Grades of Hot and Cold Rolled Steel Alloys
Lawton Standard is a steel supplier!
Although Lawton Standard is known for Versa-Bar continuous cast iron, a true hydraulic metal and a fantastic cost-effective alternative to steel, we also provide a raw stock of request. Please consult the list below for our available grades of cold-rolled and finished steel for sale from raw stock.
As proud members of The Lawton Standard family, we can now help our customers with almost any metal needs. Contact us to learn more.
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| Hot Rolled Steel Bars | |
|---|---|
| Grade | Description |
| ASTM A36 | Low carbon, general purpose for structural applications. Minimum physical properties of 36,000 psi yield strength and 58,000 psi tensile strength. |
| HR Bars 1117 | Low carbon, high manganese steel. Used in manufacturing parts requiring considerable machining, close tolerances, and a smooth finish. Especially suitable for carburized parts requiring a soft core and high surface hardness. Used for gears, pinions, pins, and ratchets. |
| HR Bars 11L17 | 1117 with the addition of .15% to .35% lead, providing improved machinability without changing the excellent case hardening characteristics of 1117. |
| HR Bars 1045 | Medium carbon steel is used when greater strength and hardness are desired. Can be hammer forged and responds to heat treatment: Suitable for flame and induction hardening. Used in gears, shafts, axles, bolts, studs, and machine parts. |
| HR Bars 1141 | Medium carbon, special quality, manganese steel with improved machinability and a deeper, uniformed heat treatment response than plain carbon steel. |
| Cold Rolled Steel Bars | |
| CR Bars 1018 | Low carbon, medium manganese content. Good hardening properties, fair machinability. Readily brazed and welded. |
| CR Bars 12L14 | Lead-bearing steel with extraordinarily fast machining speeds. Widely used in screw machining work. Hass excellent ductility and fine surface quality. |
| Alloy Bars | |
| Alloy Bars 4140 | A through-hardening chromium molybdenum carbon steel, not subject to temper embrittlement. It is recommended for heavy-duty service. 4140 has high hardenability, good fatigue, abrasion, and impact resistance. It can be successfully nitrided for maximum wear and abrasion resistance. It is deep hardening suitable for severe service characterized by fatigue, abrasion, impact, high-temperature stresses, or a combination of such stresses in small and large sections. |
| Alloy Bars 4340 | A tough, chock-resisting, oil-hardening nickel-chromium-molybdenum steel. In the heat-treated condition, it is the highest combination of tensile and endurance strengths and ductility. Maintains good strength properties at elevated temperatures. The high-depth hardness is reflected in excellent torque properties. Recommended for heavy-duty, high-strength applications. |
| Alloy Bars 8620 | Most widely used case hardening alloy steel, with high core strength and toughness. |
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Further Insights into Grades of Steel Alloys
Understanding the various grades of steel alloys is crucial for selecting the right material for any industrial application. The performance of these alloys is determined by factors such as chemical composition, processing methods, and heat treatment. Our table above details the available hot-rolled, cold-rolled, and alloy steel bars, each engineered to meet specific strength, ductility, and durability requirements.
Key Factors Influencing Steel Alloy Grades
- Chemical Composition: Variations in carbon content and the inclusion of elements like manganese, chromium, nickel, and molybdenum directly impact the alloy's strength, hardness, and resistance to corrosion.
- Processing Methods: Techniques such as hot rolling, cold rolling, and precision machining play a significant role in defining the mechanical properties and finish of the final product.
- Heat Treatment: Processes like annealing, quenching, and tempering adjust the microstructure of steel alloys, optimizing them for particular applications—whether for structural components, automotive parts, or precision machinery.
Practical Applications of Different Grades of Steel Alloys
- Structural Applications: Grades like ASTM A36 and HR Bars 1045 are widely used in construction and structural frameworks due to their balanced strength and flexibility.
- Machined Components: Alloy bars such as 4140 and 4340 provide the necessary toughness and wear resistance required for gears, shafts, and other precision parts.
- Specialized Uses: For projects requiring exceptional durability and resistance to extreme conditions, selecting the right grade steel alloy is essential to ensure long-term performance and safety.
Choosing the Right Grade for Your Project
Selecting the optimal grade steel alloy involves not only reviewing technical specifications but also understanding the environmental and operational demands of your project. Evaluate factors like load requirements, exposure conditions, and fabrication methods to ensure that the chosen material aligns with your performance and cost objectives. Our experienced team is always ready to offer expert advice on which steel alloy grade will best meet your project needs.
By incorporating these additional insights into the grades of steel alloys, we aim to provide a comprehensive resource that not only details available products but also educates users on how to choose the best material for their specific applications.