ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing - Properties, Equivalents & Applications
Detailed material data for ASTM A519 Grade 1035 carbon steel seamless tube used in automotive and structural applications, including chemical composition, mechanical and thermal properties, international equivalents, and application guidance.
Cold-drawing, hot-rolling, stress-relieving, annealing, quenching and tempering
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ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Introduction
ASTM A519 Grade 1035 is a medium-carbon steel seamless mechanical tubing specified under ASTM A519 standard. It offers a good balance of strength, toughness, and machinability, making it suitable for automotive, structural, and general engineering components. The material is typically supplied in cold-drawn and stress-relieved condition, providing a fine surface finish and precise dimensional tolerances. Its carbon content (0.32–0.38%) enables heat treatment such as quenching and tempering to enhance mechanical properties.
- Good weldability with appropriate procedures
- Commonly used for shafts, axles, bushings, and hydraulic cylinders
- Available in a range of sizes and wall thicknesses
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Chemical Composition
Chemical composition as per ASTM A519 and ASTM A29 standards. The table lists the main alloying and residual elements for Grade 1035 steel. Iron is the balance. Trace elements not specified are controlled by the standard's residual limits.
| Element | Standard Value | Remarks |
|---|---|---|
| Carbon (C) | 0.32 – 0.38% | Core hardening element |
| Manganese (Mn) | 0.60 – 0.90% | Improves strength and hardenability |
| Phosphorus (P) | ≤ 0.040% | Maximum residual |
| Sulfur (S) | ≤ 0.050% | Maximum residual |
| Silicon (Si) | 0.15 – 0.35% (typical) | Deoxidizer; range may vary by melt practice |
| Iron (Fe) | Balance | Remainder |
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Thermal and Electrical Physical Properties
Physical properties for medium-carbon steel Grade 1035 at ambient temperature unless otherwise noted. These values are generic for steel with ~0.35% carbon content and may vary slightly with processing history.
| Property | Typical Value | Unit | Test Condition |
|---|---|---|---|
| Density (ρ) | 7.85 | g/cm³ | Room temperature |
| Elastic Modulus (E) | 205 | GPa | Room temperature |
| Shear Modulus (G) | 80 | GPa | Room temperature |
| Poisson's Ratio (ν) | 0.29 | - | Room temperature |
| Thermal Expansion (α) | 11.7 | µm/m·K | 20–100°C |
| Thermal Conductivity (λ) | 50 | W/m·K | Room temperature |
| Specific Heat Capacity | 486 | J/kg·K | Room temperature |
| Electrical Resistivity (ρ_e) | 0.142 | µΩ·m | Room temperature |
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Mechanical Properties
Tensile and yield properties are based on ASTM A519 requirements for cold-drawn, stress-relieved condition. Actual values depend on tube size, wall thickness, and heat treatment. Hardness values are typical; the standard does not mandate a hardness range but often references Brinell 170-200 for this grade in normalized condition.
| Property | Standard Requirement | Unit | Test Condition |
|---|---|---|---|
| Tensile Strength (Rm) | ≥ 586 | MPa | Room temperature, stress-relieved |
| Yield Strength (ReH) | ≥ 483 | MPa | Room temperature, 0.2% offset, stress-relieved |
| Elongation (A) | ≥ 10 | % | Gauge length 2 in. or 50 mm, stress-relieved |
| Hardness | 170 – 200 | HB | Typical after normalizing; stress-relieved may differ |
| Tensile Strength (Rm) | ≥ 85 | ksi | Room temperature, stress-relieved |
| Yield Strength (ReH) | ≥ 70 | ksi | Room temperature, 0.2% offset, stress-relieved |
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Complete Equivalent Material Standards and Substitution Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| USA | ASTM A519 | 1035 | Original specification |
| Europe | EN 10083-2 | C35 (1.1178) | Closest chemical equivalent, some differences in mechanical property expectations |
| China | GB/T 699 | 35# | Equivalent carbon structural steel |
| Japan | JIS G4051 | S35C | Similar medium-carbon steel for machine structural use |
| Germany | DIN 17200 | C35 | Legacy standard, now superseded by EN |
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Application Introduction
ASTM A519 Grade 1035 is widely used in manufacturing components that require moderate strength, good machinability, and reliable mechanical properties in the as‑supplied or heat‑treated state. The following are typical application areas and parts:
Product Applications: Seamless mechanical tubing for hydraulic cylinders, Structural frames and roll cages, Drive shafts and propeller shafts, Axle tubes, Machined components such as bushings and sleeves
Processed into products: Piston rods, Cylinder barrels, Couplings, Spacers, Bearing housings, Gear blanks
Application industries: Automotive (drivetrain, suspension, chassis), Construction and structural engineering, Agricultural machinery, Hydraulic and pneumatic systems, General mechanical engineering
ASTM A519 Grade 1035 Carbon Steel Seamless Mechanical Tubing Similar/Alternative Material Recommendations
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| USA | ASTM A519 | 1040 | Higher strength, lower ductility |
| USA | ASTM A519 | 1030 | Lower strength, better weldability and ductility |
| Europe | EN 10083-2 | C40 (1.1186) | Higher carbon alternative |
| Japan | JIS G4051 | S38C | Slightly higher carbon, increased hardenability |
| USA | ASTM A519 | 1025 | Lower carbon, often used where bending and forming are more critical |
Notes:
- A519-1035 can be heat treated (quenched and tempered) to achieve higher hardness and strength for wear-resistant parts.
- Weldability is fair; preheating and post-weld stress relief may be recommended for thicker sections.
- This grade is not intended for pressure applications; use ASTM A106 or A53 for pressure piping.
- Surface finish and dimensional tolerances for cold-drawn tubes are tightly controlled per ASTM A519.
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