Hotline
+86-136 8495 9862
Email:cennia@szmizhi.com
Add::104,Building 27,Third Industrial Zone, Longxi Community,Longgang District,Shenzhen,China.
Coil Forming & Handling Equipment
Surface Treatment Equipment
Solutions
Application
About Us

Welcome to MIZHI
For consultation/feedback, please call the service hotline: +86-136 8495 9862 Email:cennia@szmizhi.com
High carbon steel shot offers several distinct advantages over alternative peening media, making it the preferred choice for applications requiring deep, uniform compressive stress and consistent performance. These advantages translate to improved component durability, reduced maintenance costs, and enhanced process efficiency.
Deeper compressive stress layers are achievable with high carbon steel shot due to its high hardness and density. When the shot impacts the workpiece surface, it creates indentations that generate compressive stress in the underlying material. The depth of this stress layer—typically 0.1–0.5 mm for most peening applications—is critical for fatigue resistance, as it counteracts the tensile stresses that cause crack initiation and propagation. High carbon steel shot, with its ability to deliver higher impact energy, can achieve stress depths 20–30% greater than low carbon steel shot or glass beads. For example, when peening a spring steel leaf spring, high carbon shot induces a compressive stress layer 0.3 mm deep, compared to 0.2 mm with low carbon shot, significantly extending the spring’s fatigue life.
Uniform stress distribution across the workpiece surface is ensured by the shot’s sphericity and size uniformity. Unlike angular media, which creates localized highstress areas, spherical high carbon steel shot delivers consistent indentation, resulting in a more even stress profile. This is particularly important for components with complex geometries, such as gear teeth or turbine blade roots, where uneven stress distribution can lead to premature failure. Studies have shown that components peened with high carbon steel shot exhibit 15–25% lower stress variation compared to those peened with angular media, leading to more predictable fatigue performance.
Long media life reduces replacement frequency and costs. High carbon steel shot’s toughness allows it to withstand repeated impacts without breaking down, with a typical service life of 10–20 times that of cast iron shot or glass beads. In highvolume peening operations—such as automotive suspension component production—this translates to significant savings in media costs. For example, a peening machine processing 10,000 parts per day may require 50 kg of high carbon steel shot per week, compared to 250 kg of cast iron shot, reducing both material costs and the labor required for media replacement.
Reduced workpiece contamination is a result of the shot’s low breakdown rate. Fines generated from media wear can adhere to the workpiece surface, causing defects in subsequent processes like painting or coating. High carbon steel shot produces 70–80% fewer fines than brittle media, minimizing the need for postpeening cleaning. This is especially critical in aerospace applications, where even small contaminants can compromise component performance. For example, turbine blades peened with high carbon steel shot require 50% less cleaning time than those peened with glass beads, improving process efficiency.
Compatibility with a wide range of materials makes high carbon steel shot versatile. It is effective for peening carbon steels, alloy steels, stainless steels, and even some nonferrous metals like titanium alloys. This versatility eliminates the need for multiple media types in facilities processing diverse components, simplifying inventory management and reducing setup times. For example, a job shop can use the same high carbon steel shot to peen both carbon steel bolts and stainless steel fittings, avoiding the cost and downtime of media changes.