We offer precisely made Stud Bolts, Hex Bolts, Heavy Hex Bolts, Socket Head Cap Screws, Threaded Rods, Nuts & Washers as per ASTM A453 Grade 651 Class A and B. We produce these Grade 651 Bolts from 3/8" to 4" in imperial and upto M100 in metric sizes. Larger size bolts can be made to order as per request. We also undertake custom made boltings in A453 as per drawing. We stock premium and surplus bar stock in Grade 660 (UNS S63198) for quick manufacturing and shorter delivery periods. These ASTM A453 Grade 651 Bolts are supplied with EN 10204 Type 3.1 MTC. We offer Rupture Test Facility for sufficient quantity order.
| Property | Discription |
|---|---|
| Class A | ... |
| Class B | ... |
| Element | |
|---|---|
| Content % | |
| Grade 651 UNS S63198 | |
| Carbon | 0.28 - 0.35 |
| Manganese | 0.75 - 1.50 |
| Phosphorus | 0.04 max |
| Sulfur | 0.30 max |
| Silicon | 0.30 - 0.80 |
| Nickel | 8.00 - 11.00 |
| Chromium | 18.00 - 21.00 |
| Molybdenum | 1.00 - 1.75 |
| Tungsten | 1.00 - 1.75 |
| Titanium | 0.10 - 0.35 |
| Columbium* | 0.25 - 0.60 |
| Copper | 0.50 max |
* Or Columbium plus Tantalum
| Grade | Class | Tensile Strength | Yield Strength | Elongation in 4D, min, % |
Reduction of Area, min, % |
Brinell Hardness Number |
Approximate Rockwell Hardness, B & C |
|||
|---|---|---|---|---|---|---|---|---|---|---|
| Ksi | Mpa | Ksi | Mpa | min | max | |||||
| Grade 651 | A | 100 | 690 | 70A 60B |
485 415 |
18 | 35 | 217-277 | 95 HRB | 29 HRC |
| Grade 651 | B | 95 | 655 | 60A 50B |
415 345 |
18 | 35 | 212-269 | 93 HRB | 28 HRC |
| Grade | Class | Solution Treatment | Hardening Treatment |
|---|---|---|---|
| Grade 651 | A | Hot-cold worked at 1200°F [650°C] min with 15% reduction in cross sectional area, stress relief anneal at 1200°F [650°C] min or 4 hr, min | |
| Grade 651 | B | Hot-cold worked at 1200°F [650°C] min with 15% reduction in cross sectional area, stress relief anneal at 1350°F [730°C] min or 4 hr, min |
| Grade | Class | Test Temperature | Stress, Min | Time to Rupture, min, hA | Elongation, min, % | ||
|---|---|---|---|---|---|---|---|
| °F | °C | Ksi | Mpa | ||||
| Grade 651 | A and B | 1200 | 650 | 40 | 275 | 100 | 5 |
Note : The combination bar specimen shall be tested continuously at the temperature and at the minimum stress specified or at a greater stress and shall rupture in a time not less than than specified.
| Grade | Class A | Class B |
|---|---|---|
| Grade 651 | FB 651A | FB 651B |