SHANDONG LE REN SPECIAL STEEL CO., LTD.
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astm a193 grade b7 Steel Threaded Rod
astm a193 grade b7m threaded rod is kind of threaded rod different from astm a193 grade b7. The differences such as:
Mechanical properties little difference: B7M Threaded Rods has a minimum tensile strength of 690MPa under 4", but B7 is 795MPa min from 2 1/2" - 4". B7M hardness is 235HB max, but B7 hardness is 321HB or 35HRC.
astm a193 grade b7m Threaded Rod we produce is manufactured with rolled threads instead of cut, free from tears or tool marks typically found in cut threads. So the threaded rods are smoother and have less surface imperfections that may cause possible failure in severe service applications.
astm a193 b7 Steel Threaded Bar is used to produce Marine Anchor Bolt, Marine Steel Anchor Bolt, High Strength Marine Anchor Bolt, Steel Anchor Bolts, Stud Anchor Bolt.
1. astm a193 grade b7m threaded rods raw material sae4140 chemical composition:
| C | SI | MN | S/P | CR | MO |
| 0.38-0.45 | 0.15-0.35 | 0.75-1.00 | 0.035(MAX) | 0.80-1.20 | 0.15-0.25 |
2. astm a193 grade b7 threaded rods mechanical property:
| Tensile strength | Yield strength | Elongation | Reduction of area | Hardness |
| 860MPa min | 720MPa min | 16% min | 52% min | 235HB max |
Note: The properties can adjust according to your requirements
3. astm a193 grade b7 threaded rods sizes:
Metric threaded rods: M12 - M64
Imperial threaded rods: 1/2"- 4"
LENGTH: 1M, 2M ,3M, 6M, 12FT or cut to other lengths according to customer's requirement.
Metric threaded rods common sizes:
| M12 | 1.75mm | M36 | 4mm |
| M14 | 2mm | M39 | 4mm |
| M16 | 2mm | M42 | 4.5mm |
| M18 | 2.5mm | M45 | 4.5mm |
| M20 | 2.5mm | M48 | 5mm |
| M22 | 2.5mm | M52 | 5mm |
| M24 | 3mm | M56 | 5.5mm |
| M27 | 3mm | M60 | 5.5mm |
| M30 | 3.5mm | M64 | 6mm |
| M33 | 3.5mm | 8UN |
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Imperial threaded rods common sizes:
| 5/8" | 11UNC | 2 3/8" | 8UN |
| 3/4" | 10UNC | 2 1/2" | 8UN |
| 7/8" | 9UNC | 2 5/8" | 8UN |
| 1" | 8UN | 2 3/4" | 8UN |
| 1 1/8" | 8UN | 2 7/8" | 8UN |
| 1 1/4 | 8UN | 3" | 8UN |
| 1 3/8" | 8UN | 3 1/8" | 8UN |
| 1 1/2" | 8UN | 3 1/4" | 8UN |
| 1 5/8" | 8UN | 3 1/8" | 8UN |
| 1 3/4" | 8UN | 3 1/2" | 8UN |
| 1 7/8" | 8UN | 3 5/8" | 8UN |
| 2" | 8UN | 3 3/4" | 8UN |
| 2 1/8" | 8UN | 3 7/8" | 8UN |
| 2 1/4" | 8UN | 4" | 8UN |
4. Metric threaded rod weight:
| M12 | 0.69kg | M36 | 6.63kg |
| M14 | 0.93kg | M39 | 7.86kg |
| M16 | 1.24kg | M42 | 9.05kg |
| M18 | 1.57kg | M45 | 10.51kg |
| M20 | 1.98kg | M48 | 11.84kg |
| M22 | 2.44kg | M52 | 14.13kg |
| M24 | 2.86kg | M56 | 16.37kg |
| M27 | 3.58kg | M60 | 19.00kg |
| M30 | 4.54kg | M64 | 21.21kg |
| M33 | 5.61kg |
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