Marzouk Steel, located in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Alloy Steel Gr B7 washers. These washers are celebrated for their impressive strength, precise engineering, and remarkable durability, making them perfect for tough industrial settings. By employing cutting-edge manufacturing methods and rigorous quality control, Marzouk Steel guarantees that every Gr B7 washer delivers consistent performance and a long lifespan. The company caters to various sectors, including oil and gas, petrochemical, construction, and heavy engineering, providing fastening components that excel in load distribution, mechanical stability, and joint integrity.
The Alloy Steel Gr B7 washers are crafted from chromium-molybdenum alloy steel with a carefully controlled carbon content, ensuring they achieve high strength and toughness. These washers boast impressive mechanical properties, featuring a tensile strength of about 860–1,040 MPa, a yield strength of around 720–860 MPa, and an elongation of 8–12%. They undergo heat treatment to enhance hardness, fatigue resistance, and wear resistance, allowing Gr B7 washers to maintain their shape and resist deformation even under heavy loads and high-pressure situations.
| Specifications | : | ASTM A 194 ASME SA 194 |
| Standard | : | IS, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring. |
| Alloy Steel GR 7 | C | Mn | P | S | Si | Mo | Cr |
| 0.37-0.49% | 0.65-1.10% | 0.04% | 0.04% | 0.15-0.035% | 0.15-0.25% | 0.75-1.20% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
|---|---|---|---|---|---|
| B7 | 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.
Alloy Steel Gr B7 washers find extensive use in industries such as oil and gas, petrochemical, refining, construction, and power generation. They play a crucial role in evenly distributing loads in bolted joints, preventing surface damage, and minimizing loosening due to vibrations or thermal cycling. With their outstanding strength, wear resistance, and durability, these washers significantly improve the reliability and longevity of fastening assemblies. Engineers and industrial operators trust Alloy Steel Gr B7 washers for secure and long-lasting fastening solutions, especially in high-stress and high-temperature environments.
Marzouk 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 Tunis, Tunisia.
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