Industries
Automotive Industry
Precision surface preparation abrasives engineered for the demanding quality standards of automotive OEMs and Tier-1 suppliers — from engine part cleaning to safety-critical shot peening.
Industry Overview
Meeting automotive quality demands
The automotive sector operates under some of the most stringent surface preparation requirements in manufacturing. OEMs and Tier-1 suppliers must achieve consistent cleanliness and anchor profiles across high-volume production lines — often running 24 hours a day — while maintaining full traceability from raw material to finished part.
Shot peening of safety-critical components such as suspension springs, wheel hubs, and gear sets demands precise Almen intensity control, documented saturation curves, and verified coverage — all of which depend directly on the dimensional consistency and hardness uniformity of the abrasive media. Macloid Metalix supplies steel shot and cut wire shot with sieve analysis and hardness certificates provided with every batch.
Cleanliness Standard
Sa 2.5
Media Hardness
HRC 40–65
Almen Intensity
±0.5A Repeat.
Lot Traceability
10 Year Min.
Recommended Products
Abrasives selected for automotive
Steel Shot
Steel Grit
Cut Wire Shot
Applications
Key uses in this industry
Engine Part Cleaning
Cylinder blocks, crankshafts, and connecting rods arrive from the foundry carrying casting sand, mill scale, and residual oil. Shot blasting with correctly sized steel shot removes all surface contaminants in a controlled, repeatable manner — preparing the metal for precision machining and coating without dimensional distortion.
- ✓Removes casting sand and burnt-in sand from core passages
- ✓Eliminates mill scale, rust, and oxidation layers
- ✓Cleans oil and grease residue from machined surfaces
- ✓Achieves Sa 2.5 cleanliness standard consistently
Recommended media
Steel Shot S230 – S330
Body Panel Preparation
Sheet metal stampings and body panels require a clean, profiled surface before primer application. Steel shot blasting removes mill scale and light rust while imparting a controlled surface roughness that maximises paint adhesion and ensures long-term corrosion protection in demanding environments.
- ✓Achieves Sa 2.5 cleanliness per ISO 8501-1
- ✓Controlled anchor profile for improved paint adhesion
- ✓Uniform surface finish across large panel areas
- ✓Compatible with cathodic e-coat and powder coating lines
Recommended media
Steel Shot S170 – S230
Shot Peening
Safety-critical components — wheel hubs, suspension coil springs, leaf springs, drive shafts, and transmission gears — require shot peening to induce compressive residual stress in the surface layer. This stress field inhibits fatigue crack initiation and propagation, significantly extending component life under cyclic loading.
- ✓Induces compressive residual stress up to 600 MPa depth
- ✓Improves fatigue life by 20–100% depending on geometry
- ✓Controlled Almen intensity to AMS 2430 / SAE J443 requirements
- ✓Coverage verification to 98% minimum per specification
Recommended media
Cut Wire Shot or Steel Shot S230
Compliance
Standards & certifications
Automotive Quality Management System — our facility operates under IATF-aligned processes for traceability, lot control, and consistent product quality.
Shot Peening, Automatic — specifies media type, Almen intensity, coverage, and saturation curve requirements for aerospace and automotive peening.
Steel Shot — defines chemical composition, hardness, microstructure, density, and sieve analysis requirements for cast steel shot.
Procedures for Using Standard Shot Peening Test Strip — defines Almen strip types (A, N, C) and the saturation curve methodology.
Wheels / Rims Peening — addresses cut wire media requirements and conditioning procedures for consistent round-edge wire shot.
Surface Preparation Standards — defines cleanliness grades Sa 1 through Sa 3 for blast-cleaned steel surfaces before coating.
Ready to upgrade your automotive blasting process?
Our technical team can recommend the correct abrasive grade, hardness, and size for your specific application — with full documentation to support your quality system.
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