Steel-Fiber Reinforced Castable

Steel-Fiber-Reinforced Castable

Material System & Positioning

Steel-fiber-reinforced castable incorporates 2-3 vol% heat-resistant stainless steel fibers into a high-alumina matrix (Al₂O₃ ≥65%), with service up to 1400℃. Randomly oriented fibers bridge and toughen the matrix, markedly improving flexural strength and thermal-shock spalling resistance for severe temperature cycling and mechanical vibration. It is Henan Songrui's dedicated grade for EAF roofs and furnace doors.

Key Performance

• Fiber toughening: stainless steel fibers improve flexural and spalling resistance.
• Crack resistance: high toughness, resists through-cracking under rapid heating/cooling.
• Impact resistance: longer life under mechanical vibration and impact.
• Cycling suitability: ideal for EAF roofs, doors and kiln hoods.

Applications

• Steel & Iron: EAF roofs, ladle covers, door frames, converter mouths.
• Cement: kiln hoods, cooler hot sections, tertiary air ducts.
• Non-ferrous: copper furnace roofs, rotary kiln mouths.
• Waste-to-energy: furnace doors, feed ports.

Selection Advice

Fiber reinforcement suits combined mechanical and thermal stress zones; pure high-temperature slag zones need no fiber reinforcement—use the matching base castable to avoid unnecessary cost.

Installation & Maintenance

Ensure fibers disperse uniformly without clumping using a forced mixer; vibrate fully and heat up per the standard curve.

Quality Assurance

Henan Songrui New Refractory Materials Co., Ltd. (Xuanhua Town Industrial Park, Henan) is a 2024 Class A taxpayer and SRDI SME. For selection, quotation or installation guidance, contact Manager Zheng (17513376789 / 17513376789@163.com).

• Heat-resistant stainless fibers, randomly distributed for toughening
• Markedly higher MOR and thermal-shock spalling resistance
• Tough, resists through-cracking under rapid heating/cooling
• For EAF roofs, doors and kiln hoods with cycling
• Longer life under mechanical vibration and impact
• Ensure fibers disperse without balling during mixing

Steel fiber reinforced castable uses stainless steel fibers for toughness:

• Steel & Iron: reheating furnace hearths and wall impact zones, tapholes, door frames, EAF thermal shock zones.
• Power Boilers: burner zones, refractory belts, CFB dense-phase zones.
• Cement: kiln hoods, cooler walls under thermal/mechanical impact.
• Waste-to-energy: furnace walls, slag discharge openings.
• Advantage: service up to 1450℃, stainless fibers improve thermal shock, impact and crack resistance for frequent start-stop furnaces.