The Spark TMT Bar Spark Fe 415 TMT Bar - 40 mm is a quench-and-self-temper treated reinforcing bar conforming to IS 1786:2008 Grade Fe 415, with 40 mm diameter and standard 12 m length. Achieving 415 MPa yield, 485 MPa tensile strength, and 14.5% elongation, it is ideally suited for general construction, residential slabs, and low-rise structural concrete. The thermomechanical treatment process creates a strong outer layer resistant to bending and cutting forces, while the ductile inner core absorbs energy under seismic and impact loads, ensuring structural resilience in reinforced concrete construction.

• Thermomechanically treated to IS 1786:2008 Fe 415 with mill test certification
• Minimum yield strength 415 MPa and UTS 485 MPa for general RCC design
• Minimum elongation 14.5% providing ductile behaviour under load
• Hard martensitic outer rim with tough ferritic-pearlitic core microstructure
• Superior surface rib pattern ensuring strong mechanical bond with concrete
• Low carbon equivalent supporting easy on-site welding and bar bending
• Resistant to corrosion, fire, and thermal cycling in concrete environments
• Standard 12 m mill lengths for efficient scheduling and reduced wastage
• Suitable for cutting, bending, and welding using conventional site equipment
• Compatible with all standard concrete grades used in residential construction

• Residential building foundations, footings, and pile cap reinforcement
• Ground floor and upper floor slabs in low-rise residential construction
• Columns and beams in single and double storey residential buildings
• Compound walls, boundary walls, and plinth beam reinforcement
• Lintels, chajjas, and window sill reinforcement in housing projects
• Small commercial buildings, shops, and ground-plus-one structures
• Agricultural structures, water tanks, and rural infrastructure
• School buildings, community centres, and low-rise government structures