ASTM A453 Grade 662
ASTM A453/A453M Grade 662 Bolts, Stud Bolts, Nuts & Washers
- Introduction
- Tensile Class
- Chemical Composition
- Mechanical Properties
- Heat Treatment
- Stress Rupture Requirement
- Marking Requirement
ASTM A453/A453M Grade 662 Class A & Class B Stainless Steel Bolting for High Temperature Applications
We offer precisely made Stud Bolts, Hex Bolts, Heavy Hex Bolts, Socket Head Cap Screws, Threaded Rods, Nuts & Washers as per ASTM A453 Grade 662 Class A and B. We produce these Grade 662 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 662 (UNS S66220) for quick manufacturing and shorter delivery periods. These ASTM A453 Grade 662 Bolts are supplied with EN 10204 Type 3.1 MTC. We offer Rupture Test Facility for sufficient quantity order.
ASTM A453 Grade 662 Tensile Class
| Grade 662 | Class A | Class B |
ASTM A453 Grade 662 Chemical Composition
| Element | |
|---|---|
| Content % | |
| Grade 662 UNS S66220 |
|
| Carbon | 0.08 max |
| Manganese | 0.40 - 1.00 |
| Phosphorus | 0.04 max |
| Sulfur | 0.03 max |
| Silicon | 0.40 - 1.00 |
| Nickel | 24.00 - 28.00 |
| Chromium | 12.00 - 15.00 |
| Molybdenum | 2.00 - 3.50 |
| Tungsten | --- |
| Titanium | 1.80 - 2.10 |
| Columbium* | --- |
| Aluminum | 0.35 max |
| Vanadium | --- |
| Boron | 0.001 - 0.010 |
| Copper | 0.50 max |
* Or Columbium plus Tantalum
ASTM A453 Grade 662 Mechanical Properties
| 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 662 | A | 130 | 895 | 85 | 585 | 15 | 18 | 248-321 | 24 HRC | 35 HRC |
| Grade 662 | B | 125 | 860 | 80 | 550 | 15 | 18 | 248-321 | 24 HRC | 35 HRC |
ASTM A453 Grade 662 Heat Treatment Requirements
| Grade | Class | Solution Treatment | Hardening Treatment |
|---|---|---|---|
| Grade 662 | A | 1800 +/- 25° F [980 +/- 14°C], hold 2 hr and liquid quench | 1350 to 1400° F [730 to 760°C], hold 20 hr, furnace cool to 1200 +/- 25°F [650 +/- 14°C], hold 20hr, air cool |
| Grade 662 | B | 1950 +/- 25° F [1065 +/- 14°C], hold 2 hr and liquid quench | 1350 to 1400° F [730 to 760°C], hold 20 hr, furnace cool to 1200 +/- 25°F [650 +/- 14°C], hold 20hr, air cool |
ASTM A453 Grade 662 Stress Rupture Requirements
| Grade | Class | Test Temperature | Stress, Min | Time to Rupture, min, hA | Elongation, min, % | ||
|---|---|---|---|---|---|---|---|
| °F | °C | Ksi | Mpa | ||||
| Grade 662 | A and B | 1200 | 650 | 55 | 380 | 100 | 5 |
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.
ASTM A453 Grade 662 Marking Requirements
| Grade | Class A | Class B | Class C | Class D |
|---|---|---|---|---|
| Grade 662 | FB 662A | FB 662B |
