Pile of high-quality spherical steel peening shot
Close-up of industrial steel shot abrasive media
Uniform martensitic steel shot for shot peening (

Peening Shot

Peening shot is used in the shot peening process, a cold-working technique that bombards a metal surface to induce beneficial compressive stresses, significantly improving fatigue life, strength, and resistance to cracking and corrosion in components like springs, gears, and aerospace parts.

 

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Product Introduction

High-Quality Steel Shot for Shot Peening and Fatigue Strength Improvement

Shandong Zhongxing Metal supplies high-quality peening shot for controlled shot peening applications. Our peening shot is designed to create beneficial compressive residual stress on the surface of metal components, helping improve fatigue life, surface strength, wear resistance and resistance to crack initiation.

With controlled hardness, consistent particle size and a uniformly tempered martensitic microstructure, Zhongxing peening shot provides stable peening intensity and reliable surface coverage. It is suitable for demanding applications in the aerospace, automotive, energy and power generation industries.

Advantages

 

Excellent Service Life

Extends service life under extreme stress and temperature

 

Enhanced Durability

Enhances durability under continuous rotational stress

 

Improved Fatigue Life

Improves fatigue life and surface strength. Increases wear resistance and reduces surface failure

Specifications

Parameter Specification
Chemical Carbon 0.80~1.20%
Manganese 1.20% max.
Silicon 0.40~1.50%
Sulphur 0.05% max.
Phosphorus 0.05% max.
Physical Hardness PS1 (52~56 HRc) / PS2 (54~60 HRc)
Density 7.0 g/cm³ min.
Microstructure Uniformly Tempered Martensite with fine, well-distributed carbides

Size distribution – PEENING shot - Cumulative % retained

Code 7 8 10 12 14 16 18 20 25 30 35 40 45 50 80 120 Mesh
SAE mm 2.80 2.36 2.00 1.70 1.40 1.18 1.00 0.85 0.71 0.60 0.50 0.425 0.355 0.300 0.180 0.125 mm
S780 Φ2.4 All Pass   >85 >97                          
S660 Φ2.0   All Pass   >85 >97                        
S550 Φ1.7     All Pass   >85 >97                      
S460 Φ1.4     All Pass <5   >85 >96                    
S390 Φ1.2       All Pass <5   >85 >96                  
S330 Φ1.0         All Pass <5   >85 >96                
S280 Φ0.8           All Pass <5   >85 >96              
S230 Φ0.7             All Pass <10   >85 >97            
S170 Φ0.6               All Pass <10   >85 >97          
S110 Φ0.4                   All Pass <10   >80 >90      
S70 Φ0.3                       All Pass <10   >80 >90  

Applications

Aerospace

Automotive

Energy

Power generation

Packaging

 
steel drums

Metallic Cans / Cartons

12.5 kg or 25 kg units on 500 kg or 1,000 kg pallets.

 
bags

Bags

20 kg or 25 kg bags on 500 kg or 1,000 kg pallets.

Customized packaging available.

Frequently Asked Questions

What is high-quality peening shot mainly used for?

Peening shot is primarily used in controlled shot peening applications to create beneficial compressive residual stress on the surface of metal components. This process helps significantly improve fatigue life, surface strength, wear resistance, and resistance to crack initiation. It is highly recommended for critical components in the aerospace, automotive, energy, and power generation industries.

What are the key properties of Zhongxing's peening shot?

Zhongxing peening shot features strictly controlled hardness, consistent particle size, and a uniformly tempered martensitic microstructure with fine, well-distributed carbides. These key properties provide stable peening intensity and reliable surface coverage. Furthermore, it ensures excellent service life and enhanced durability under extreme temperature and continuous rotational stress.

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