
· Nominal size: 0.30 mm, size range: 0.20~0.40 mm
· Hardness: 40–50 HRC
· Chemical composition: C 0.8–1.2%, Mn 0.6–1.2%, S ≤0.05%, P ≤0.05%
· Density: approx. 7.4–7.6 g/cm³
· Features: spherical shape, good toughness, reusable for many cycles (2000+ cycles), produces fine and uniform surface roughness
✅ Typical Applications
1. Descaling & deburring for precision castings, aluminum alloy and die castings
2. Shot peening for precision components
3. Rust and scale removal on thin sheets & thin-walled parts for fine surface finish
4. Surface preparation before coating, for low Ra surface requirement
Comparison: S110 is finer than S170 and coarser than S70. Choose S170/S230 for coarser grade, S70 for finer grade.
Standard: SAE J444 (2023 latest version) | High carbon spherical steel shot for blasting cleaning & shot peening Hardness grades: GP:40–51HRC / GL:50–55HRC / GH:56–62HRC
表格
1. SAE naming rule: The number after S refers to nominal sieve opening (unit: 1/10000 inch), not the mm value directly. Nominal mm size is commonly used for customer communication.
2. Typical chemical composition: C 0.8–1.2%, Mn 0.6–1.2%, S ≤0.05%, P ≤0.05%, density ≈7.4–7.6 g/cm³
3. SAE J444 also covers Steel Grit (G series), angular abrasive for rough surface, heavy rust & scale removal.