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Ramu Fasteners has earned its reputation as a reliable **manufacturer and supplier in Hyderabad** of precision-engineered ASTM A453 GR 660 Class B Nuts, crafted to handle the tough demands of high-temperature and high-strength applications. By employing cutting-edge manufacturing methods and rigorous quality checks, Ramu Fasteners ensures that their nuts meet international standards and customer needs. These top-notch Class B nuts are perfect for critical bolted joints in sectors like petrochemical, power generation, oil & gas, and heavy engineering. With competitive pricing, prompt delivery, and outstanding technical support, Ramu Fasteners has established itself as a trusted source for ASTM A453 Grade 660 Class B fastening solutions in challenging operational settings.
ASTM A453 GR 660 Class B Nuts are crafted from **UNS S66286 precipitation-hardening stainless steel (Alloy A286)**, which boasts a high nickel content (24–27%), chromium (13.5–16%), molybdenum (1.0–1.5%), titanium (1.90–2.35%), and other carefully controlled elements that enhance high-temperature strength and corrosion resistance. These nuts undergo solution treatment and aging to achieve exceptional mechanical properties, featuring a **minimum tensile strength of around 895 MPa (130 ksi)** and a **yield strength of approximately 585 MPa (85 ksi)**, along with impressive ductility, elongation, and hardness—ensuring reliable performance even in harsh service conditions. ([A453Grade660][1])
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS B Nuts | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
ASTM A 453 GR 660 Class B Nuts are essential in high-stress environments due to their exceptional strength and resistance to high temperatures. They are commonly used in aerospace, automotive, and industrial applications where durability and performance are critical. These nuts are ideal for securing components in demanding conditions, such as in gas turbines, pressure vessels, and structural assemblies. Their corrosion resistance and high tensile strength make them suitable for harsh and extreme environments.
ASTM A453 GR 660 Class B Nuts are extensively utilized in situations where **high-strength fastening and high-temperature performance** are essential. They find common application in **pressure vessels, boiler assemblies, flanges, and valve connections** within petrochemical, chemical processing, and power generation industries. Thanks to their unique alloy composition, these nuts consistently deliver reliable performance in **elevated temperature and demanding environments**.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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