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Square tubing stock


CFERW Cold Formed Electric Resistance Welded
Mechanical Sizes under 2" outside diameter
Structural Sizes 2" outside diameter & over with walls 3/16" & thicker

Square Tubing
*Approimate ID dimension does not allow for ID weld bead.

OD       

  WALL

ID

LBS/FT

1/2

.065

.37

.39

3/4

.065

.62

.69

.083

.58

.75

.120

.51

1.03

1

.065

.87

.83

.083

.83

1.03

.120

.76

1.44

1 1/4

.065

1.12

1.05

.083

1.08

1.32

.109

1.03

1.69

.120

1.01

1.84

.188

.87

2.40

11/2

.065

1.37

1.27

.083

1.33

1.60

.120

1.26

2.25

.188

1.12

3.35

.250

1.00

4.00

1 3/4

.083

1.58

1.88

.120

1.51

2.66

2

.065

1.87

1.71

.083

1.83

2.16

.120

1.76

3.05

OD      

  WALL

ID

LBS/FT

2

.188

1.50

4.32

.250

1.75

5.41

2 1/4

.250

1.75

7.00

2 1/2

.120

2.26

3.90

.188

2.12

5.59

.250

2.00

7.11

3

.083

2.83

3.29

.120

2.76

4.75

.188

2.62

6.87

.250

2.50

8.81

3 1/2

.120

3.25

5.68

.188

3.12

8.15

.250

3.00

10.51

4

.120

3.76

6.40

.188

3.62

9.42

.250

3.50

12.21

.375

3.25

17.21

5

.250

4.50

15.62

6

.188

5.64

14.53

.250

5.50

19.02

8

.250

7.50

25.82

10

.250

9.50

32.63

 

Specifications

Grade Class Type Specification
1010 CFERW Mechanical ASTM-A-513, Type 1 or 2
A500B CFERW Structural ATSM-A-500, Grade B

Chemical Composition
Grade Designation Chemistry-Ladle Analysis
Carbon Manganese Phosporous Sulfur
A501 (A36) 0.26% max - 0.04% max 0.05% max
A500A 0.26% max - 0.04% max 0.05% max
A500B 0.26% max - 0.04% max 0.05% max
A500C 0.23% max 1.35% max 0.04% max 0.05% max
Copper, when copper steel is specified, 0.20% minimum.
Mechanical Properties
Grade Designation Grade Tensile Strength Yield Strength Minimum Elongation In 2 Inches Minimum
Condition Minimum
A501 (A36) Hot Formed 58,000 psi 36,000 psi 23%
A500A Cold Formed 45,000 psi 39,000 psi 25%
A500B Cold Formed 58,000 psi 46,000 psi 23%
A500C Cold Formed 62,000 psi 50,000 psi 21%
Stock is usually cold formed welded A500B steel.

Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot.  For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Hardness Test: P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Notes for Bend Test: For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
The inside diameter of the bend shall be 1 inch [25 mm].
Hydrostatic Test Each length of pipe shall be Hydro tested, at option of manufacture nondestructive electric testing can be used.

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