The Durable Flat Steel for Steel Mills is a high-performance structural material engineered to withstand the triple challenges of heavy static/dynamic loads, abrasive wear, and corrosive industrial atmospheres in steel production facilities.
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Unlike standard mild steel that succumbs to wear within 6-12 months in high-stress areas, this flat steel is available in 304/316 stainless steel (for corrosion resistance) and AR400 abrasion-resistant steel (for wear resistance), delivering tailored solutions for diverse applications. Its precision-milled edges (±0.1mm tolerance) ensure seamless integration into critical equipment, while the annealed finish (Ra 1.6μm) enhances paint adhesion and corrosion resistance, reducing replacement costs by 30% over a 5-year period.
Parameter | Value |
Material | 304/316 Stainless Steel, AR400 |
Thickness | 3mm-50mm (±0.05mm tolerance) |
Width | 50mm-300mm (±0.1mm tolerance) |
Length | 2m-12m (custom cut available) |
Surface Finish | Annealed (Ra 1.6μm), hot-dip galvanized (85μm), or epoxy-painted (60μm) |
Tensile Strength | 304: 515MPa; 316: 550MPa; AR400: 1000MPa |
Hardness | 304/316: 150HBW; AR400: 360-440HBW |
Certifications | ASTM A240 (stainless), EN 10025-6 (AR400) |
Extreme Abrasion Resistance: AR400 grade’s high-carbon content (0.28-0.36%) and quenched microstructure provide a Brinell hardness of 400HBW, resisting slag impact (from molten steel splashes) and conveyor belt wear. In ore handling systems, it extends service life by 40% compared to A36 steel, with wear rates as low as 0.1mm/year.
Corrosion Protection: 316 stainless steel’s 2-3% molybdenum content forms a protective oxide layer that resists molten steel splash (containing FeO and MnO) and cooling water corrosion (chloride levels up to 1000ppm). In billet transfer tables, it outperforms 304 stainless steel by 2x in service life.
Formability: The flat steel undergoes controlled rolling and annealing, allowing it to be cold-bent to 90° (radius = 2× thickness) without cracking. This enables custom fabrication of furnace door frames, chute liners, and support brackets with minimal post-processing.
Load Bearing: The 50mm-thick AR400 variant supports 200kN/m² in conveyor rollers—equivalent to 20 tons per square meter—outperforming mild steel by 300% and reducing deflection by 70% under full load.
Conveyor Systems: Forms wear-resistant chutes and skirting in iron ore processing lines, handling 500-ton/day throughput with minimal abrasion. AR400 grade reduces chute replacement frequency from quarterly to annually.
Furnace Supports: Reinforces hearth structures in electric arc furnaces, withstanding 1200°C radiant heat (via ceramic coating) and 50-ton roof loads without deformation. 316 stainless steel variants resist oxidation in furnace atmospheres.
Ladle Components: Fabricates refractory anchor plates and lifting lugs in 300-ton ladles, resisting 1600°C molten steel contact (via refractory cladding) and mechanical stress during tilting operations.
Offshore Platforms: Used in corrosion-resistant walkways, handrails, and equipment bases in coastal steel mills, withstanding saltwater mist (35g/m³ chloride concentration) and 95% humidity without significant corrosion.
Q: What is the maximum temperature for 316 stainless steel flat steel?
A: It maintains 90% of its ambient strength at 870°C (515MPa at 20°C vs. 460MPa at 870°C), making it suitable for continuous use in reheating furnace supports and heat exchanger brackets.
Q: Can it be welded in high-temperature environments?
A: Yes, use ER316L filler wire with a 300°C preheat and 800°C post-weld heat treatment to prevent sensitization (chromium carbide precipitation). This ensures joint corrosion resistance matches the base material.
Q: What is the weight per meter for 10mm-thick AR400?
A: For 10mm thickness × 200mm width, weight is approximately 78.5kg/m (density = 7.85g/cm³). Custom widths change weight proportionally (e.g., 100mm width = 39.25kg/m).
Q: Are custom coatings available?
A: Yes, we offer ceramic thermal barrier coatings (CTBC, 200μm thickness) rated to 1200°C for furnace applications, reducing heat transfer by 60%, and epoxy-polyurethane coatings (120μm) for corrosion resistance in wet environments.
Unlike standard mild steel that succumbs to wear within 6-12 months in high-stress areas, this flat steel is available in 304/316 stainless steel (for corrosion resistance) and AR400 abrasion-resistant steel (for wear resistance), delivering tailored solutions for diverse applications. Its precision-milled edges (±0.1mm tolerance) ensure seamless integration into critical equipment, while the annealed finish (Ra 1.6μm) enhances paint adhesion and corrosion resistance, reducing replacement costs by 30% over a 5-year period.
Parameter | Value |
Material | 304/316 Stainless Steel, AR400 |
Thickness | 3mm-50mm (±0.05mm tolerance) |
Width | 50mm-300mm (±0.1mm tolerance) |
Length | 2m-12m (custom cut available) |
Surface Finish | Annealed (Ra 1.6μm), hot-dip galvanized (85μm), or epoxy-painted (60μm) |
Tensile Strength | 304: 515MPa; 316: 550MPa; AR400: 1000MPa |
Hardness | 304/316: 150HBW; AR400: 360-440HBW |
Certifications | ASTM A240 (stainless), EN 10025-6 (AR400) |
Extreme Abrasion Resistance: AR400 grade’s high-carbon content (0.28-0.36%) and quenched microstructure provide a Brinell hardness of 400HBW, resisting slag impact (from molten steel splashes) and conveyor belt wear. In ore handling systems, it extends service life by 40% compared to A36 steel, with wear rates as low as 0.1mm/year.
Corrosion Protection: 316 stainless steel’s 2-3% molybdenum content forms a protective oxide layer that resists molten steel splash (containing FeO and MnO) and cooling water corrosion (chloride levels up to 1000ppm). In billet transfer tables, it outperforms 304 stainless steel by 2x in service life.
Formability: The flat steel undergoes controlled rolling and annealing, allowing it to be cold-bent to 90° (radius = 2× thickness) without cracking. This enables custom fabrication of furnace door frames, chute liners, and support brackets with minimal post-processing.
Load Bearing: The 50mm-thick AR400 variant supports 200kN/m² in conveyor rollers—equivalent to 20 tons per square meter—outperforming mild steel by 300% and reducing deflection by 70% under full load.
Conveyor Systems: Forms wear-resistant chutes and skirting in iron ore processing lines, handling 500-ton/day throughput with minimal abrasion. AR400 grade reduces chute replacement frequency from quarterly to annually.
Furnace Supports: Reinforces hearth structures in electric arc furnaces, withstanding 1200°C radiant heat (via ceramic coating) and 50-ton roof loads without deformation. 316 stainless steel variants resist oxidation in furnace atmospheres.
Ladle Components: Fabricates refractory anchor plates and lifting lugs in 300-ton ladles, resisting 1600°C molten steel contact (via refractory cladding) and mechanical stress during tilting operations.
Offshore Platforms: Used in corrosion-resistant walkways, handrails, and equipment bases in coastal steel mills, withstanding saltwater mist (35g/m³ chloride concentration) and 95% humidity without significant corrosion.
Q: What is the maximum temperature for 316 stainless steel flat steel?
A: It maintains 90% of its ambient strength at 870°C (515MPa at 20°C vs. 460MPa at 870°C), making it suitable for continuous use in reheating furnace supports and heat exchanger brackets.
Q: Can it be welded in high-temperature environments?
A: Yes, use ER316L filler wire with a 300°C preheat and 800°C post-weld heat treatment to prevent sensitization (chromium carbide precipitation). This ensures joint corrosion resistance matches the base material.
Q: What is the weight per meter for 10mm-thick AR400?
A: For 10mm thickness × 200mm width, weight is approximately 78.5kg/m (density = 7.85g/cm³). Custom widths change weight proportionally (e.g., 100mm width = 39.25kg/m).
Q: Are custom coatings available?
A: Yes, we offer ceramic thermal barrier coatings (CTBC, 200μm thickness) rated to 1200°C for furnace applications, reducing heat transfer by 60%, and epoxy-polyurethane coatings (120μm) for corrosion resistance in wet environments.
