ASTM A519 Grade 1010 Seamless Mechanical Tubing
ASTM A519 Grade 1010 Seamless Mechanical Tubing | Carbon Steel Pipe Properties
Explore ASTM A519 Grade 1010 seamless carbon steel mechanical tubing for automotive and structural applications. Includes chemical composition, mechanical properties, thermal/electrical data, and international equivalents.
Cold drawing, cold rolling, hot finishing, machining, welding, bending, forming, stress relieving
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ASTM A519 Grade 1010 Seamless Mechanical Tubing Introduction
ASTM A519 Grade 1010 is a low-carbon steel designed for seamless mechanical tubing. It provides an excellent combination of moderate strength, high ductility, and superior weldability. Typically supplied in the cold-worked (CW) or cold-worked and stress-relieved (SR) condition, it is extensively used in automotive structures, general machinery, and structural frameworks where forming and joining are critical. The material meets a minimum tensile strength of 310 MPa and a 205 MPa yield strength with elongation above 20%, ensuring reliable performance in dynamic and static applications.
ASTM A519 Grade 1010 Seamless Mechanical Tubing Chemical Composition
The chemical composition of ASTM A519 Grade 1010 is defined by the ASTM A519 standard. Limits are set to ensure consistent formability and weldability. Residual elements like phosphorus and sulfur are controlled to maintain ductility.
| Element | Specification Value (%) | Remarks |
|---|---|---|
| Carbon (C) | 0.08 – 0.13 | |
| Manganese (Mn) | 0.30 – 0.60 | |
| Phosphorus (P) | ≤ 0.040 | |
| Sulfur (S) | ≤ 0.050 |
ASTM A519 Grade 1010 Seamless Mechanical Tubing Thermal and Electrical Physical Properties
The following physical properties are typical for a low-carbon steel equivalent to Grade 1010 at room temperature, unless otherwise noted. Values are approximate and may shift slightly with composition and processing. Thermal conductivity decreases with increasing temperature.
| Property | Typical Value | Unit | Test Condition / Temperature |
|---|---|---|---|
| Density (ρ) | 7.87 | g/cm³ | Room temperature |
| Modulus of Elasticity (E) | 205 | GPa | Room temperature |
| Shear Modulus (G) | 80 | GPa | Room temperature |
| Poisson's Ratio (ν) | 0.29 | — | Room temperature |
| Thermal Expansion Coefficient (α) | 12.2 | 10⁻⁶ /K | 20 °C to 100 °C |
| Thermal Conductivity (λ) | 51.9 | W/(m·K) | At 100 °C |
| Specific Heat Capacity | 486 | J/(kg·K) | At 100 °C |
| Electrical Resistivity (ρₑ) | 0.142 | μΩ·m | At 20 °C |
ASTM A519 Grade 1010 Seamless Mechanical Tubing Mechanical Properties
Mechanical properties vary with heat treatment and wall thickness. The values below are the minimum requirements for cold-worked (CW) tubing with wall thickness ≤ 19.05 mm (0.75 in) as per ASTM A519. For other conditions (SR, HF, N) or larger thicknesses, consult the standard.
| Property | Minimum Requirement | Unit | Condition |
|---|---|---|---|
| Tensile Strength (Rm) | 310 | MPa | Cold-Worked (CW) |
| Yield Strength (ReH / Rp0.2) | 205 | MPa | Cold-Worked (CW) |
| Elongation (A) in 50 mm (2 in.) | 20 | % | Cold-Worked (CW), wall ≤ 19.05 mm |
| Hardness, Rockwell B (HRB) | ≤ 80 | — | Typical for CW condition |
ASTM A519 Grade 1010 Seamless Mechanical Tubing Fully Equivalent Material Standards and Replaceable Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10305-1 | E235 | Seamless cold-drawn precision steel tubes; comparable strength range and chemical limits |
| Japan | JIS G3445 | STKM11A | Carbon steel tubes for machine structures; equivalent application and similar mechanical values |
| International | ISO 2938 | E235 | Seamless steel tubes for mechanical purposes; aligned with EN grade |
ASTM A519 Grade 1010 Seamless Mechanical Tubing Application Introduction
ASTM A519 Grade 1010 seamless tubing is well-suited for a wide range of industries and products that demand a balance of strength, formability, and cost efficiency. Key sectors and applications include:
Product Applications: Vehicle frame and chassis members, Hydraulic cylinder tubes (low/medium pressure), Bushings, spacers, and bearing housings, Drive shafts, axle tubes, and steering columns, Furniture frames, handrails, and conveyor rollers
Processed into products: Suspension control arms and stabilizer bars, Roll cage tubes and side-impact beams, Pivot pins, sleeves, and gear-shift rails, Steering column jackets and telescopic tubes, Conveyor idler rollers and structural supports
Application industries: Automotive and transportation, Construction and structural engineering, General machinery manufacturing, Hydraulic and pneumatic systems, Agricultural and off-highway equipment
ASTM A519 Grade 1010 Seamless Mechanical Tubing Similar / Alternative Material Recommendations
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| United States | ASTM A519 | 1020 | Higher carbon and manganese provide greater strength while retaining good weldability |
| Europe | EN 10305-1 | E275 | Higher yield strength grade for more demanding structural applications |
| Japan | JIS G3445 | STKM12A | Similar to 1015–1020 range, offering increased strength with slightly reduced ductility |
Notes:
Note: Mechanical properties are based on the cold-worked (CW) condition. For critical parts, the actual delivery condition should be verified with the material test certificate. ASTM A519 also allows additional tests such as flattening, flaring, hardness, and nondestructive inspection as agreed. This grade is not intended for pressure vessel or high-temperature service unless specifically qualified.
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