (%) | P (%) | S (%) | Fe (%) |
|---|---|---|---|---|---|
| SAE J525 | ≤0.18 | 0.30–0.60 | ≤0.035 | ≤0.035 | Balance |
| ASTM A179 | ≤0.06 | 0.27–0.63 | ≤0.035 | ≤0.035 | Balance |
| ASTM A513 Type 5 (1020) | 0.18–0.23 | 0.30–0.60 | ≤0.040 | ≤0.050 | Balance |
| EN 10305-4 E235 | ≤0.17 | ≤1.20 | ≤0.025 | ≤0.025 | Balance |
| JIS STKM11A | ≤0.15 | 0.30–0.60 | ≤0.030 | ≤0.030 | Balance |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
|---|---|---|---|---|
| SAE J525 | 290–430 | ≥180 | ≥35 | ≤72 |
| ASTM A179 | ≥325 | ≥180 | ≥35 | ≤72 |
| ASTM A513 Type 5 (1020) | 350–450 | ≥210 | ≥25 | ≤85 |
| EN 10305-4 E235 | 340–480 | ≥235 | ≥25 | ≤80 |
| JIS STKM11A | ≥290 | ≥180 | ≥30 | ≤72 |
Key Features
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Excellent formability, bendability, and flare capability
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Uniform grain structure due to full normalization
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High dimensional accuracy and smooth internal surface
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Reliable for hydraulic systems under pressure
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Enhanced safety in precision instruments applications
Applicable Standards
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SAE J525 (North America)
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ASTM A179 / ASTM A513 (USA equivalent options)
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EN 10305-4 (European equivalent)
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JIS G3445 STKM series (Japanese equivalent)
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GB/T 3639 (Chinese equivalent for precision tubes)
Applications
SAE J525 tubes are primarily used in hydraulic and pneumatic systems where safety and precision are critical.
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Automotive Industry: Brake lines, fuel lines, hydraulic power steering systems
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Industrial Machinery: Hydraulic cylinders, fluid power systems, lubrication lines
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Precision Instruments: Measuring and control systems requiring high reliability
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Construction Equipment: Hydraulic lines for excavators, loaders, and cranes
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Aerospace & Marine: Specialized hydraulic control systems
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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