38CrMoALA Steel Structural Pipe Alloy Steel Seamless Pipe For Structural Field
38CrMoALA Steel Structural Pipe: Alloy Steel Seamless Pipe for Structural Field
Material
38CrMoALA is a high-strength alloy steel known for its excellent mechanical properties and resistance to wear and tear. It is primarily used in the manufacturing of seamless pipes for structural applications. This steel grade is characterized by its ability to withstand high pressure and temperature, making it ideal for demanding environments.
Specification
38CrMoALA steel is produced in accordance with stringent industry standards to ensure its quality and performance. The seamless pipes made from this alloy are available in various sizes and thicknesses to meet the specific requirements of different structural applications.
Key Features
- High Strength: Offers superior tensile and yield strength, making it suitable for heavy-duty applications.
- Wear Resistance: Excellent resistance to abrasion and wear, extending the lifespan of the pipes.
- Temperature Resistance: Capable of withstanding high temperatures without losing structural integrity.
- Corrosion Resistance: Provides good resistance to corrosion, ensuring durability in harsh environments.
- Machinability: Easy to machine and fabricate, allowing for versatile applications.
Chemical Composition
The chemical composition of 38CrMoALA steel is crucial in determining its properties. Below is a table presenting the typical chemical composition:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.35 - 0.42 |
| Silicon (Si) | 0.17 - 0.37 |
| Manganese (Mn) | 0.40 - 0.70 |
| Chromium (Cr) | 0.90 - 1.20 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Aluminum (Al) | 0.80 - 1.20 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
Mechanical Properties
The mechanical properties of 38CrMoALA steel are essential for understanding its performance in structural applications. The table below outlines these properties:
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 980 |
| Yield Strength (MPa) | ≥ 835 |
| Elongation (%) | ≥ 12 |
| Impact Energy (J) | ≥ 39 |
| Hardness (HB) | ≤ 269 |
Similar Standards and Steel Grades
38CrMoALA steel is comparable to several international standards and steel grades, including:
- AISI 4140: A chromium-molybdenum alloy steel with similar mechanical properties.
- DIN 1.7220: A German standard equivalent known for its toughness and strength.
- JIS SCM440: A Japanese standard alloy steel with comparable characteristics.
Application
38CrMoALA steel seamless pipes are widely used in various structural fields, including:
- Construction: Ideal for building frameworks, bridges, and other infrastructure projects.
- Automotive: Used in the manufacturing of components that require high strength and durability.
- Machinery: Suitable for heavy machinery parts that undergo significant wear and tear.
- Oil and Gas: Utilized in pipelines and equipment that operate under high pressure and temperature conditions.
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