AS1163 is the Australian/New Zealand Standard for Cold-formed structural steel hollow sections. This Standard specifies the requirements for the production and supply of 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 purpose of AS1163 standard is to provide manufacturers and suppliers with a uniform method of specifying the requirements for the production of cold-formed, electric resistance-welded, steel hollow sections. The dimensions, tolerances, and other relevant properties specified in this Standard are those appropriate to current manufacturing capabilities and practices. This Standard is not intended to convert non-compliant steels into grades that meet the requirements of this Standard. However, nothing in this Standard shall be taken to prohibit the use of lower grades of material than those specified if such use can be shown to be consistent with good engineering practice. In particular, nothing in AS1163 standard precludes the formation of cubic or non-circular shapes from material complying with the dimensional tolerances specified herein by methods.
Steel Grades of AS/NZS 1163 Pipes
The grade designation (for example, C250) is based on the steel's nominal minimum yield strength (in MPa). To indicate that the section is cold-formed, the prefix 'C' is used before the value of the nominal yield strength of the steel. AS1163 only takes into account cold-formed structural steel hollow sections. As specified in AS1163, the suffix 'L0' denotes impact properties at 0°C.
C250
AS1163 C250 represents cold-formed structural steel hollow sections with 250 MPa minimum yield strength, and no impact test required.
C350
AS1163 C350 means cold-formed structural steel hollow sections with 350 MPa minimum yield strength. It is an essential material in today's construction industry.
C450
Thanks to its 450 MPa minimum yield strength high strength and formability, AS1163 C450 is a versatile material that can be used in a wide range of projects.
C250 L0
C250L0 hollow sections are frequently used in construction, as they offer good strength and resistance to impact forces. But not suitable for use in high-stress applications.
C350 L0
their superior strength and durability make them ideal for use in construction, especially in areas where high winds or seismic activity are a concern.
C450 L0
AS1163 C450L0 assures that it is a high-quality steel grade that can be used in various structural applications.
AS / NZS 1163-C350
AS / NZS 1163-C350L0
where
AS / NZS 1163 = number of this Standard
C = cold – formed sections
350 = minimum yield strength in MPa ( see Table 7)
L = guaranteed impact properties of the material ( when applicable )
0 = low temperature impact test at 0C( when applicable )
