| Grade Marking | Specification | Material and Treatment | Nominal Size (In.) | Mechanical Properties | Hardness Rockwell | |||||
| Proof Load Min (ksi) |
Yield Strength Min (ksi) |
Tensile Strength Min (ksi) |
Elong % Min | RA % Min | Min | Max | ||||
 |
SAE J429 Grade 1 |
Low or Medium Carbon Steel | 1⁄4” – 11⁄2“ | 33 | 36 | 60 | 18 | 35 | B70 | B100 |
 |
A307 Grade A |
1⁄4” – 4″ | – | – | 60 | 18 | – | B69 | B100 | |
 |
A307 Grade B |
– | – | 60 min 100 max |
18 | – | B69 | B95 | ||
 One End Green |
A307 GRADE C |
– | 36 | 58 min 80 max |
23 | – | – | – | ||
 One End Blue |
F1554 GRADE36 |
– | 36 | 58 min 80 max |
23 | 40 | – | – | ||
 One End Yellow |
F1554 GRADE 55 |
1⁄4” – 2″ | – | 55 | 75 min 95 max |
21 | 30 | – | – | |
| 21⁄4“- 21⁄2“ | 21 | 22 | ||||||||
| 23⁄4” – 3″ | 21 | 20 | ||||||||
| 31⁄4” – 4″ | 21 | 18 | ||||||||
|
SAE J429 Grade 2 |
1⁄4” – 3⁄4” 7⁄8” – 11⁄2“ |
55 33 |
57 36 |
74 60 |
18 18 |
35 |
B80 B70 |
B100 B100 |
|
 |
A193/A320 Grade B8 Class 1 |
AISI SS304 Stainless | No Restrictions | – | 30 | 75 | 30 | 50 | – | B96 |
 |
A193/A320 Grade B8M |
AISI SS316 Stainless Steel | ||||||||
 |
A325 TYPE 1 |
Medium Carbon Steel, Q & T |
1⁄2” – 1″ 11⁄8” – 11⁄2“ |
85 74 |
92 81 |
120 105 |
14 | 35 |
C24 C19 |
C35 C31 |
 |
A325 TYPE 3 |
Atmospheric Corrosion Resistant Steel, Q & T |
||||||||
 |
SAE J429 Grade 5 |
Medium Carbon Steel, Q & T |
1⁄4” – 1″ 11⁄8” – 11⁄2“ |
85 74 |
92 81 |
120 105 |
14 | 35 |
C25 C19 |
C34 C30 |
 |
A449 TYPE 1 |
1⁄4” – 1″ 11⁄8” – 11⁄2” 15⁄8” – 3″ |
85 74 55 |
92 81 58 |
120 105 90 |
14 | 35 |
C25 C19 B91 |
C34 C30 B100 |
|
 |
A449 TYPE 3 |
Weathering Steel, Q & T |
1⁄4” – 1″ 11⁄8” – 11⁄2” 15⁄8” – 3″ |
85 74 55 |
92 81 58 |
120 105 90 |
14 | 35 |
C25 C19 B91 |
C34 C30 B100 |
 |
A193 B7 |
Medium Carbon Alloy Steel, Q & T |
1⁄4” – 21⁄2” 25⁄8” – 4″ 41⁄8” – 7″ |
– |
105 95 75 |
125 115 100 |
16 16 18 |
50 50 50 |
– |
C35 C35 C35 |
 |
A354 GRADE BC |
1⁄4” – 21⁄2” 25⁄8” – 4″ |
105 95 |
109 94 |
125 115 |
16 16 |
50 45 |
C26 C22 |
C36 C33 |
|
|
One End Red |
F1554 GRADE 105 |
1⁄4” – 3″ | – | 105 | 125 min 150 max |
15 | 45 | – | – | |
 |
A320 GRADE L7 |
AISI 4140, 4142, or 4145 | 1⁄4” – 21⁄2“ | – | 105 | 125 | 16 | 50 | – | – |
 |
A320 GRADE L43 |
AISI 4340 | 1⁄4” – 4″ | – | 105 | 125 | 16 | 50 | – | – |
 |
A490 TYPE 1 |
Medium Carbon Alloy Steel, Q & T |
1⁄2” – 11⁄2“ | 120 | 130 | 150 min 173 max |
14 | 40 | C33 | C38 |
 |
A490 TYPE 3 |
Atmospheric Corrosion Resistant Steel, Q & T |
||||||||
 |
SAE J429 Grade 8 |
Medium Carbon Alloy Steel, Q & T |
1⁄4” – 11⁄2“ | 120 | 130 | 150 | 12 | 35 | C33 | C39 |
 |
A354 GRADE BD |
1⁄4” – 21⁄2” 25⁄8” – 4″ |
120 105 |
130 115 |
150 140 |
14 | 40 |
C33 C31 |
C39 C39 |
|
