Yousef Steel proudly stands as a top manufacturer and supplier of high-quality Alloy Steel Gr B16 Fasteners, based in Riyadh, Saudi Arabia. Crafted to meet ASTM A193 standards, our B16 fasteners are built to thrive in high-temperature and high-pressure settings, offering remarkable strength and durability. Perfect for tough industrial applications, Yousef Steel guarantees that every fastener is made with precision, utilizing premium materials and cutting-edge heat treatment techniques. Renowned across various sectors like oil & gas, petrochemical, power generation, and heavy machinery, Yousef Steel is your trusted partner for top-notch alloy fasteners throughout Saudi Arabia and the GCC.
Alloy Steel Gr B16 Fasteners are made up of a blend of carbon, manganese, phosphorus, sulfur, silicon, chromium (0.40–0.60%), molybdenum (0.45–0.65%), and vanadium (0.28–0.33%). These alloying components provide impressive tensile strength, thermal stability, and outstanding resistance to corrosion and creep. After undergoing quenching and tempering, Gr B16 fasteners reach a tensile strength of about 860–1030 MPa and a yield strength of roughly 725 MPa. Their mechanical performance is fine-tuned for high-temperature conditions, especially in high-pressure piping systems and components that face continuous heat and mechanical stress.
Specification :Â ASTM A 193 ASME SA 193
Standard :Â DIN, ASTM, BS and all International Standards
Length :Â 3 mm to B16 mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Types :Â Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Socket Head Cap Screw, Washers, Spring Washers, Studs, Anchors
| 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 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hexagon Bolts / Set Screws | Stud Bolts | Hexagon Nuts | Socket Capscrews |
|---|---|---|---|
DIN 931 | BS4882 | DIN 934 | DIN 912 |
DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
BS 1768 | Â | BS 1769 | DIN 7984 |
UNI 5731 | Â | BS 1083 | ANSI B18.3 |
UNI 5739 | Â | BS 3692 | ISO 4762 |
ISO 4014 | Â | ISO 4032 | UNI 5931 |
ISO 4017 | Â | ISO 4033 | BS 2470 |
BS 1769 | Â | ANSI B18.2.2 | BS 4168 |
BS 3692 | Â | Â | Â |
ANSI B18.2.1 | Â | Â | Â |
Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
DIN 913 | DIN 963 | DIN 938 | DIN 125 |
DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
DIN 915 | BS 4168 | DIN 2510 | BS 4320 |
DIN 916 | BS 1981 | BS 4439 | BS 3410 |
DIN 551 | BS 483 | BS 2693 | Â |
DIN 553 | BS 2470 | Â | Spring Washers |
DIN 438 | Â | Â | DIN 127 |
BS 4168 | Â | Â | BS 4464 |
 |  |  | BS 1802 |
Alloy Steel Gr B16 Fasteners find their primary use in high-temperature and high-pressure environments typical of the oil & gas, petrochemical, and power generation sectors. They are perfect for applications in reactors, boilers, heat exchangers, high-pressure piping systems, and flanged connections. Designed to uphold structural integrity and performance under extreme stress and thermal cycling, B16 fasteners boast excellent mechanical properties, making them ideal for critical service conditions.
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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