ASTM A320 L7/ L7m PTFE Threaded Rods/Stud Bolt
Product Description
We offer high quality ASTM A320 L7 Bolts from 3/8" to 2" Diameter in multiple lengths and either standard thread length or custom thread length
Model NO.: ASTM A320 L7/ L7m PTFE Threaded Rods/Stud Bolt
Type: Round Head
Head Style: Round
Grade: ASTM A320 L7
Finish: Hot Galvanizing
Trademark: C&N
Material: High Strength Steel
Connection: Common Bolt
Standard: ANSI
Application: Chemical Industry
Steel Grade: ASTM A320 L7
Origin: China
A320 Grades
A320 Mechanical Properties
A320 Chemical Properties
Product Description
We offer high quality ASTM A320 L7 Bolts from 3/8" to 2" Diameter in multiple lengths and either standard thread length or custom thread length
Model NO.: ASTM A320 L7/ L7m PTFE Threaded Rods/Stud Bolt
Type: Round Head
Head Style: Round
Grade: ASTM A320 L7
Finish: Hot Galvanizing
Trademark: C&N
Material: High Strength Steel
Connection: Common Bolt
Standard: ANSI
Application: Chemical Industry
Steel Grade: ASTM A320 L7
Origin: China
A320 Grades
L7 Alloy steel | AISI 4140/4142 Quenched and tempered |
|---|---|
| L43 Alloy steel | AISI 4340 Quenched and tempered |
| B8 Class 1 Stainless steel | AISI 304, carbide solution treated |
| B8M Class 1 Stainless steel | AISI 316, carbide solution treated |
| B8 Class 2 Stainless steel | AISI 304, carbide solution treated, strain hardened |
| B8M Class 2 Stainless steel | AISI 316, carbide solution treated, strain hardened |
A320 Mechanical Properties
Grade | Diameter | Tensile, ksi, min | Yield, ksi, min | Charpy Impact 20-ft-lbf @ temp | Elong, %, min | RA, %, min |
|---|---|---|---|---|---|---|
| L7 | Up to 21?2 | 125 | 105 | -150° F | 16 | 50 |
| L43 | Up to 4 | 125 | 105 | -150° F | 16 | 50 |
| B8 Class 1 | All | 75 | 30 | N/A | 30 | 50 |
| B8M Class 1 | All | 75 | 30 | N/A | 30 | 50 |
| B8 Class 2 | Up to 3?4 | 125 | 100 | N/A | 12 | 35 |
| 7?8 - 1 | 115 | 80 | N/A | 15 | 35 | |
| 11?8 - 11?4 | 105 | 65 | N/A | 20 | 35 | |
| 13?8 - 11?2 | 100 | 50 | N/A | 28 | 45 | |
| B8M Class 2 | Up to 3?4 | 110 | 95 | N/A | 15 | 45 |
| 7?8 - 1 | 100 | 80 | N/A | 20 | 45 | |
| 11?8 - 11?4 | 95 | 65 | N/A | 25 | 45 | |
| 13?8 - 11?2 | 90 | 50 | N/A | 30 | 45 |
A320 Chemical Properties
Element | L7 (AISI 4140) | L43 (AISI 4340) | B8 (AISI 304) | B8M (AISI 316) |
|---|---|---|---|---|
| Carbon | 0.37 - 0.49% | 0.38 - 0.43% | 0.08% max | 0.08% max |
| Manganese | 0.65 - 1.10% | 0.75 - 1.00% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 - 0.35% | 0.15 - 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 - 1.20% | 0.70 - 0.90% | 18.0 - 20.0% | 16.0 - 18.0% |
| Nickel | 1.65 - 2.00% | 8.0 - 11.0% | 10.0 - 14.0% | |
| Molybdenum | 0.15 - 0.25% | 0.20 - 0.30% | 2.00 - 3.00% |