Luke Steel, based in Houston, Houstan, is a reliable manufacturer and supplier of top-notch Alloy Steel Gr B7 Washers. These washers are specifically designed for strength, durability, and effective load distribution in critical bolted assemblies. Made in accordance with ASTM A193 standards, they are crafted from hardened alloy steel, ensuring outstanding tensile strength and resistance to both thermal and mechanical stress. Luke Steel provides B7 washers in a variety of sizes, finishes, and custom configurations, serving industries like oil & gas, petrochemical, power generation, and heavy construction. Their products are celebrated for their quality, precision, and dependable performance even in extreme conditions.
Alloy Steel Gr B7 Washers are made from medium carbon alloy steel that includes chromium (0.75–1.20%), molybdenum (0.15–0.25%), carbon (0.37–0.49%), and manganese. These washers undergo a quenching and tempering process to enhance their hardness and strength, achieving a minimum tensile strength of 860 MPa and a yield strength of 720 MPa. Their metallurgical structure provides excellent fatigue resistance, creep strength, and dimensional stability across varying thermal cycles. Thanks to their chemical makeup and heat treatment, Grade B7 washers are perfect for maintaining structural integrity in high-pressure, high-temperature bolting assemblies.
| 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.
You’ll find Alloy Steel Gr B7 Washers commonly used in oilfield equipment, pipeline systems, pressure vessels, refineries, boilers, chemical processing units, and power generation facilities. They play a crucial role in flange connections, valve assemblies, structural joints, and heavy machinery, ensuring even load distribution, preventing loosening, and protecting mating surfaces. These washers are also compatible with B7 bolts and studs, providing exceptional reliability in dynamic and high-stress environments. Their ability to endure heat, pressure, and vibration makes them essential for maintaining safe and secure mechanical connections in critical systems.
Luke 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 Houstan, USA.
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