Chetak Steel, based in Hyderabad, stands out as a dependable manufacturer and supplier of top-notch Alloy Steel Gr B7M Washers. Renowned for their precision in manufacturing, unwavering quality, and strict compliance with industry standards, this company caters to vital sectors like oil & gas, petrochemicals, power generation, and heavy engineering. With state-of-the-art production facilities and rigorous quality control measures, Chetak Steel guarantees that each Gr B7M Washer aligns with ASTM A193 / A194 specifications and meets customer expectations. These washers are expertly crafted for high-pressure and high-temperature applications, where controlled hardness and reliability are crucial. Chetak Steel’s dedication to durability, safety, and prompt delivery makes them a trusted ally for industrial fastening solutions.
The Alloy Steel Gr B7M Washers are made from chromium-molybdenum alloy steel, featuring a carefully controlled chemical composition and hardness. Typically, they include carbon, chromium (0.80–1.10%), molybdenum (0.15–0.25%), and manganese to enhance strength and toughness. Mechanically, B7M washers undergo heat treatment to achieve a lower hardness compared to standard B7, which improves ductility and resistance to stress corrosion cracking. They deliver outstanding tensile strength, controlled yield properties, and dependable performance in high-pressure and high-temperature scenarios, particularly in sour service environments.
| Specifications | : | ASTM A 193 ASME SA 193 |
| 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 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.
Alloy Steel Gr B7M Washers are a go-to choice for applications that demand high reliability and precise mechanical properties. You’ll often find them in oil and gas pipelines, refineries, petrochemical plants, and offshore platforms, particularly in sour service conditions. These washers work hand-in-hand with B7M bolts and studs in flange connections, valves, pumps, and pressure vessels. Industries like power generation and chemical processing count on them for secure and long-lasting fastening solutions. Thanks to their controlled hardness, strength, and resistance to stress corrosion cracking, Gr B7M washers are perfect for safety-critical and high-pressure industrial settings.
Chetak 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 Hyderabad, India.
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