ASTM A283 Grade C D Hollow Structural Steel Tube: Intermediate Tensile Strength Carbon Steel Tube for Mechanical Manufacturing
Introduction
ASTM A283 Grade C and D hollow structural steel tubes are widely used in mechanical manufacturing due to their intermediate tensile strength and excellent weldability. These tubes are primarily used in structural applications, where strength and durability are critical.
Material and Specification
ASTM A283 is a specification for low and intermediate tensile strength carbon steel plates. The grades C and D are specifically designed for structural applications, providing a good balance of strength and ductility.
Key Features
- Intermediate Tensile Strength: Suitable for various structural applications.
- Good Weldability: Can be easily welded using standard welding techniques.
- Versatile Applications: Used in construction, manufacturing, and other industries.
- Cost-Effective: Offers a balance of performance and affordability.
Chemical Composition
| Element | Grade C (%) | Grade D (%) |
| Carbon (C) | 0.24 max | 0.26 max |
| Manganese (Mn) | 0.60 - 0.90 | 0.60 - 0.90 |
| Phosphorus (P) | 0.04 max | 0.04 max |
| Sulfur (S) | 0.05 max | 0.05 max |
| Silicon (Si) | 0.10 - 0.40 | 0.10 - 0.40 |
Mechanical Properties
| Property | Grade C | Grade D |
| Yield Strength (MPa) | 205 | 240 |
| Tensile Strength (MPa) | 310 | 400 |
| Elongation (%) | 23 | 20 |
| Hardness (Brinell) | 120 | 130 |
Steel Grade
- ASTM A283 Grade C
- ASTM A283 Grade D
Application
ASTM A283 Grade C and D hollow structural steel tubes are commonly used in:
- Construction of buildings and bridges
- Manufacturing of machinery and equipment
- Structural frames for various applications
- Automotive and transportation components
Possible Alternative Grades
- ASTM A36: A common structural steel grade with similar properties.
- ASTM A500: A specification for cold-formed welded and seamless carbon steel structural tubing.
- ASTM A572: A high-strength low-alloy steel grade suitable for structural applications.
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