Steel shot peening is a performance-first surface treatment that embeds a controlled compressive layer to delay crack initiation and slow crack growth. This guide explains how the process works, how to set Almen intensity and achieve 98–100% coverage, and how to balance finish with durability. You’ll compare media types, choose between air-blast and wheel-blast, target high-impact applications, meet standards with audit-ready documentation, avoid production pitfalls, and calculate TCO/ROI to justify peening in real operations.

Shot peening and satin finishing solve different problems. Peening uses spherical impacts to create compressive residual stress and extend fatigue life. Satin finishing uses controlled abrasion to deliver a uniform, low-gloss texture without adding strength. This guide explains mechanisms, KPIs, applications, cost-in-use, and two validated routes for combining both processes on steel components.

Selecting shot peening media shapes fatigue life, finish, and cost. This guide compares steel shot, glass beads, ceramic beads, and stainless steel shot, explaining when each excels. Learn how size and hardness affect Almen intensity, coverage, and roughness, how media quality and standards ensure repeatability, and how to judge total cost-in-use for reliable, audit-ready results.