Aatir Steel, located in Cairo, Egypt, is a trusted name in the manufacturing and supply of Alloy Steel Grade B7M Bolts, designed to excel in harsh, corrosive, and high-pressure settings where precise hardness and improved ductility are essential. These bolts are crafted in line with ASTM A193 standards and are particularly suited for sour gas and hydrogen sulfide (H₂S) environments, commonly found in petrochemical and offshore applications. Aatir Steel guarantees that each B7M bolt goes through thorough heat treatment and quality checks, ensuring that clients receive products that meet stringent performance and safety criteria across challenging industries.
Alloy Steel Gr B7M Bolts are composed of chromium-molybdenum steel, typically containing 0.37–0.49% carbon, 0.80–1.10% chromium, 0.15–0.25% molybdenum, along with trace amounts of manganese and silicon. Unlike standard B7 bolts, B7M bolts are heat-treated to achieve a lower hardness range, with a maximum hardness usually capped at 235 HB or 99 HRB. This softer tempering enhances their resistance to stress corrosion cracking, particularly in sour service conditions. Even with the reduced hardness, B7M bolts maintain impressive mechanical integrity, providing adequate tensile and yield strength for critical bolting tasks, while also delivering improved toughness and ductility.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B7M 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 B7M | C | Mn | P | S | Si | Cr | Mo |
| 0.37-0.49 | 0.65-1.10 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
|---|---|---|---|---|---|
| B7M | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Jaxon Steel is a trusted manufacturer and supplier of high-quality Alloy Steel Gr B7M Bolts in Cairo, Egypt. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. Contact us today for all your Alloy Steel Gr B7M Bolts needs!
Alloy Steel Grade B7M Bolts find extensive use in the oil and gas sector, refineries, chemical processing facilities, and offshore drilling operations—especially in scenarios where exposure to corrosive agents like hydrogen sulfide is prevalent. These bolts are perfect for flanged joints, valves, pressure vessels, and pipeline assemblies that operate under high pressure and moderate to high temperatures. The blend of controlled hardness and corrosion resistance 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.
Copyright 2025 Aatir Steel. All rights reserved
