Ananka Group is a premier ASTM A193 Bolt Manufacturer in India, producing a wide range of high-performance ASTM A193 Grade B8m Fasteners across various dimensions, classes, and specifications.
ASTM A193 Grade B8m Fasteners are crafted from molybdenum-bearing Type 316 stainless steel, offering superior resistance to pitting and crevice corrosion in severe marine and chemical environments. Manufactured in strict accordance with ASTM International Standards, these high-tensile components are essential for pressure vessels, valves, flanges, and fittings across power generation, petrochemical, and desalination facilities.
The ASTM A193 specification covers high-temperature and high-pressure bolting materials. As a trusted B8m Class 1 Nut Manufacturer, we supply Class 1 (Carbide Solution Treated) and Class 2 (Strain Hardened) fasteners. We also manufacture complementary grades such as ASTM A193 Grade B8 Fasteners.
Ananka Group is a certified ASTM A193 Grade B8m Fasteners manufacturer in Mumbai. With precision CNC tooling and complete material traceability, our Grade B8m bolts, nuts, and studs fulfill demanding EPC contractor specifications worldwide.
ASTM A193 Grade B8m Fasteners are meticulously engineered to provide exceptional performance in high-pressure and high-temperature environments. Widely utilized in the power generation industry, as well as for pressure vessels, valves, flanges, and fittings, these fasteners deliver unparalleled durability. Our cutting-edge manufacturing processes have solidified our position as a top-quality B8M Class 1 and Class 2 Fasteners Manufacturer in Mumbai and across India, ensuring every product meets stringent international standards.
| Element | Percentage |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 16.0 – 18.0 |
| Molybdenum (Mo) | 2.00 – 3.00 |
| Grade / Class | Diameter | Tensile Strength (min) | Yield Strength (min) | Elongation (%) | Reduction (%) | Hardness |
|---|---|---|---|---|---|---|
| Grade B8M, Class 1 | All Diameters | 515 MPa | 205 MPa | 30 | 50 | 223 HBW or 96 HRB |
| Grade B8M, Class 2 | M20 and under | 760 MPa | 655 MPa | 15 | 45 | 321 HBW or 35 HRC |
| Grade B8M, Class 2 | M20 to M24, inclusive | 690 MPa | 550 MPa | 20 | 45 | 321 HBW or 35 HRC |
| Grade B8M, Class 2 | M24 to M30, inclusive | 655 MPa | 450 MPa | 25 | 45 | 321 HBW or 35 HRC |
| Grade B8M, Class 2 | M30 to M36, inclusive | 620 MPa | 345 MPa | 30 | 45 | 321 HBW or 35 HRC |
LC (Letter of Credit), TT (Telegraphic Transfer or Wire Transfer), Cheque and others.
ASTM A193 Grade B8m Fasteners are packaged with caution and safety so they reach our clients in perfect condition. Packaging Charges Extra.
Mumbai or Kalamboli ports in Maharashtra, India.
18% GST