MMFX® Steel Corporation of America introduced their latest line of high-strength reinforcing steel featuring a 100 ksi yield strength, ChromX™ 4100. This product is targeted at large construction projects in need of high-yield strength at a reasonable material cost.
ChromX 4100 has the same mechanical properties of high-strength ASTM A1035 reinforcing steel, and is based on the unique technology used to manufacture the uncoated high-strength and corrosion-resistant MMFX2 reinforcing steel. Through the modified chemistry of ChromX 4100, MMFX can offer reinforcing steel optimised to fulfil the needs of high-strength steel applications when high corrosion resistance is not required. Grade 100 ChromX 4100 high-strength rebar allows structures to be designed and built with up to 40% less steel. Additional cost reductions of up to 60% can be achieved through lower steel fabrication and placement labour costs.
The steel technology used in the manufacture of ChromX 4100 results in a low-carbon martensitic steel microstructure with high ductility. Unlike common carbon steel rebar, which loses ductility as strength is increased, ChromX 4100 maintains excellent ductility and can be fabricated like conventional reinforcing steel.
Acceptance and application of Grade 100 steel rebar, conforming to ASTM A1035, has been on the rise in recent years.