Luke Steel, a well-respected manufacturer and supplier based in Houston, Houstan, specializes in high-quality Alloy Steel Gr B7M Screws. These screws are specifically designed for use in harsh, corrosive environments and high-pressure situations where controlled strength is essential. Crafted to meet ASTM A193 standards, B7M screws are tempered and stress-relieved, ensuring they perform reliably while offering improved ductility and resistance to corrosion. Luke Steel provides a diverse selection of sizes, threads, and surface finishes to satisfy the demanding needs of industries like chemical processing, oil & gas, and power generation. With a focus on precision engineering and quality assurance, Luke Steel is committed to delivering trustworthy fastening solutions for critical applications.
Alloy Steel Gr B7M Screws are made from a blend of chromium-molybdenum steel, which includes carbon (0.37ā0.49%), manganese, chromium (0.75ā1.20%), and molybdenum (0.15ā0.25%). These screws undergo a thorough heat treatment process, followed by tempering and stress-relief, which helps to lower hardness while enhancing corrosion resistance. They boast impressive mechanical properties, including a minimum tensile strength of 690 MPa and a yield strength of 515 MPa, along with improved elongation and ductility. Specifically designed for use in sour gas or hydrogen sulfide (HāS) environments, B7M screws have a lower hardness compared to B7, making them ideal for critical applications that require controlled strength.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | IS, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 ā M56 | 3/6ā³ to 2ā³ | Custom Sizes |
| Type | : | Hex Head Screw, Socket Head Cap Screw, Socket Set Screws, Anchor Screw, Blind Rivet, Concrete screw, Threaded Screw, Steel Shoulder Screw, Panel Screw, Machine Screw. |
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 ScrewsĀ consistĀ ofĀ molybdenumĀ andĀ chromium,Ā whichĀ increaseĀ theirĀ hardness,Ā strength, and resistance to high temperatures. They are quenched and temperedĀ and then come upĀ toĀ ASTM A193 standards and areĀ treatedĀ furtherĀ toĀ reduceĀ their hardnessĀ andĀ areĀ thusĀ suitable for corrosiveĀ atmospheres. These screwsĀ haveĀ a minimum tensile strength of 100 ksi and yield strength of 75 ksi, withĀ favorableĀ elongation properties. The controlled hardnessĀ featuresĀ themĀ asĀ perfectĀ forĀ applicationĀ in pressure systems,Ā whereĀ toughness and resilienceĀ areĀ impartedĀ under severeĀ operating conditions.
Alloy Steel Gr B7M Screws find extensive use in pressure vessels, valves, flanges, and piping systems that operate in sour service environments, such as petrochemical plants, oil & gas refineries, offshore rigs, and chemical processing facilities. Their reduced hardness makes them particularly suitable for applications that are at risk of sulfide stress cracking or hydrogen embrittlement. These screws provide secure and long-lasting bolted connections in equipment that faces corrosive media, high pressure, and fluctuating temperatures. B7M screws are the go-to choice for applications that demand a perfect balance of strength, ductility, and environmental resistance in challenging industrial settings.
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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