AS 1163 C350

AS/NZS 1163 C350

AS/NZ 1163 C350 is a type of hollow section which is manufactured according to the Australian standard for cold-formed structural steel hollow sections with specific tensile test requirements. Different from grade C350 L0, there is no Charpy v-notch impact test requirement for grade C350.

AS1163 C350 is an Australian standard that says what kind of steel should be used to make hollow sections of cold-formed steel. The steel’s nominal minimum yield strength (C350) is used to figure out the grade (C350) of the metal (in MPa). When the value of the nominal yield strength of steel is written, it starts with “C.” This tells us that this section has been cold formed. In AS 1163, only the parts that are cold-formed structural steel hollow sections are covered by this rule.

PRODUCT FEATURES

Dimensions and Sizes of AS1163 C350 Pipe

NPS

O. D.

Nominal Wall Thickness

DN

Inch

mm

SCH5S

SCH10S

SCH10

SCH20

SCH30

SCH40

SCH60

SCH80

SCH100

SCH120

SCH140

SCH160

STD

XS

XXS

50

2″

60.3

1.65

2.77

3.91

5.54

8.74

3.91

5.54

11.07

65

2-1/2″

76

2.11

3.05

5.16

7.01

9.53

5.16

7.01

14.02

80

3″

88.9

2.11

3.05

5.49

7.62

11.13

5.49

7.52

15.24

90

3-1/2″

101.6

2.11

3.05

5.74

8.08

5.74

8.08

100

4″

114.3

2.11

3.05

6.02

8.58

11.13

13.49

6.02

8.56

17.12

125

5″

141.3

2.77

3.4

6.55

9.53

12.7

15.88

6.55

9.53

18.05

150

6″

168.3

2.77

3.4

7.11

10.97

14.27

18.26

7.11

10.97

21.95

200

8″

219.1

2.77

3.76

6.35

7.04

8.18

10.31

12.7

15.09

18.26

20.62

23.01

8.18

12.7

22.23

250

10″

273.1

3.4

4.19

6.35

7.8

9.27

12.7

15.09

18.26

21.44

25.4

28.58

9.27

12.7

25.4

300

12″

323.9

3.96

4.57

6.35

8.38

10.31

14.27

17.48

21.44

25.4

28.58

33.32

9.53

12.7

25.4

350

14″

355.5

3.96

4.78

6.35

7.92

9.53

11.13

15.09

19.05

23.83

27.79

31.75

35.71

9.53

12.7

400

16″

406.4

4.19

4.78

6.35

7.92

9.53

12.7

16.66

21.44

26.19

30.96

36.53

40.49

9.53

12.7

450

18″

457.2

4.19

4.78

6.35

7.92

11.13

14.27

19.05

23.83

39.36

34.93

39.67

45.24

500

20″

508

4.78

5.54

6.35

9.53

12.7

15.09

20.62

26.19

32.54

38.1

44.45

50.01

550

22″

558.8

4.78

5.54

6.35

9.53

12.7

22.23

28.58

34.93

41.28

47.63

53.98

600

24″

609.6

5.54

6.35

6.35

9.53

14.27

17.48

24.61

30.96

38.89

46.02

52.37

59.54

Chemical Composition of AS 1163 C350 Pipes

Grades

Chemical Composition of AS 1163 C350 materials

(Cast or product analysis)            % max.

C

Si

Mn

P

S

Cr

Mo

Al

Ti

Micro-alloying elements

CE

C350

0.20

0.25

1.60

0.03

0.03

0.30

0.10

0.10

0.04

0.15

0.43

Tensile Test Requirements of AS 1163 C350 Pipes

Grade

Minimum

yield

strength

MPa

Minimum tensile

strength

MPa

Minimum elongation   %

Circular hollow sections

do/t

Rectangular hollow sections

b/t, d/t

~15

>15 ~30

>30

~15

>15 ~30

>30

C350

350

430

16

18

20

12

14

16

NOTE: These restrictions apply to the face from which the tensile test is performed. That is, the usage of b/t or d/t ratio for RHS is determined by which face the test specimen is cut from. There is only one ratio for SHS (as b = d).

Shape and Weight Tolerances of AS 1163 C350 Pipes

Characteristic

Circular Hollow Sections

Square and Rectangular Hollow Sections

External dimensions (do, d and b)

±1%, with a minimum of ±0.5 mm

and a maximum of ±10 mm

±1%, with minimum of ±0.5 mm

Thickness (t)

For do £ 406.4 mm: ±10%

For do > 406.4 mm:

±10% with a max of ±2 mm

±10%

Out-of-roundness (o)

±2% for hollow sections having a diameter to thickness ratio not exceeding 100 (Check Note 1)

Concavity/convexity

(Check Note 2)

Max. 0.8% or 0.5 mm, whichever is greater

Squareness of sides

90°±1°

External corner profile

Check Table 5

Twist (v)

2 mm + 0.5 mm/m length

Straightness (Check Note 3)

0.20% of total length

0.15% of total length

Mass (m) per unit length

Not less than 0.96 times the specified mass (Note 4) on individual lengths

NOTES:

  1. When the diameter to thickness ratio reaches 100, the producer and consumer must agree on the tolerance for out-of-roundness.
  2. Convexity and concavity tolerances are independent of external dimension tolerances.
  3. The straightness tolerance is applicable to straightness in any single plane.
  4. In the absence of any other condition, the indicated mass is regarded as the nominal mass.

Length Tolerances of AS 1163 C350 Pipes

Type of length

Range mm

Tolerance

Random length

4000 to 16000 with a range of 2000 per order item

10% of the sections delivered may be less than the minimum for the ordered range, but not less than 75% of the minimum

Mill length

(or “unspecified”)

All

+100 mm

–0mm

Precision length

<6000

+5 mm

–0mm

6000 ~ 10000

+15 mm

–0mm

>10000

+5 mm, + 1 mm/m

–0mm

NOTE: The inquiry and order must specify the type of length desired as well as the length or length range, as applicable. Alternatively, length tolerances must be provided when the order is placed.

AS1163 C350 / API 5L X42 Dual Specs Pipes

There is a significant demand for dual-spec pipes, such as AS1163 C350 / API 5L X42 materials, which are available in limited supply. Several mechanical and chemical tests are performed to show compliance with these material specifications. API 5L and AS/NZS 1163 each require their own test techniques in order to guarantee compliance with their respective tensile and fracture toughness standards. Hydrostatic pressure testing and non-destructive weld inspection are also performed in order to determine the structural and pressure integrity of the structure.

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