ASTM A513 Grade 1020
ASTM A513 1020 is a widely used carbon steel mechanical tubing grade produced by the Electric Resistance Welded (ERW) process. Known for its excellent strength, machinability, and weldability, this grade is commonly used in automotive, industrial machinery, hydraulic cylinders, structural components, and general engineering applications.
With its medium-low carbon content, ASTM A513 1020 provides an ideal balance between ductility and strength, making it suitable for forming, bending, machining, and fabrication processes.
Key Features
- Medium-Low Carbon Steel: Offers improved strength over low-carbon grades while maintaining good ductility.
- High Machinability: Suitable for drilling, turning, milling, threading & machining operations.
- Excellent Weldability: Compatible with MIG, TIG, and resistance welding techniques.
- Dimensional Accuracy: ERW production ensures precise tolerances and uniformity.
- Superior Surface Finish: Suitable for powder-coating, galvanizing, painting & plating.
- Versatile Application Range: Used across automotive, structural, mechanical & industrial sectors.
Specifications
| Specification |
Details |
| Standard |
ASTM A513 |
| Grade |
1020 |
| Manufacturing Method |
ERW – Electric Resistance Welded |
| Product Category |
Mechanical Steel Tubing |
| Forms |
Round, Square, Rectangular, DOM |
| Surface Finish |
Bright, Clean, Oiled, Pickled, Galvanized |
| Tolerances |
As per ASTM A513 |
| Heat Treatment |
Normalized, Annealed, Stress-Relieved, As-Welded |
Equivalent Grades
| Standard |
Equivalent Grade |
| UNS |
G10200 |
| AISI/SAE |
1020 |
| EN |
C22 / C22E |
| JIS |
S20C |
| ISO |
C22 |
Available Sizes
Round Mechanical Tubing
- OD: 10 mm – 273 mm
- Wall Thickness: 1.0 mm – 12.7 mm
- Length: Up to 12 meters
Square Tubes
- Size Range: 12×12 mm – 250×250 mm
- Thickness: 1.0 mm – 10 mm
Rectangular Tubes
- Size Range: 20×10 mm – 300×200 mm
- Thickness: 1.0 mm – 10 mm
DOM (Drawn Over Mandrel) Tubes
- OD: 6 mm – 150 mm
- Wall Thickness: 0.8 mm – 6 mm
Custom Options
- Special lengths, tighter tolerances, and custom shapes available upon request.
Chemical Composition (%)
| Element |
Content (%) |
| Carbon (C) |
0.18 – 0.23 |
| Manganese (Mn) |
0.30 – 0.60 |
| Phosphorus (P) |
0.040 max |
| Sulfur (S) |
0.050 max |
| Iron (Fe) |
Balance |
Mechanical Properties
| Property |
Typical Value |
| Tensile Strength |
420 – 550 MPa |
| Yield Strength |
250 – 350 MPa |
| Elongation |
20 – 30% |
| Hardness |
HRB 85–100 |
| Modulus of Elasticity |
200 GPa |
Physical Properties
| Property |
Value |
| Density |
7.85 g/cm³ |
| Melting Point |
1450–1520 °C |
| Thermal Conductivity |
51 W/m·K |
| Electrical Resistivity |
0.15 µΩ·m |
| Poisson’s Ratio |
0.29 |
| Specific Heat Capacity |
486 J/kg·K |
Types of ASTM A513 1020 Tubing
- Type 1: Hot Rolled Steel Tubing
- Type 2: Cold Rolled Steel Tubing
- Type 3: As-Welded Tubing
- Type 4: Stress-Relieved Tubing
- Type 5: Drawn Over Mandrel (DOM) Tubing
- Type 6: DOM + Stress Relieved
Applications
- Automotive Parts (shafts, supports, chassis components)
- Hydraulic & Pneumatic Cylinder Tubes
- Agricultural Equipment
- Industrial Machinery & Fabrication
- Furniture Structures & Metal Frames
- Roll-Formed Components
- Construction & Infrastructure
- Mechanical & Structural Tubing
- Exercise Equipment
- General Engineering Applications
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