Stainless steel rebar has proven corrosion resistance and will last at least 100 years.
SSR supplies various types and sizes of stainless steel reinforcement bars commonly used throughout North America. These bars meet the requirements of ASTM A955, the stainless steel rebar standard.
Rebar stock is sourced mainly from mills within the U.S. which meets the “Buy America” requirements. Limited quantities of rebar are purchased from foreign sources.
Stainless Types in Stock
SSR stocks the following types of stainless steel reinforcement bars which are the most commonly used throughout North America include :
S2304 Duplex UNS S32304
This alloy is a lean duplex stainless steel that has a microstructure consisting of austenite and ferrite phases. This duplex microstructure and the chemical composition of 2304 Duplex stainless results in an excellent combination of strength and corrosion resistance. 2304 Duplex stainless possesses good resistance to general corrosion in many acid environments, chloride stress corrosion cracking, pitting and crevice corrosion.
2205 Duplex UNS S31803
This alloy has a microstructure of austenite and ferrite (duplex) due to its chemical balance. The addition of nitrogen provides strength levels close to 80% higher than 304 with superior corrosion properties. The alloy chromium and moly content provides superior pitting and crevice corrosion properties and excellent stress corrosion cracking resistance.
XM-28 Austenitic UNS S24100
N32 is a high-manganese, low-nickel, nitrogen strengthened austenitic stainless steel. By means of solid solution strengthening, the nitrogen provides significantly higher yield and tensile strength as annealed without adversely affecting ductility, corrosion resistance or non-magnetic properties. In the hot rolled unannealed condition, yield strengths of 75 ksi (518 MPa) or higher can be achieved for bar diameters up to 2 in. (50.8 mm). EnduraMet 32 stainless may be considered for rebar in bridge decks, barrier and retaining walls, anchoring systems, chemical plant infrastructure, coastal piers and wharves, bridge parapets, sidewalks and bridge pilings. Because of its low magnetic permeability, it may also be considered for concrete rebar applications in close proximity to sensitive electronic devices and magnetic resonance medical equipment. The higher strength capability, 75 ksi (518 MPa) minimum yield strength, of EnduraMet 32 is an added economical advantage.
316LN Austenitic UNS S31653
This alloy has a lower chromium content, higher nickel than 304, and a 2% moly addition. The latter enhances the corrosion resistance found in harsh environments, especially halogens (chlorides). It offers superior resistance to pitting or crevice corrosion failures typical to high salt of coastal areas. The alloy is austenitic providing excellent formability, weldability, and cryogenic ductility. In addition, this grade has higher creep strength; higher stress ruptures strength and improved tensile strength as compared to 304 type alloys.
Stainless steel reinforcing bars are available from SSR in all of the U.S. conventional imperial bar sizes and the metric sizes used in Canada. U.S. bar sizes are #3 through to #11, and #14 and #18 bars. Metric sizes available for Canadian customers are 10M, 15M, 20M, 25M, 30M, 35M, 45M, and 55M.
In bar sizes #3 to #11, SSR can provide continuous bar lengths up to 60 ft. in length. In bar sizes greater than #11, straight bar lengths are generally made to 40 feet, but longer lengths up to 50 feet are available upon request.
Rebar products are available in Grade 60 and Grade 75 which essentially means yields of 60 ksi and 75 ksi.
|Grade 60 ||Grade 75 |
|Tensile strength, min. psi [MPa]||90,000 ||100,000 |
|Yield strength, min. psi [MPa] *||60,000 ||75,000 |
|Elongation in 8 in. [200 mm], min. % for all bar designation numbers||20||20|