Q:hi, i have a steel block with an unussual composition. does anyone know if this is any particular type?c- .6%, si - .33%, mn - .6%, sulphur - .014%, phosphorous - .013%, ni - 1.69%, Cr, 1.07%, molybdenum - .67%

You have opened a can of worms. Specific types of steel vary not only by composition but by the way they were made, their physical properties and their morphology (microscopic structure). The composition you have given would fit for High Carbon Steel and Medium Carbon Steel. Go to the reference I've given, it allows you to put in 3 of the components of your alloy and then it gives you a list of possibilities. You can open each candidate individually and see the full composition. Hours of fun. :)

Q:How are steel coils used in the manufacturing of pipes?

Steel coils are used in the manufacturing of pipes as they provide the raw material needed for pipe production. The coils are uncoiled and then passed through a series of machines, where they are shaped, welded, and cut to the desired length and diameter. This process allows for efficient and precise pipe manufacturing, ensuring the strength and durability of the final product.

Q:How are steel coils used in the production of automotive suspension systems?

Steel coils are used in the production of automotive suspension systems as they provide the necessary support and cushioning to absorb shocks and vibrations while maintaining stability and control. These coils are typically used in coil spring suspensions, where they are compressed and expand to absorb the impact of road irregularities, ensuring a smooth and comfortable ride for the vehicle occupants.

Q:What are the different coil leveling methods used for steel coils?

Steel coils can be leveled using various methods, each with its own advantages and limitations. Here are some commonly used methods: 1. Roller Leveling: Coils pass through rollers that apply pressure to flatten and level them. This method is effective in reducing coil crown or center buckle and eliminating coil memory. However, it may not be suitable for coils with severe shape defects or variations. 2. Stretch Leveling: Coils are stretched to remove shape defects. Gripper heads hold the edges of the coil while it is stretched. Stretch leveling is particularly effective in correcting crossbow and edge wave defects. However, it may cause elongation and yield loss in the material. 3. Temper Pass: Coils go through temper mill stands, where tension and compression forces are applied. Temper pass leveling improves flatness and removes coil memory. It is commonly used for thinner gauge steel coils but may not be suitable for thicker coils. 4. Corrective Leveling: This method is used for coils with severe shape defects. Skilled operators selectively remove material from specific areas of the coil to correct the shape. Corrective leveling effectively eliminates shape defects and improves flatness but requires significant labor. 5. Tension Leveling: Coils undergo tension forces while passing through pinch rolls. Tension leveling removes coil memory and improves flatness, especially for coils with edge wave defects. However, it may cause elongation and yield loss in the material. These are just a few of the coil leveling methods used for steel coils. The choice of method depends on specific requirements and desired flatness results. Considerations such as material thickness, shape defects, and production capacity are important in selecting the appropriate leveling method.

Q:What is the lifespan of steel coils?

The lifespan of steel coils can vary depending on various factors such as the quality of the steel, the conditions in which they are stored or used, and the maintenance practices employed. However, with proper care and maintenance, steel coils can last for several decades or even longer.

Q:I'm looking to buy the Milano Stiletto, and it uses 1045 steel. I was just wondering whether this will hold up and keep an edge.

Unfortunately, okorder /

Q:What are the challenges in coil leveling for high-strength steel?

One of the main challenges in coil leveling for high-strength steel is the material's inherent strength and hardness. High-strength steel is designed to have superior mechanical properties, which can make it difficult to manipulate and flatten during the leveling process. The high tensile strength and increased yield strength of the steel can cause it to resist deformation, leading to springback or permanent deformation issues. Additionally, the increased hardness of the steel can put more strain on the leveling equipment, potentially leading to wear and tear. Proper equipment selection, precise control of leveling parameters, and advanced process monitoring techniques are required to overcome these challenges and achieve accurate and consistent coil leveling results for high-strength steel.

Q:Can steel coils be recycled?

Yes, steel coils can be recycled. Steel is a highly recyclable material, and recycling steel coils helps to conserve natural resources and reduce environmental impact.

Q:How are steel coils inspected for uniformity?

To ensure uniformity, steel coils undergo a series of visual and mechanical tests. First, the coil's external appearance is carefully examined for any visible defects like dents, scratches, or rust. This is crucial to maintain the coil's integrity and prevent potential issues during further processing. Next, non-destructive testing techniques such as ultrasonic or magnetic particle inspection are used to measure the coil's thickness at various points. This helps identify any variations in thickness that could affect the overall quality and performance of the coil. Precise instruments are also employed to measure the coil's width and ensure it adheres to the required specifications. This is important for compatibility with downstream processes and applications. Furthermore, the weight of the coil is measured to verify if it falls within the specified range. Weighing scales or load cells are typically used for this purpose, ensuring consistent weight that meets the required standards. For internal inspection, steel coils may undergo eddy current testing, a non-destructive method that detects surface and near-surface defects. By utilizing electromagnetic induction, this technique can identify irregularities in the metal, such as cracks, voids, or inclusions. In summary, a comprehensive combination of visual inspections, thickness measurements, width checks, weight verification, and internal testing methods ensures thorough inspection for uniformity in steel coils. These rigorous processes guarantee the quality and reliability of the coils, enabling them to meet industry standards and customer requirements.

Q:I've been looking for lots of info on this steel. Cold Steel uses it now in their knives replacing the AUS-8 steel. I was hoping somebody had a knife with this steel who could give me some real first hand knowledge not just numbers. Thanks!

Before I answer I must let you know that I have been a knife collector for 17 years, and have a great assortment of specialty and antique folding knives. As for your question, I wouldn't worry too much about it. The first answerer is very knowledgeable in this category. But in the real world, the steel chemistry of folding knives will never be as important as that of fixed blades or kitchen knives. The fact that manufacturures go through great lengths to advertise their superior steel is just for sales and bragging rights. When it comes down to it, a pocketknife might be useful, but it is never the best tool for the job. It is a compomised design from the beginning. If you need to cut a steak, a steak knife will do. A box cutter works best on cardboard. A razor works best for shaving, wire cutters best for cutting wire, an axe for chopping wood...I could go on. A pocket knife is never going to perform better than the real thing ( although I do prefer the can openers on Swiss army knives than real can openers). As for self defense, minus the concealability factor, a folding knife sucks compared to a fixed blade. But if you were to pull one out during an extreme circumstance, I doubt anyone is going to be effected by the Rockwell hardness.