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
-