The Type dimension of Tension Springs segmentation distinguishes four principal categories: Standard carbon‑steel, Stainless‑steel, Plastic‑coated, and Heavy‑duty alloy. Standard carbon‑steel springs dominate the market due to their low cost and adequate performance in low‑stress environments, accounting for roughly 45 % of total volume. Stainless‑steel variants, prized for corrosion resistance, capture about 25 % of the market, especially in marine and food‑processing applications where durability justifies the premium price. Plastic‑coated springs, which combine moderate corrosion protection with reduced noise, hold a 15 % share, primarily serving consumer‑product assemblies. Heavy‑duty alloy springs, engineered for high‑load and extreme‑temperature conditions, represent the remaining 15 %, driven by niche sectors such as aerospace and heavy industrial machinery. Collectively, these type sub‑segments define the overall size and growth dynamics of the Tension Springs market, with material selection directly influencing cost structure, lifecycle, and end‑use suitability.