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MPEL > All Evaluation > Product EvaluationLogin
 

Product Evaluation

Friday, December 15, 2017 

Product Information

Vendor MMFX Steel Corporation
Representative David Miller
Manufacturer Name MMFX Steel Corporation
Product Name ChrōmX 4100 Concrete Reinforcing Bars
Product Description A. MMFX Steel MMFX Steel concrete reinforcing bars provide unique material properties of uncoated corrosion- resistant reinforcement (CRR) and high-strength. MMFX steel bars are sold as ChrōmX 4100 concrete reinforcing products. ChrōmXs material properties (corrosion- resistance and high-strength) result from both its chemical composition and manufacturing process. ChrōmX 4100 Concrete Reinforcing Bars ChrōmX 4100 Grade 100 [690] high- strength reinforcing and CRR steel bars are specified as ASTM A1035/A1035 M Type CM Grade 100 [690]. These bars have a lower corrosion resistance than ChrōmX 9100 bars and are produced in a similar manner to ChrōmX 9100 bars with a lower chromium (Cr) content and higher carbon (C) content than ChrōmX 9100 bars B. Material Composition ChrōmX Concrete Reinforcing Steel Conventional carbon steels have a microstructure of chemically dissimilar phases of carbide and ferrite. Carbides are strong, yet brittle and pinned to the grain boundaries. In a humid environment, a battery-like effect occurs between the carbides and the ferrite matrix that degrades steels from the inside out. This effect, (so called microgalvanic cell), is the primary corrosion initiator that drives the corrosion reaction. MMFXs patented proprietary steel technology forms a matrix with substantially no-carbides. ChrōmX steel bars area low-carbon, chromium alloy steel that are produced as part of a controlled- rolling production process (i.e. rolling steel within a well- defined temperature range and cooled at a specific rate). The combination of chemical composition and manufacturing process produces a steel that has a completely different structure at a nano scale (i.e. a layered microstructure resembling plywood). Steel made using MMFX nanotechnology minimizes the formation of microgalvanic cells (the driving force behind corrosion). MMFXs microstructure provides superior strength, ductility, toughness, and corrosion resistance. Most steel exhibits strength at the cost of ductility (or brittleness). Steel that is made using MMFXs nanotechnology is not only stronger and tougher (not brittle), but is also more corrosion-resistant than conventional steel. This technology and material composition has enabled the development of high-strength, cost-effective MMFX steels. (For more information see http://www.mmfx.com/wp- content/uploads/2016/05/Material_ Properties_Design_Considerations_ May%202016.pdf)
Intended Use ChrōmX 4100 rebars are appropriate for use as concrete reinforcement in building, industrial, transportation and other reinforced concrete applications. These bars provide added value for structures designed utilizing a yield strength of 100 ksi (690 MPa), providing up to 40% savings in material, fabrication and installation for structural applications, such as buildings and bridges. ChrōmX 4100 (ASTM A1035 Type CM Grade 100) bars are appropriate for use in building (piles, foundations, slabs, beams, and columns), bridge (decks, girders, columns, abutments), retaining walls, marine facilities (docks, piers, fenders, etc.), pavement (dowel bars and lane tie bars) and other related cast-in-place and precast reinforced concrete members.
Category (ies) Structural Materials and Components
       Reinforcement
       Dowel Bars
Product Area Statewide New Product
Date Added 1/18/2017 2:31:07 PM
 

Product Evaluation Status

Product Status Approved
 

 

 
 
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