What is AS_NZS 1163

AS/NZS 1163

AS/NZS 1163 covers cold-formed structural steel hollow sections. It is a premium product that meets the rigorous Australian/New Zealand Standards.

These hollow sections are made by cold forming and electric resistance welding. This ensures the best quality for structural use.

The steel hollow sections come in three strength grades. You can get them with or without impact properties. They are good for welding and form cold without heat treatment.

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AS 1163  Specifications

  • Standard: AS/NZS 1163
  • Procedure: ERW (CHS), HOLLOW SECTION (RHS, SHS)
  • Dimensions: 13.5mm -610mm, 20*20 – 400*400mm
  • Thickness: 2.3mm – 12.7mm, 1.6 – 16mm
  • Unit Length: Random: 4 – 16mtrs (Fixed length be specified at time of order)
  • Steel Grade: C250 C250L0, C350 C350L0, C450 C450L0
  • Surface Coating: NOPC. Varnishing, Oiling, Hot Dip Galvanizing, FBE, 2PP, 3PP, 2PE, 3PE
  • End Type: Square Cut, Plain, Bevelled, Threaded, Grooved
  • Joint Method: Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
  • Pipe Machining: Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding
hollow_structural_section_cold_formed_hollow_section_UNIASEN

Dimensions of AS 1163 Pipe

Outside Diameter
(mm)
Circular Hollow Sections Wall Thickness
(mm)
OD
42.23.24.04.9
48.33.24.05.4
60.33.64.55.4
76.12.33.23.64.55.9
88.92.63.24.04.85.05.55.9
101.62.63.24.05.0
114.33.23.64.55.44.86.0
139.73.03.55.05.4
165.133.55.05.4
168.34.86.47.1
219.14.86.48.2
273.14.86.49.3
323.96.49.512.7
355.66.49.512.7
406.46.49.512.7
4576.49.512.7
5086.49.512.7
6106.49.512.7
Size(mm)Square Hollow Sections Wall Thickness
(mm)
20 x 201.6
25 x 251.62.02.53.0
30 x 301.62.0
35 x 351.62.02.53.0
40 x 401.62.02.54.0
50 x 501.62.02.53.04.0
65 x 652.02.53.0
75 x 752.53.03.54.05.06.0
89 x 893.55.06.0
100 x 1003.04.05.06.09.0
125 x 1254.05.06.09.0
150 x 1505.06.09.0
200 x 2005.06.09.0
250 x 2506.09.0

Chemical Requirement of AS 1163 Materials

We have strict quality controls. They keep the chemical components intact. This gives you a product that works consistently and reliably.

CHEMICAL COMPOSITION
Grades
(see
Note 1)
Chemical Composition (cast or product analysis) (see Note 2)
% max.
CSiMnPSCrMoAl
(see Note 3)
TiMicro-alloying
elements
CE
(see Note 4)
C250,
C250L0
0.120.050.500.030.030.150.100.100.040.03
(see Note 5)
0.25
C350,
C350L0
0.200.251.600.030.030.300.100.100.040.15
(see Note 6)
0.43
C450,
C450L0
0.200.25
(see Note 7)
1.700.030.030.300.350.100.040.15
(see Note 6)
0.43
NOTES:
1       The use of sulphide modification manufacturing techniques for these grades is permitted.
2       The following elements may be present to the limits stated:
(a)        Copper            0 .25%.
(b)         Nickel             0 .25% .
3       Limits specified are for soluble or total aluminum.
4       Carbon equivalent (CE) is calculated from the following equation:

5      Applies to niobium and vanadium only. However, niobium greater than 0.010% is not permitted.
6      Applies to niobium, vanadium and titanium only. However, vanadium greater than 0 . 10% is not permitted.
7      For circular hollow sections (CHS), the silicon limit shall be 0.45.

Mechanical Requirement Of AS1163 Materials

Our quality control processes guarantee that these traits are kept during production. They give you a product that meets your project’s demands.

TENSILE TEST REQUIREMENTS
GradeMinimum
Yield
StrengthMPa
Minimum
Tensile
StrengthMPa
Minimum Elongation as a Proportion
of  The Gauge Length of 5.65√So  (see Note)
%
Circular Hollow Sections

do/t

Rectangular Hollow Sections

b/t, d/t

≤15>15≤ 30>30≤15>15 ≤30>30
C250, C250L0250320182022141618
C350, C350L0350430161820121416
C450, C450L0450500121416101214
NOTE: These limits apply to the face from which the tensile test is taken. That is, for RHS, the use of  b/t or d/t  ratio is dependent on which face the test specimen is cut from.  For  SHS,  there is only one ratio (as b = d).
CHARPY V-NOTCH IMPACT TEST REQUIREMENTS
GradeTest
temperature°C
Minimum absorbed energy, J
Size of test piece
10 mm  ×   10 mm10 mm ×   7.5 mm10 mm  ×  5 mm
Average
of 3 tests
Individual
test
Average
of 3 tests
Individual
test
Average
of 3 tests
Individual
test
C250L0
C350L0
C450L0
0272022161813

Why Choose UNIASEN?

  • Our AS/NZS 1163 Cold-formed steel hollow sections have precise specifications. They are to meet your needs.
  • We offer various steel grades, including C250/ C250L0, C350/C350L0, and C450/C450L0, and provide surface coatings that enhance durability.
    You can customize the end types and joint methods. Our machining services ensure a perfect fit for your project.
  • We offer a wide range of sizes, shapes, and thicknesses, all conforming to the stringent Australian/New Zealand Standard.
  • Our experts will guide you through the selection process. They will ensure the dimensions fit your structural and engineering needs.

With UNIASEN, you can be confident. The dimensions of your steel hollow sections are precise, consistent, and tailored to your specifications.

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