34CrNiMo6 High Strength Steel Tube Alloy Structural Seamless Steel Pipe
34CrNiMo6 High Strength Steel Tube: Alloy Structural Seamless Steel Pipe
Material Specification
34CrNiMo6 is a high-strength alloy steel known for its excellent toughness, ductility, and wear resistance. It is commonly used in the manufacturing of seamless steel pipes, which are essential in various industrial applications due to their ability to withstand high pressure and temperature.
Key Features
- High Strength: Offers superior tensile and yield strength, making it suitable for demanding applications.
- Excellent Toughness: Maintains toughness even at low temperatures.
- Good Ductility: Allows for easy forming and machining.
- Wear Resistance: Provides durability in abrasive environments.
- Heat Treatable: Can be heat treated to enhance mechanical properties.
Chemical Composition
The chemical composition of 34CrNiMo6 is crucial for its performance characteristics. Below is a table detailing its composition:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.30 - 0.38 |
| Silicon (Si) | 0.10 - 0.40 |
| Manganese (Mn) | 0.50 - 0.80 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 1.30 - 1.70 |
| Nickel (Ni) | 1.25 - 1.65 |
| Molybdenum (Mo) | 0.15 - 0.30 |
Mechanical Properties
The mechanical properties of 34CrNiMo6 steel are essential for its application in high-stress environments. The table below summarizes these properties:
| Property | Value |
|---|---|
| Tensile Strength | 900 - 1100 MPa |
| Yield Strength | ≥ 700 MPa |
| Elongation | ≥ 12% |
| Impact Energy (Charpy V-notch) | ≥ 35 J at -20°C |
Similar Standards and Steel Grades
34CrNiMo6 is equivalent to several international standards and steel grades, making it versatile for global applications. Here are some of the comparable standards:
- ASTM: AISI 4340
- EN: 34CrNiMo6
- GOST: 36KhN3M
- JIS: SNCM439
- GB: 40CrNiMoA
Application
34CrNiMo6 seamless steel pipes are widely used in industries requiring high strength and toughness. Common applications include:
- Automotive: Components such as crankshafts, gears, and axles.
- Aerospace: Structural parts and landing gear.
- Oil and Gas: Drill collars and downhole tools.
- Engineering: Heavy machinery and equipment parts.
- Defense: Armored vehicles and weapon systems.
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