Alloy Steel Gr B16 Bolts are tough, high-strength fasteners crafted for the most demanding industrial, mechanical, and structural tasks. Made from top-quality alloy steel that includes elements like chromium and molybdenum, these bolts deliver outstanding tensile strength, hardness, and resistance to wear, corrosion, and fatigue. They come with precise threading, consistent dimensions, and smooth finishes, ensuring a secure fit, reliable load distribution, and long-lasting performance. Gr B16 Bolts are commonly found in industries such as oil and gas, petrochemical, power generation, and heavy engineering, providing safe and durable fastening solutions even in high-pressure and high-temperature settings.
Alloy Steel Gr B16 Bolts are high-strength bolts that are used in high-temperature and high-pressure applications. The bolts generally have 0.33-0.38% Carbon, 0.75-1.00% Manganese, 0.15-0.35% Silicon, 0.80-1.30% Chromium and 0.25-0.35% Molybdenum. Which increase their tensile strength, hardness, and corrosion resistance. Heat-treated for higher mechanical properties they are extremely durable and reliable in harsh conditions. Their tough construction provides firm fastening, making them perfect for critical industrial applications that need high performance in extreme conditions.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B16 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts |
| Alloy Steel B16 | C | Mn | P | S | Si | Ni | Cr |
| 0.15 max | 1.00 max | 0.040 | 0.030 | 1.00 max | – | 11.50-13.50 |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
|---|---|---|---|---|---|
| B16 | Up to 2-1/2 | 125 | 105 | 18 | 50 |
| 2-5/8 – 4 | 110 | 95 | 17 | 45 | |
| 4-1/8 – 7 | 100 | 85 | 16 | 45 |
| Dia | Minimum Temperature ° F (°C) | Tensile Strength min, ksi ( MPa) | Yield Strength. min, 0.2% offset, Ksi ( MPa) | Elongation in 4D min % | Reduction of Area min % | Hardness max |
|---|---|---|---|---|---|---|
| 2 1/2″ and under | 1200(650) | 125(860) | 105(725) | 18 | 50 | 321HB or 35 HRC |
| over 21/2″ to 4″ | 1200(650) | 110(760) | 95(655) | 17 | 45 | 302HB or 33 HRC |
| over 4″ to 7″ | 1200(650 ) | 100(690) | 85(586) | 16 | 45 | 227HB or 29 HRC |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
These bolts are primarily made of iron, combined with carbon, chromium, molybdenum, and a few trace elements to boost their mechanical performance. This unique blend gives them impressive tensile and yield strength, toughness, and the ability to resist deformation under load. On a mechanical level, they excel in shear strength, impact resistance, and dimensional stability. Heat treatment enhances their hardness, wear resistance, and overall durability, making them perfect for critical industrial applications.
You’ll often find Alloy Steel Gr B16 Bolts in pipelines, flanged joints, pressure vessels, heavy machinery, and structural assemblies. They’re particularly suited for situations that demand secure, long-lasting fastening in high-pressure, high-temperature, and chemically challenging environments. With their blend of strength, corrosion resistance, and reliability, Alloy Steel Gr B16 Bolts are the go-to choice for industrial and engineering applications where safety and performance are absolutely essential.
Chetak Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Hyderabad, India.
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