ASTM A519 Grade 1035 Seamless Mechanical Tubing (UNS G10350)
ASTM A519 Grade 1035 (UNS G10350) seamless mechanical tubing is a medium carbon steel tubing manufactured for applications demanding higher strength, improved hardness, and reliable mechanical performance. The grade offers balanced machinability, enhanced durability, and excellent heat-treatment response, making it ideal for heavy-duty automotive parts, hydraulic systems, machinery components, and precision equipment. Available in hot-finished and cold-drawn conditions, A519 1035 provides excellent dimensional accuracy with superior surface finishing, making it suitable for demanding engineering applications.
Key Features
- Medium carbon steel with high strength and wear resistance
- Excellent machinability and dimensional precision
- Suitable for heat treatment: quenching, tempering, and normalizing
- High-quality seamless construction for superior integrity
- Ideal for high-load mechanical and hydraulic applications
- Available in HFS and CDS conditions
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | G10350 |
| SAE | 1035 |
| AISI | 1035 |
| JIS | S35C |
| EN | C35E / C35R |
Available Sizes
- OD: 10 mm to 323.9 mm
- Wall Thickness: 1 mm to 40 mm
- Lengths: 4–7 m (SRL), 7–13 m (DRL), custom lengths
ASTM A519 1035 Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.32 – 0.38 |
| Manganese (Mn) | 0.60 – 0.90 |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.050 max |
| Silicon (Si) | 0.15 – 0.35 |
| Iron (Fe) | Balance |
ASTM A519 1035 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 540 – 690 MPa |
| Yield Strength | 305 MPa (min) |
| Elongation | 18% (min) |
| Hardness | 140 – 201 HB |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Elastic Modulus | 200 GPa |
| Poisson’s Ratio | 0.29 |
| Thermal Conductivity | 51 W/m·K |
| Melting Point | ~1500–1520°C |
Type of 1035 Tubes
- Seamless Mechanical Tubing
- Cold Drawn Seamless (CDS) Tubing
- Hot Finished Seamless (HFS) Tubing
- DOM Tubing
- Annealed Tubes
- Normalized Tubes
- Quenched & Tempered Tubes
- Carburizing Quality Tubing
- Precision Cut-to-Length Tubes
Applications
- Automotive components (gears, shafts, axles)
- Hydraulic cylinder barrels
- High-strength machinery parts
- Forged components
- Bushings and sleeves
- Heavy-duty mechanical equipment
- Structural and precision engineering components
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