Yousef Steel stands out as a reliable manufacturer and supplier of top-notch Alloy Steel Gr B6 Fasteners, proudly based in Riyadh, Saudi Arabia. With a solid reputation for providing durable and precisely engineered fastening solutions, Yousef Steel serves a variety of industrial sectors, including oil & gas, petrochemical, power generation, and construction. Our Gr B6 fasteners are crafted in line with ASTM standards, guaranteeing exceptional mechanical strength and resistance to corrosion. Built to endure high-stress and high-temperature conditions, Yousef Steel’s fasteners are trusted in critical applications throughout Saudi Arabia and the wider GCC region.
Alloy Steel Gr B6 Fasteners are crafted from chromium-molybdenum alloy steel, featuring around 12% chromium, which boosts their resistance to corrosion and oxidation. These fasteners undergo heat treatment to strike the perfect balance between strength and hardness. They typically deliver tensile strength between 515 and 860 MPa, with a minimum yield strength of 205 MPa. Renowned for their outstanding mechanical performance at elevated temperatures, Gr B6 fasteners maintain their shape and resist deformation under load, making them perfect for high-pressure, high-temperature settings and crucial bolted connections.
Specification :Â ASTM A193 / ASME SA193
Dimension :Â DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
Size Range :Â M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length :Â 3 mm to 200 mm
| Alloy Steel B6 | C | Mn | Si | P | S | Co | Cr |
| 0.15 max | 1.00 max | 1.00 max | 0.040 | 0.030 | – | 11.50-13.50 |
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) |
| 666 (≥) | 997 (≥) | 42 | 14 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 121 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
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Hexagon Bolts / Set Screws |
Stud Bolts |
Hexagon Nuts |
Socket Capscrews |
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DIN 931 |
BS4882 |
DIN 934 |
DIN 912 |
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DIN 933 |
DIN 976 |
BS 1768 |
DIN 6912 |
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BS 1768 |
BS 1769 |
DIN 7984 |
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UNI 5731 |
BS 1083 |
ANSI B18.3 |
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UNI 5739 |
BS 3692 |
ISO 4762 |
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ISO 4014 |
ISO 4032 |
UNI 5931 |
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ISO 4017 |
ISO 4033 |
BS 2470 |
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BS 1769 |
ANSI B18.2.2 |
BS 4168 |
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BS 3692 |
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ANSI B18.2.1 |
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Socket & Slotted Set Screws |
Socket & Slotted Countersunk Screws |
Studs |
Washers |
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DIN 913 |
DIN 963 |
DIN 938 |
DIN 125 |
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DIN 914 |
DIN 7991 |
DIN 939 |
DIN 9021 |
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DIN 915 |
BS 4168 |
DIN 2510 |
BS 4320 |
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DIN 916 |
BS 1981 |
BS 4439 |
BS 3410 |
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DIN 551 |
BS 483 |
BS 2693 |
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DIN 553 |
BS 2470 |
Spring Washers |
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DIN 438 |
DIN 127 |
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BS 4168 |
BS 4464 |
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BS 1802 |
Alloy Steel Gr B6 Fasteners find extensive use in industries where strength, temperature resilience, and corrosion protection are vital. In the oil & gas sector, they are utilized in flanged connections, heat exchangers, pressure vessels, and pipeline systems. Power plants rely on them for boilers, turbines, and high-temperature piping systems. In the petrochemical and refinery industries, Gr B6 fasteners ensure secure connections in reactors and essential process equipment. Their remarkable durability also makes them ideal for various demanding applications.
Yousef 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 Riyadh, Saudi Arabia.
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