ASTM A500 Grades
ASTM A500 steel pipe has four grades. They are based mainly on chemicals and properties. Each grade is designed for a specific structural application.
Grade A is the most basic level. Grade B is the most popular of the ASTM A500 steel pipe grades. Suitable for a wide range of structural applications.
• ASTM A500 Grade A
Grade A is the most basic of the ASTM A500. It is used in simpler applications where cost matters.
It has the lowest yield and tensile strengths among the grades. This makes it good for light structural duties, non-critical uses, or where surface smoothness doesn’t matter
• ASTM A500 Grade B
Grade B is stronger than Grade A.
It is one of the most used grades because it has a good mix of strength and ductility.
It is ideal for structures like building frames and bridges. They have moderate stress.
• ASTM A500 Grade C
Grade C is the material of choice for steel pipe designers and engineers. Because Grade C provides a more balanced yield strength and tensile strength and is more cost-effective,
it is a more suitable choice for high-stress structural applications.
• ASTM A500 Grade D
Grade D offers the highest tensile strength among the ASTM A500 grades. It has a lower yield strength than C but a higher tensile strength. This grade is less common.
It is useful where high tensile strength and specific toughness are required.
Advantages Of ASTM A500 Carbon Steel Pipe Construction
• High Strength:
The ASTM A500 carbon steel construction pipes suitable for various of heavy structural applications such as Bridges, buildings and conveying systems.
• Good Weldability:
The ASTM A500 carbon steel structure pipe can be easily welded and machined. This makes it more flexible to use during manufacturing and installation compared to other pipes.
• Variety of Sizes and Shapes:
It includes round, square, and rectangular shapes. This makes it fit for various engineering and design needs.
• Excellent Corrosion Resistance:
Due to its manufacturing materials and processes. ASTM A500 carbon steel structural pipes have good corrosion resistance and are capable of long-term stable operation in harsh environments.
Chemical Requirement
| Element | Composition, % |
| Grades B and D | Grade C |
| Heat | Product | Heat | Product |
| Carbon, maxA | 0.26 | 0.3 | 0.23 | 0.27 |
| Manganese, maxA | 1.35 | 1.4 | 1.35 | 1.4 |
| Phosphorus, max | 0.035 | 0.045 | 0.035 | 0.045 |
| Sulfur, max | 0.035 | 0.045 | 0.035 | 0.045 |
| Copper, minB | 0.2 | 0.18 | 0.2 | 0.18 |
| A For each reduction of 0.01 percentage point below the speciefid maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 % by heat analysis and 1.60 % by product analysis. |
| B If copper-containing steel is specified in the purchase order. |
Mechanical Requirement
| Tensile Requirements |
| Round, Square, Rectangular, and Special Tubular Shapes |
| Grade B | Grade C | Grade D |
Tensile strength, min,
psi [MPa] | 58 000 | 62 000 | 58 000 |
| [400] | [425] | [400] |
| Yield strength, min, psi[MPa] | 46 000 | 50 000 | 36 000 |
| [315] | [345] | [250] |
Elongation in 2 in. [50
mm], min, %C | 23A | 21B | 23A |
ASTM A500 Vs A513
• Manufacturing Process:
ASTM A500 carbon steel pipe is usually made of cold-drawn or ERW welded. ASTM A513 pipe is often cold rolled or cold drawn. This makes ASTM A500 tubing strong and rust-resistant.
• Appications:
ASTM A500 carbon steel pipe is mainly used in heavy structures like bridges and buildings. ASTM A513 is more commonly used to make lighter parts for machines and cars.
• Size and Shape:
The ASTM A500 offers more sizes and shapes. It includes round, square, and rectangular. The ASTM A513 mainly offers round tubing.
Cost
• The cost of ASTM A500 carbon steel pipe is usually slightly higher than ASTM A513. This is due to differences in manufacturing and use.
• In summary, ASTM A500 carbon steel pipe is ideal for many projects. It has great strength, weldability, and corrosion resistance. It also comes in many sizes.
• The ASTM A513 also has advantages in some cases. But, the ASTM A500 is a more reliable and cheaper choice for heavy construction.
