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AS1163 C450L0 is a steel grade of hollow section steels specified in the AS/NZS 1163 standard. The nominal minimum yield strength of hollow sections is used to determine the grade classification (in MPa). The prefix “C” is used before the value of the nominal yield strength of the steel to indicate that the section is cold-formed. Only cold-formed structural steel hollow sections are covered by AS1163. Also, if the number is followed by a suffix “L0”, this steel grade must meet the impact test requirements. As a result, AS1163 C450L0 means cold-formed structural steel hollow sections with 450 MPa minimum yield strength, and it must meet the impact test requirements. By meeting these two criteria, AS1163 C450L0 assures that it is a high-quality steel grade that can be used in various structural applications.
AS1163 is an Australian/New Zealand Standard that covers the requirements for cold-formed, electric resistance-welded, steel hollow sections used for structural purposes. It applies to structural hollow sections formed cold without subsequent heat treatment. The Standard considers three strength grades, with or without impact properties, that are suitable for welding. This Standard is important because it ensures that steel hollow sections used for structural purposes meet minimum requirements for strength, ductility, elongation, weldability, and fracture toughness. This Standard is essential for anyone who produces or uses steel hollow sections in structural applications. By setting minimum requirements, the Standard helps to ensure that the steel hollow section produced meets a basic level of quality. This gives producers and users confidence that the steel hollow sections they are using will meet the necessary standards. The Standard also provides a basis for testing and certification of steel hollow sections. This can give users further assurance that the products they are using meet the required standards. Overall, AS1163 is an important Standard that helps to ensure the quality of steel hollow sections used in structural applications.
Sampling from AS1163 C450L0 is the process of taking a small representative portion of a material for testing. It is an essential step in ensuring the accuracy of chemical analysis, as the test results can only be as reliable as the sample that is being tested.There are a number of different methods that can be used for sampling, but the most important thing is to ensure that the sample is representative of the material as a whole. The method of sampling should be in accordance with AS/NZS 1050.1 or ISO 14284, and the chemical composition should be determined in accordance with AS/NZS 1050 series Standards or other procedures that achieve the same, or better, degree of accuracy. By following these guidelines, we can be confident that the results of our tests are accurate and reliable.
| Grades | AS1163 C450L0 Requirements on Chemical Composition (Cast or Product Analysis % Max) | ||||||||||
| C | Si | Mn | P | S | Cr | Mo | Al | Ti | Micro-alloying elements | CE | |
| AS/NZS 1163 C450L0 | 0.2 | 0.25 | 1.7 | 0.03 | 0.03 | 0.3 | 0.35 | 0.1 | 0.04 | 0.15 | 0.43 |
Tensile tests, impact tests, and flattening tests are very important when measuring the mechanical properties of AS1163 C450L0 materials. These tests help determine the material’s ability to resist forces that can cause it to break or deform. The tensile test measures a material’s ability to withstand pulling forces, while the impact test measures its resistance to shattering forces. The flattening test, meanwhile, assesses a material’s ability to resist crushing forces. Each of these tests is essential for understanding the overall strength and durability of AS1163 C450L0 materials. By assessing the results of these tests, engineers can ensure that these materials will be able to perform as intended in a variety of applications. For example, the results of these tests can be used to determine the appropriate thickness for an AS1163 C450L0 material application. By understanding how these materials will respond to different types of forces, engineers can ensure that they are using the right material for the job. Consequently, these tests play an essential role in ensuring the safety and performance of AS/NZS 1163 materials.
- AS1163 C450L0 Tensile Test Requirements
- AS1163 C450L0 Charpy V-Notch Impact Test Requirements
AS1163 C450L0 cold-formed hollow sections are often used in load-bearing applications, and even small deviations from the nominal dimensions can lead to significant changes in performance. As a result, it is important to ensure that cold-formed hollow sections meet the tolerances given in the tables below. The first table is for shape and mass, while the second is for length. As can be seen, the tolerances are relatively tight, especially for mass. This is due to the fact that hollow sections are often used in load-bearing applications, and even small deviations from the nominal dimensions can lead to significant changes in performance. As a result, it is important to ensure that cold-formed hollow sections meet the tolerances given in the tables below. Doing so will help to ensure that they perform as intended and do not fail prematurely.
- AS1163 C450L0 Tolerance for Shape and Mass
- AS1163 C450L0 Tolerance on Length
Pipes that meet both AS1163 C450L0 and API 5L X52 requirements are in high demand, as are materials that meet both standards. The mechanical and chemical testing that we do to demonstrate compliance with these materials requirements is extensive. When it comes to verifying compliance with tensile and fracture toughness requirements, API 5L and AS/NZS 1163 have separate test protocols in place. To establish structural and pressure integrity, hydrostatic pressure tests and non-destructive weld inspection are also done.
- Properties Comparison:
| Standard | API 5L | AS1163 |
| Grade | X52 | C450L0 |
| Yield Strength (MPa) | 360 | 350 |
| Tensile Strength (MPa) | 460 | 430 |
| Comments |
Longitudinal Test Direction ＜ 219.1mm O.D.
Transverse Test Direction ≥ 219.1mm O.D.
|
Longitudinal Test Direction Aged for 15 mins at 150~200℃ |
- Tolerances Comparison:
| Specifications | API 5L | AS1163 | |
|
Dimensional
Tolerances
|
Thickness | ≤ 5.0mm ± 0.5mm | ± 10% |
| 5.0 ~ 15.0mm ± 10% | |||
| ≥ 15.0mm ± 1.5mm | |||
| Straightness | L/500 | L/500 | |
| Bevel Angle | 30°（+5°, -0°） | Not Specified | |
| Bevel Root Face | 1.6mm ± 0.8mm | ||
| End Squareness | 16.0mm max | ||
| Linear Mass |
0.02466t(D-t) （+10%，-3.5%） |
0.02466t(D-t) （+4%，-0%） |
|
