Polypropylene Fiber vs Steel Fiber Technical Comparison

Steel fiber features high tensile strength and hooked-end design, which forms strong mechanical bonding with concrete. It greatly improves concrete’s flexural resistance, impact resistance and fatigue resistance.

PP fiber is a lightweight, chemically stable synthetic fiber. It cannot provide strong structural bearing capacity, but it can solve the most common construction problem: early shrinkage cracking.

Steel fiber requires strict mixing procedures. Wrong feeding order easily causes fiber balling and affects pouring quality. Due to heavy dosage, overall material and transportation costs are higher.

Polypropylene fiber (pp macro fiber or pp micro fiber) is construction-friendly. It disperses easily, requires no complicated operation, and significantly reduces total project cost with ultra-low mixing dosage.

Application Selection Guide

Choose Steel Fiber If Your Project:

◆Needs heavy load bearing (factory floors, warehouse yards)

◆Requires impact and explosion resistance

◆Tunnel shotcrete, slope support, bridge and UHPC components

◆Indoor projects without corrosive substances

Choose Polypropylene Fiber If Your Project:

◆Focuses on anti-cracking, waterproof and anti-shrinkage performance

◆Roofs, basements, reservoirs, swimming pools

◆Coastal, chemical plant, salt-rich corrosive environments

◆Ordinary roads, ,Industrial floor rdecorative concrete and wall plastering

◆Budget-sensitive general construction projects