My first Magazine ASTM A333 Carbon Steel Pipe | Page 2

proportionally smaller size test specimen with the gage length equal to 4D ( 4 times the diameter ) is used For strip tests , a deduction for each 1 / 32in . [ 0.8 mm ] decrease in wall thickness below 5 / 16 in . [ 8 mm ] from the basic minimum elongation of the following percentage
1.75 1.25 1.50 1.00 1.50 1.00
Wall Thickness
Grade 1
Grade 3
Grade 6
in .
mm Longitudinal
Transverse
Longitudinal
Transverse
Longitudinal
Transverse
5 / 16 ( 0.312 )
8
35
25
30
20
30
16
9 / 32 (. 281 )
7.2
33
24
28
19
28
15
1 / 4 (. 250 )
6.4
32
23
27
18
27
15
7 / 32 (. 219 )
5.6
30
-
26
-
26
-
3 / 16 (. 188 )
4.8
28
-
24
-
24
-
5 / 32 (. 156 )
4
26
-
22
-
22
-
1 / 8 (. 125 )
3.2
25
-
21
-
21
-
3 / 32 (. 094 )
2.4
23
-
20
-
20
-
1 / 16 (. 063 )
1.6
21
-
18
-
18
-