Aatir Steel, based in Cairo, Egypt, is a reliable manufacturer and supplier of top-notch Alloy Steel Grade B6 Fasteners, crafted to meet the demanding needs of industries that prioritize strength, corrosion resistance, and long-lasting durability. These fasteners are produced in line with ASTM A193 standards and are mainly utilized in settings that experience moderate to high temperatures and corrosive conditions. Aatir Steel employs rigorous quality control and cutting-edge production methods to guarantee that each fastener adheres to international performance and reliability standards, making them a go-to choice in fields like chemical processing, oil and gas, marine, and energy.
Alloy Steel Gr B6 Fasteners are constructed from a ferritic stainless steel alloy, specifically AISI Type 410, which includes around 11.5–13.5% chromium, along with carefully balanced amounts of carbon, manganese, phosphorus, sulfur, and silicon. This unique composition offers remarkable resistance to scaling and oxidation, as well as decent corrosion resistance in mildly aggressive environments. In terms of mechanical properties, B6 fasteners boast a minimum tensile strength of 515 MPa and a yield strength of at least 205 MPa. They undergo heat treatment to boost hardness and strength, making them ideal for bolting applications that require both toughness and corrosion resistance.
Specification : ASTM A193 / ASME SA193
Dimension : DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
Size Range : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length : 3 mm to 200 mm
| Alloy Steel B7 | C | Mn | Si | P | S | Mo | Cr |
| 0.08-0.15 | 1.00 max | 1.00 max | 0.040 | 0.030 | 0.15-0.25 | 11.50-13.50 |
| Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
| Grade B7 | M64 and under | 860 | 720 | 16 | 50 | 321 HBW or 35 HRC |
| Over M64 to M100 | 795 | 655 | 16 | 50 | 321 HBW or 35 HRC | |
| Over M100 to M180 | 690 | 515 | 18 | 50 | 321 HBW or 35 HRC |
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 |
You’ll find Alloy Steel Grade B6 Fasteners commonly used in heat exchangers, pumps, valves, pressure vessels, and other equipment that operates in steam, water, and mildly corrosive chemical environments. These fasteners are particularly well-suited for applications in power generation plants, refineries, and marine settings where moderate corrosion resistance and high mechanical strength are crucial. Their ability to maintain structural integrity under thermal stress makes them a reliable choice for demanding applications.
Aatir 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 Cairo, Egypt.
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