AS 1163 C250

AS 1163 C250

AS/NZ 1163 C250 hollow sections are constructed in accordance with the Australian standard for cold-formed structural steel hollow sections with specified tensile test requirements. Unlike grade C250 L0, grade C250 does not require a Charpy v-notch impact test.

AS1163 C250 is an Australian standard that specifies the steel grade for cold-formed structural steel hollow sections. The steel’s nominal minimum yield strength (C250) is used to determine the grade classification (C250) (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 AS 1163.

PRODUCT FEATURES

Dimensions and Sizes of AS1163 C250 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 C250 Pipes

Grades

Chemical Composition of AS 1163 C250 materials

(Cast or product analysis)            % max.

C

Si

Mn

P

S

Cr

Mo

Al

Ti

Micro-alloying elements

CE

C250

0.12

0.05

0.50

0.03

0.03

0.15

0.10

0.10

0.04

0.03

0.25

Tensile Test Requirements of AS 1163 C250 L0 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

C250

250

320

18

20

22

14

16

18

NOTE: These restrictions only apply to the side of the tensile test that is being performed. That is, whether the test specimen is sliced from the b/t or d/t face determines whether the RHS ratio is b/t or d/t. There is only one ratio for SHS (as b = d).

Shape and Weight Tolerances of AS 1163 C250 L0 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 manufacturer and the customer must agree on tolerance for out-of-roundness.
  2. Convexity and concavity tolerances are unaffected by external dimension tolerances.
  3. The straightness tolerance covers straightness in any one plane.
  4. In the absence of any other requirement, the provided mass is assumed to be the nominal mass.

Length Tolerances of AS 1163 C250 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 type of length needed, as well as the length or length range, must be included in the inquiry and order. Alternatively, length tolerances must be specified at the time of ordering.

AS1163 C250 AND API 5L Gr. B Dual Specs Pipes

There is a high demand for dual-spec pipes, such as AS1163 C250 / API 5L Gr. B materials. To demonstrate conformity with these materials requirements, we conduct a number of mechanical/chemical tests. To ensure compliance with tensile and fracture toughness requirements, API 5L and AS/NZS 1163 each need separate test methodologies. To establish structural and pressure integrity, hydrostatic pressure tests and non-destructive weld inspection are also done.

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