|
Grade
Identification
Marking
|
Specification
|
Material
|
Nominal Size In.
|
Proof
Load
Stress
ksi
|
Tensile
Strength
Min
ksi
|
Hardness
Rockwell
|
|
Min
|
Max
|
|
|
SAE
J429 - Grade 1
|
Low
or Medium Carbon Steel
|
1/4 thru 1 1/2
|
33
|
60
|
B70
|
B100
|
|
SAE J429 - Grade 2
|
1/4 thru 3/4
over 3/4 thru
1 1/2
|
55
33
|
74
60
|
B80
B70
|
B100
B100
|
|
ASTM
A307 - Grade A
|
1/4 thru 4
|
--
|
60
|
B69
|
B100
|
|
ASTM
A307 - Grade B
|
1/4 thru 4
|
--
|
60
min
100 max
|
B69
|
B95
|
|
|
SAE
J429 - Grade 5
ASTM A449 -- Type 1
|
Medium
Carbon Steel, Quenched and Tempered
|
1/4
thru 1
over 1 thru
1 1/2
|
85
74
|
120
105
|
C25
C19
|
C34
C30
|
|
ASTM
A449 -- Type 1
|
over
1/2 thru 3
|
55
|
90
|
183
|
235
|
|
|
SAE
J429 -- Grade 5.1
|
Low
or Medium Carbon Steel, Quenched and Tempered
|
No.
6 thru 1/2
|
85
|
120
|
C25
|
C40
|
|
|
SAE
J429 -- Grade 5.1
|
Low
Carbon Martensite Steel, Quenched and Tempered
|
1/4
thru 1
|
85
|
120
|
C26
|
C36
|
|
ASTM
A449 -- Type 2
|
C25
|
C34
|
|
ASTM
A325 -- Type 1
|
Medium
Carbon Steel, Quenched and Tempered
|
1/2
thru 1
over 1 to 1 1/2
|
85
74
|
120
105
|
C24
C19
|
C35
C31
|
|
|
ASTM
A325 -- Type 2
|
Low
Carbon Steel, Quenched and Tempered
|
 |
ASTM
A325 -- Type 3
|
Atmospheric
Corrosion
Resistant Steel, Quenched and Tempered
|
