High Carbon Steel Shot

High Carbon Steel Shot from Shandong Haishan Industrial Technology is a spherical metal abrasive widely used in industrial surface preparation. It is produced from high-quality high-carbon steel through melting, atomization, heat treatment, and precise screening. The result is a product with regular spherical particles, uniform hardness, excellent toughness, and long recycling life.

Compared with angular steel grit, steel shot relies on a stable impact force rather than aggressive cutting. It removes rust, oxide scale, and welding slag without excessively increasing surface roughness. At the same time, it strengthens the metal surface, relieves residual stress, and improves fatigue resistance.

Key Specifications

Performance Characteristics

• Spherical impact: The round shape delivers even impact and forms a fine anchor pattern, which improves coating adhesion.
• Wear resistance: High recyclability reduces long-term consumption costs in shot blasting operations.
• Controlled chemistry: Sulfur and phosphorus are limited to minimize unwanted material transfer during surface treatment.
• Low fracture rate: Dense internal structure reduces particle breakage and dust generation.

Typical Applications

Steel shot from Haishan is used across a wide range of surface treatment processes. Common applications include:

• Steel structure derusting and pre-painting preparation
• Mechanical parts shot peening and stress relief
• Casting and forging cleaning
• Automobile parts surface strengthening
• Ship and container anti-corrosion pretreatment
• Hardware surface finishing

The product is compatible with all standard shot blasting and sandblasting equipment. It creates uniform surface profiles that improve coating adhesion and extend coating service life.

Particle Size Distribution

Steel Shot vs Steel Grit

Hardness Selection Guide

Particle Size Selection Tips

• Fine sizes (SS 0.2 - SS 0.5): Suitable for precision parts, thin sheet metal, and applications requiring smooth finish.
• Medium sizes (SS 0.6 - SS 1.2): Good balance between cleaning speed and surface profile for general steel structures.
• Coarse sizes (SS 1.4 - SS 2.5): Used for heavy rust removal on thick plates and large structural components.
• Selection should also consider blasting equipment type, workpiece hardness, and desired anchor profile depth.

Quality Control and Testing

Every production batch is inspected in our laboratory. The following tests are performed:

• Chemical composition analysis using SPECTRO direct-reading spectrometer
• Hardness testing (Rockwell HRC) on multiple samples per batch
• Metallographic examination to verify tempered martensite structure
• Particle size distribution analysis by standard sieve method
• Sphericity and surface defect inspection
• Density measurement by alcohol displacement method
• Fatigue life testing using Irwin fatigue life tester for selected batches

Products are manufactured in accordance with GB/T 18838 and SAE J444 standards. Our quality management system is certified to ISO 9001, ISO 14001, and ISO 45001. Full batch traceability is maintained from raw material inspection to final dispatch.

Frequently Asked Questions

What is the difference between steel shot and steel grit?

High Carbon Steel Shot is spherical and works by impact. It removes contaminants while producing a relatively smooth surface. Steel grit is angular and cuts the surface, creating a sharper profile. Steel shot is preferred for general cleaning and coating preparation, while steel grit is used when aggressive rust removal or deep anchoring is needed.

Which hardness of steel shot should I choose?

For most general steel structure blasting, HRC 40-50 is a good starting point. If you are dealing with heavily corroded surfaces or need faster cleaning, you may consider higher hardness grades. However, higher hardness can increase the risk of surface damage on thin or softer substrates.

How do I select the correct particle size?

Particle size depends on your workpiece thickness, required surface profile, and blasting equipment. Fine particles produce a smoother finish, while coarse particles clean faster but create a deeper profile. Refer to the particle size table above or contact our team for a recommendation based on your specific conditions.

Does steel shot last longer than other abrasives?

High Carbon Steel Shot is known for its long recycling life compared with expendable abrasives like sand or slag. The actual service life depends on operating conditions, equipment settings, and the material being cleaned. In many applications, steel shot can be recycled hundreds of times.

Is steel shot suitable for stainless steel workpieces?

Steel shot can be used on stainless steel, but cross-contamination with carbon steel must be avoided if the stainless steel will be used in corrosive environments. For critical applications, a dedicated batch of shot or stainless steel shot may be required. Our team can advise on the best approach for your specific situation.

Can I get a sample before placing a bulk order?

Yes, we provide samples for testing. Please contact our sales team with your workpiece material, blasting equipment type, and desired particle size. We will send a suitable sample so you can verify performance under your own conditions.