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AS1163 C250L0 is the lowest grade in AS/NZS 1163 standard, with a minimum yield strength of 250 MPa. This grade must also meet impact test requirements, making it suitable for use in structural applications. AS C250L0 hollow sections are frequently used in construction, as they offer good strength and resistance to impact forces. However, they are not as strong as higher grades of steel, and so are not suitable for use in high-stress applications.
AS1163 is the Australian/New Zealand Standard for cold-formed, electric resistance-welded, steel hollow sections used for structural purposes. It considers three strength grades, with or without impact properties, that are suitable for welding. This Standard applies to structural hollow sections formed cold without subsequent heat treatment. The Standard covers the requirements for the production and supply of cold-formed, electric resistance-welded, steel hollow sections used for structural purposes. It includes information on hollow section dimensions, manufacturing methods, inspection and testing requirements, and packaging and labeling requirements. This Standard does not cover cosmetic imperfections or mechanical properties.
Sampling from AS1163 C250L0 materials is an important step in any chemical analysis. The method of sampling must be carefully chosen in order to ensure accuracy and precision in the results. For this reason, the method of sampling should be in accordance with AS/NZS 1050.1 or ISO 14284. These standards ensure that the sample is representative of the population and that the results are accurate. Chemical composition should then be determined using AS/NZS 1050 series Standards or other procedures that achieve the same, or better, degree of accuracy. This ensures that the results of the analysis are reliable and can be used to make informed decisions.
| Grades |
Chemical Composition of AS1163 C250L0 materials
(Cast or product analysis) % max.
|
||||||||||
| C | Si | Mn | P | S | Cr | Mo | Al | Ti | Micro-alloying elements | CE | |
| C250L0 | 0.12 | 0.05 | 0.5 | 0.03 | 0.03 | 0.15 | 0.1 | 0.1 | 0.04 | 0.03 | 0.25 |
Tensile tests, impact tests, and flattening tests are very important when measuring the mechanical properties of AS1163 C250L0 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 C250L0 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, these materials are often used in the construction of bridges and buildings. As such, they must possess the necessary strength and durability to withstand the loads that will be placed on them. The results of the tensile, impact, and flattening tests can help engineers to understand how well AS/NZS 1163 C250L0 materials will perform in these types of applications.
- AS/NZS 1163 C250L0 Tensile Test Requirements
- AS/NZS 1163 C250L0 Charpy V-Notch Impact Test Requirements
AS1163 C250L0 cold-formed hollow sections are subject to tight dimensional and mass tolerances, as evidenced by the tables below. These tolerances are necessary in order to ensure that the hollow sections will perform as intended when used in load-bearing applications. Deviations from the nominal dimensions, even if they are small, can lead to significant changes in performance, and this could result in failure. As such, it is imperative that cold-formed hollow sections meet the tolerances given in the tables. This will help to ensure that they function as intended and do not fail prematurely.
- AS/NZS 1163 C250L0 Tolerance for Shape and Mass
- AS/NZS 1163 C250L0 Tolerance on Length
Dual-spec pipes, such as those manufactured to AS1163 C250L0 / API 5L Gr. B requirements are in high demand. We conduct a number of mechanical/chemical tests to demonstrate conformance to both materials’ requirements. Both API 5L and AS/NZS 1163 specify distinct test techniques for determining compliance with tensile and fracture toughness requirements. Additionally, hydrostatic pressure testing and non-destructive weld inspection are conducted to verify structural and pressure integrity.
– Properties Comparison
| Standard | API 5L | AS1163 |
| Grade | B | C250L0 |
| Yield Strength (MPa) | 245 | 250 |
| Tensile Strength (MPa) | 415 | 320 |
| 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%） |
|
