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.
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
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.
If you have another question, pls feel free to contact with me.
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GJB 1951 38Cra Structural Steel Pipe High-Quality Structural Steel Bars Seamless pipe For aviation Images
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