Alloy Steel Fasteners are high-strength mechanical components designed for high-temperature, high-pressure, and heavy-duty service conditions. These fasteners are manufactured using alloying elements such as chromium, molybdenum, and manganese to achieve superior tensile strength, hardness, corrosion resistance, and creep resistance.
Alloy Steel Fasteners are widely used in power plants, refineries, petrochemical units, oil & gas pipelines, and critical industrial assemblies where reliability, durability, and long service life are essential.
Alloy Steel Fasteners are manufactured in accordance with ASTM and ASME standards such as ASTM A193, ASTM A194, ASTM A320, and ASTM A354. Commonly supplied grades include B6, B7, B7M, B16, 2, 2H, 2HM, Grade 6, Grade 7, and Grade 7M, offering excellent performance in high-stress and elevated temperature environments.
Alloy Steel Fastener Manufacturer in India | ASTM A193 B7, B7M, B16, Grade 7 & 7M Bolts Supplier
Applications of Alloy Steel Fasteners
| ● Oil & Gas Refineries and Pipelines |
| ● Power Generation & Thermal Power Plants |
| ● Petrochemical & Chemical Processing Plants |
| ● Pressure Vessels, Boilers & Heat Exchangers |
| ● Offshore, Marine & Heavy Engineering Industries |
| ● Structural & High-Temperature Industrial Assemblies |
Specification Table of Alloy Steel Fasteners
| Standard | ASTM A193, ASTM A194, ASTM A320, ASTM A354, ASME SA193 |
|---|---|
| Grades | B6, B7, B7M, B16, 2, 2H, 2HM, GR 6, GR 7, GR 7M |
| Fastener Types | Bolts, Stud Bolts, Nuts, Threaded Rods, Anchor Bolts |
| Size Range | M6 to M100 / 1/4″ to 4″ |
| Finish | Black, Hot Dip Galvanized, Zinc Plated, PTFE, Xylan, Cadmium |
Alloy Steel Fastener Grades (Sub-Products)
| ● Alloy Steel B6 Bolts – Heat resistant fasteners for elevated temperature service |
| ● Alloy Steel B7 Bolts – High tensile fasteners for pressure applications |
| ● Alloy Steel B7M Bolts – Controlled hardness fasteners for sour service |
| ● Alloy Steel B16 Bolts – High strength fasteners for extreme temperatures |
| ● Alloy Steel 2 & 2H Bolts – Heavy hex fasteners for structural use |
| ● Alloy Steel 2HM Bolts – Modified grade for higher strength requirements |
| ● Alloy Steel Grade 6 Bolts – Medium carbon alloy fasteners |
| ● Alloy Steel Grade 7 Bolts – Quenched & tempered high strength fasteners |
| ● Alloy Steel Grade 7M Bolts – Low hardness fasteners for corrosive environments |
Mechanical Properties (Typical)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation % |
|---|---|---|---|
| ASTM A193 B7 | 720 | 860 | 16 |
| ASTM A193 B7M | 550 | 690 | 16 |
| ASTM A193 B16 | 850 | 1030 | 16 |
| ASTM A354 Grade 7 | 720 | 900 | 14 |