GJB 1951 38Cra Structural Steel Pipe High-Quality Structural Steel Bars Seamless pipe For aviation
GJB 1951 38Cra 15CrA 20CrA 10A 45A Structural Steel Pipe: High-Quality Structural Steel Bars & Seamless Pipe for Aviation
Material Specification
GJB 1951 38Cra 15CrA 20CrA 10A 45A structural steel is a high-quality material designed for demanding applications, particularly in the aviation industry. This steel is known for its excellent mechanical properties, durability, and resistance to environmental stressors, making it ideal for manufacturing structural components and seamless pipes.
Key Features
- High Strength: Offers superior tensile and yield strength.
- Durability: Resistant to wear and tear, ensuring a long service life.
- Corrosion Resistance: Suitable for environments where corrosion is a concern.
- Versatility: Can be used in various applications, including aviation and other high-stress environments.
- Precision Manufacturing: Seamless pipes and bars are produced with high precision to meet stringent industry standards.
Chemical Composition
The chemical composition of GJB 1951 38Cra 15CrA 20CrA 10A 45A structural steel is critical to its performance. Below is a table presenting the typical chemical composition:
| Element | 38Cra (%) | 15CrA (%) | 20CrA (%) | 10A (%) | 45A (%) |
|---|---|---|---|---|---|
| Carbon (C) | 0.35-0.45 | 0.12-0.18 | 0.17-0.23 | 0.07-0.13 | 0.42-0.50 |
| Chromium (Cr) | 0.80-1.10 | 0.90-1.20 | 0.90-1.20 | - | - |
| Manganese (Mn) | 0.50-0.80 | 0.30-0.60 | 0.50-0.80 | 0.30-0.60 | 0.50-0.80 |
| Silicon (Si) | 0.17-0.37 | 0.17-0.37 | 0.17-0.37 | 0.17-0.37 | 0.17-0.37 |
| Phosphorus (P) | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.035 |
| Sulfur (S) | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.035 |
Mechanical Properties
The mechanical properties of this structural steel are essential for its performance in aviation applications. The table below outlines the typical mechanical properties:
| Property | 38Cra | 15CrA | 20CrA | 10A | 45A |
|---|---|---|---|---|---|
| Tensile Strength (MPa) | 800-950 | 600-750 | 700-850 | 500-650 | 800-950 |
| Yield Strength (MPa) | 600-750 | 400-550 | 500-650 | 300-450 | 600-750 |
| Elongation (%) | ≥12 | ≥15 | ≥14 | ≥18 | ≥12 |
| Impact Energy (J) | ≥40 | ≥35 | ≥40 | ≥30 | ≥40 |
Steel Grade
The steel grades covered under GJB 1951 include 38Cra, 15CrA, 20CrA, 10A, and 45A. Each grade is tailored to specific applications, offering a range of mechanical properties and chemical compositions to suit different needs.
Application
These structural steel pipes and bars are primarily used in the aviation industry for:
- Aircraft structural components
- Engine parts
- Landing gear
- High-stress components requiring high strength and durability
Possible Alternative Grades
While GJB 1951 38Cra 15CrA 20CrA 10A 45A offers excellent properties, alternative grades may be considered based on specific requirements:
- AISI 4130: Known for its strength and toughness.
- AISI 4140: Offers good balance between strength and ductility.
- AISI 4340: High strength and toughness, suitable for heavy-duty applications.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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