Home
Business Center
Projects & Studies
Commuter & Travel
Safety Programs
Environment & Community
Info Center
State Highway Administration
Business Center
Projects & Studies
Commuter & Travel
Safety Programs
Environment & Community
Info Center
Contact Us
MPEL > All Evaluation > Product EvaluationLogin
 

Product Evaluation

Sunday, December 17, 2017 

Product Information

Vendor MMFX Steel Corporation
Representative David Miller
Manufacturer Name MMFX Steel Corporation
Product Name CHRŌMX 9100 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 9100, concrete reinforcing products. ChrōmXs material properties (corrosion- resistance and high-strength) result from both its chemical composition and manufacturing process. ChrōmX 9100 Concrete Reinforcing Steel Bars ChrōmX 9100 (formerly known as MMFX2) steel bars are uncoated, corrosion resistant reinforcing (CRR) and, high-strength steel bar products that meet or exceed the mechanical properties of ASTM A615 Grades 75, 80 and 100, ASTM A1035/A1035 M Type CS Grade 100 [690], and AASHTO Standard Specification MP 18M/MP 18 Grade 100. 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 (Table 1) 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 9100, 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 9100 (ASTM A1035 Type CS AASHTO MP 18 Grade 100) bars have been used 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. Common application of the product is structures that can benefit from both the high- strength and corrosion resistance of ChrōmX 9100.
Category (ies) Structural Materials and Components
       Reinforcement
       Dowel Bars
Product Area Statewide New Product
Date Added 1/17/2017 7:07:42 PM
 

Product Evaluation Status

Product Status Product Request Accepted by Product Coordinator
 

 

 
 
707 North Calvert Street Baltimore, Maryland 21202