ASTM A519 1015 (UNS G10150) Mechanical Tubing
ASTM A519 Grade 1015 (UNS G10150) is a mild carbon steel designed for seamless mechanical tubing used in precision engineering, automotive manufacturing, industrial machinery, and hydraulic systems. With a slightly higher carbon content than Grades 1008 and 1010, ASTM A519 1015 provides improved mechanical strength while maintaining excellent ductility, weldability, and machinability. It is manufactured through hot-finished or cold-drawn processes, ensuring a smooth internal surface, tighter tolerances, and consistent performance in demanding applications.
This grade is particularly suitable for components requiring moderate strength with excellent forming characteristics, such as shafts, bushings, rollers, tubing for hydraulic cylinders, and general mechanical parts. The UNS G10150 designation ensures global standardization and ease of traceability, making ASTM A519 1015 a preferred choice across international engineering and industrial sectors.
ASTM A519 Grade 1015 is valued for its combination of strength, toughness, and ease of fabrication. It can be bent, flared, swaged, drawn, or machined to tight tolerances based on project requirements. The seamless nature of A519 tubing ensures superior structural integrity, making it ideal for applications where reliability under pressure, torsion, or vibration is essential.
Key Features
- Seamless construction with superior mechanical reliability
- Good balance of strength and ductility
- Excellent weldability and machinability
- Smooth internal surfaces for hydraulic & precision applications
- Well-suited for bending, forming, and cold-working
- Higher strength compared to A519 Grades 1008 & 1010
Equivalent Grades
| Standard | Equivalent |
|---|---|
| UNS | G10150 |
| SAE/AISI | 1015 |
| EN/DIN | 1.0304 / C15 (Approx. Equivalent) |
| JIS | S15C |
ASTM A519 1015 Chemical Composition
| Element | % |
|---|---|
| Carbon (C) | 0.13 – 0.18 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Silicon (Si) | ≤ 0.10 |
ASTM A519 1015 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 350–490 MPa |
| Yield Strength | 210–260 MPa |
| Elongation | 25–30% |
| Hardness | 80–95 HRB |
Available Sizes
Outside Diameter (OD) Range
- 12.7 mm (½”) to 323.8 mm (12¾”)
- Custom OD sizes available for special mechanical applications
Wall Thickness (WT) Range
- 1.5 mm to 50 mm
- Thin-wall precision tubes available
- Heavy-wall & extra-heavy wall tubing offered for structural and hydraulic applications
Standard Lengths
- 6 meters (Standard Mill Length)
- 12 meters (Long Length)
- Custom cut-to-length as per customer requirement
Dimensional Tolerances
- OD Tolerance: ±0.5% (Cold-drawn tubes can be supplied with tighter tolerances)
- WT Tolerance: ±10% or as specified
- Length Tolerance: +5 / -0 mm for cut lengths
Types Available
- Seamless Mechanical Tubes
- Cold Drawn Precision Tubes
- Hydraulic Cylinder Tubes
- Hot Finished Tubes
- Structural Mechanical Tubes
Applications
- Automotive components & engine parts
- Hydraulic & pneumatic cylinders
- Shafts, axles, bushings, spindles
- Conveyor rollers & machinery parts
- Fabricated industrial structures
- Precision mechanical engineering components
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