ASTM A453 Grade 660 Class B Stud Bolts
BS2399, 1.4980, JIS660, 660, S66286, X6NICRTIMOV26-15
ASTM A453 Grade 660 Class B Stud Bolts are Iron Based Super Alloy bolts manufactured from iron-nickel-chromium alloy with additions of molybdenum and titanium. A453 660 Class B Stud Bolts maintain good strength and oxidation resistance at temperatures up to 1300ºF. Torqbolt is a prominent A453 grade 660 class b stud bolts supplier in India.
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ASTM A453 Grade 660 Class B Bolting Types
| Specification | Grade | UNS No. | CLASS | Type | |||
|---|---|---|---|---|---|---|---|
| ASTM A453 | Grade 660 | S66286 | Class B | M1 | M2 | R1 | R2 |
ASTM A453 Grade 660 Class B Stud Bolts Properties
ASTM A453 Grade 660 Class B Stud Bolts Chemical Requirements
| Grade | UNS Number | Elements | C | Mn | P | S | Si | Ni | Cr | Mo | W | Ti | Nb A | Al | V | B | Cu |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A453 Grade 660 | S66286 | Content, % | 0.08 max | 2.00 max | 0.040 max | 0.030 max | 1.00 max | 24.0-27.0 | 13.5-16.0 | 1.00-1.50 | ... | 1.90-2.35 | ... | 0.35 max | 0.10-0.50 | 0.001-0.010 | ... |
| Product Analysis Variation, Over or Under, % | 0.01 over | 0.04 | 0.005 over | 0.005 over | 0.05 | 0.2 | 0.2 | 0.05 | ... | 0.05 | ... | 0.05 over | 0.03 | 0.0004 under to 0.001 over | ... |
ASTM A453 Grade 660 Class B Stud Bolts Mechanical Requirements
| Grade | Class | Tensile Strength, min | Yield Strength (0.2 % Offset), min | Elongation in 4× Diam, min, % | Reduction of Area, min, % | Brinell Hardness Number | Approximate Rockwell Hardness, B and C | |||
|---|---|---|---|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | min | max | |||||
| ASTM A453 Grade 660 | B | 130 | 895 | 85 | 585 | 15 | 18 | 248-341 | 24 HRC | 37 HRC |
ASTM A453 Grade 660 Class B Stress Rupture Properties
| Grade | Class | Test Temperature, °F [°C] | Stress, min | Time to Rupture, min, hA | Elongation, min, % | |
|---|---|---|---|---|---|---|
| ksi | MPa | |||||
| ASTM A453 Grade 660 | B | 1200 [650] | 56 | 385 | 100 | 5 |
ASTM A453 Grade 660 Class B Heat Treatment
Annealing & Ageing Cycles
| Grade Symbol | Class | Solution Treatment | Hardening Treatment |
|---|---|---|---|
| ASTM A453 Grade 660 | B | 1800 ± 25 °F [980 ± 14 °C], hold 1 h, min, and liquid quench | 1325 ± 25 °F [720 ± 14 °C], hold 16 h, air cool |