The Stainless Steel Round Bar for Furnaces is a versatile and high-performance component designed to meet the rigorous demands of industrial furnace applications, where materials must withstand extreme temperatures, corrosive atmospheres, and continuous mechanical stress.
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Available in three premium grades—304, 316, and 310S stainless steel—this round bar offers tailored solutions for diverse thermal environments, with heat resistance up to 1150°C and exceptional tensile strength (860MPa). Unlike carbon steel bars that oxidize rapidly at high temperatures, these stainless steel bars maintain structural integrity and corrosion resistance, making them ideal for critical furnace components such as rollers, support brackets, and heat exchangers. Their uniform composition and precise machining ensure consistent performance across industries including steel, glass, ceramics, and chemical processing.
Parameter | Value |
Material | 304, 316, 310S Stainless Steel |
Temperature Range | 304: 870°C; 316: 1050°C; 310S: 1150°C |
Diameter Range | 20mm to 300mm |
Length Options | 1m-6m (custom cut available) |
Tolerance | ±0.05mm on diameter |
Surface Finish | Bright annealed, polished (Ra 0.8μm), or machined |
Tensile Strength | 304: 515MPa; 316: 550MPa; 310S: 860MPa |
High-Temperature Strength: The alloy composition of each grade ensures mechanical stability at elevated temperatures. 310S grade, with 25% chromium and 20% nickel, maintains over 60% of its room-temperature strength at 1150°C, making it suitable for furnace components in direct contact with heat sources.
Corrosion Resistance: 304 grade resists general oxidation and mild chemical exposure; 316 adds molybdenum (2-3%) for enhanced resistance to chlorides and sulfuric acid, ideal for chemical furnaces; 310S excels in reducing atmospheres with high sulfur content, common in glass manufacturing.
Machinability: The bars feature uniform grain structure, allowing for precise machining into complex shapes—including threads, grooves, and tapers—using standard CNC equipment. This versatility supports custom furnace designs without compromising material integrity.
Thermal Fatigue Resistance: All grades undergo annealing treatments to reduce internal stress, enabling them to withstand repeated heating and cooling cycles (from ambient to 1000°C+) without cracking, a critical feature for batch-type furnaces.
Furnace Rollers: In continuous annealing lines, 310S bars serve as rollers, supporting steel strips at 800-900°C while resisting warping and wear.
Heat Exchangers: 316 bars form tubes and fins in furnace heat recovery systems, transferring heat from exhaust gases (600-800°C) to incoming air while resisting corrosion from flue gas condensates.
Support Structures: 304 bars reinforce furnace walls, roofs, and door frames in steel annealing furnaces, providing structural stability at 900°C during 24/7 operation.
Glass Manufacturing: 310S bars create support rails and stirrers in glass melting furnaces, withstanding 1100°C temperatures and corrosive molten glass (rich in silica and alkalis).
Q: Can the round bar be customized for specific diameters?
A: Yes, we offer custom diameters from 20mm to 300mm with tight tolerances (±0.05mm) to meet unique furnace designs. Our manufacturing facility can produce non-standard sizes with lead times of 2-4 weeks.
Q: What is the difference between 304 and 310S grades?
A: 304 is a general-purpose grade with 18% Cr and 8% Ni, suitable for temperatures up to 870°C in oxidizing environments. 310S contains higher chromium (25%) and nickel (20%), enabling it to withstand 1150°C and resist sulfidation, making it ideal for extreme heat and reducing atmospheres.
Q: How do I prevent oxidation during use?
A: For 304 and 316 grades, periodic cleaning to remove oxide scale and application of a ceramic coating (rated to 1200°C) can extend service life. 310S naturally forms a more stable chromium oxide layer, requiring minimal oxidation prevention measures in most applications.
Q: Is the round bar compatible with induction heating?
A: Yes, all grades are magnetically permeable at room temperature and work seamlessly in induction heating systems, ensuring uniform heat distribution during furnace operation. 310S is particularly suitable due to its low magnetic permeability at high temperatures, reducing energy loss.
Available in three premium grades—304, 316, and 310S stainless steel—this round bar offers tailored solutions for diverse thermal environments, with heat resistance up to 1150°C and exceptional tensile strength (860MPa). Unlike carbon steel bars that oxidize rapidly at high temperatures, these stainless steel bars maintain structural integrity and corrosion resistance, making them ideal for critical furnace components such as rollers, support brackets, and heat exchangers. Their uniform composition and precise machining ensure consistent performance across industries including steel, glass, ceramics, and chemical processing.
Parameter | Value |
Material | 304, 316, 310S Stainless Steel |
Temperature Range | 304: 870°C; 316: 1050°C; 310S: 1150°C |
Diameter Range | 20mm to 300mm |
Length Options | 1m-6m (custom cut available) |
Tolerance | ±0.05mm on diameter |
Surface Finish | Bright annealed, polished (Ra 0.8μm), or machined |
Tensile Strength | 304: 515MPa; 316: 550MPa; 310S: 860MPa |
High-Temperature Strength: The alloy composition of each grade ensures mechanical stability at elevated temperatures. 310S grade, with 25% chromium and 20% nickel, maintains over 60% of its room-temperature strength at 1150°C, making it suitable for furnace components in direct contact with heat sources.
Corrosion Resistance: 304 grade resists general oxidation and mild chemical exposure; 316 adds molybdenum (2-3%) for enhanced resistance to chlorides and sulfuric acid, ideal for chemical furnaces; 310S excels in reducing atmospheres with high sulfur content, common in glass manufacturing.
Machinability: The bars feature uniform grain structure, allowing for precise machining into complex shapes—including threads, grooves, and tapers—using standard CNC equipment. This versatility supports custom furnace designs without compromising material integrity.
Thermal Fatigue Resistance: All grades undergo annealing treatments to reduce internal stress, enabling them to withstand repeated heating and cooling cycles (from ambient to 1000°C+) without cracking, a critical feature for batch-type furnaces.
Furnace Rollers: In continuous annealing lines, 310S bars serve as rollers, supporting steel strips at 800-900°C while resisting warping and wear.
Heat Exchangers: 316 bars form tubes and fins in furnace heat recovery systems, transferring heat from exhaust gases (600-800°C) to incoming air while resisting corrosion from flue gas condensates.
Support Structures: 304 bars reinforce furnace walls, roofs, and door frames in steel annealing furnaces, providing structural stability at 900°C during 24/7 operation.
Glass Manufacturing: 310S bars create support rails and stirrers in glass melting furnaces, withstanding 1100°C temperatures and corrosive molten glass (rich in silica and alkalis).
Q: Can the round bar be customized for specific diameters?
A: Yes, we offer custom diameters from 20mm to 300mm with tight tolerances (±0.05mm) to meet unique furnace designs. Our manufacturing facility can produce non-standard sizes with lead times of 2-4 weeks.
Q: What is the difference between 304 and 310S grades?
A: 304 is a general-purpose grade with 18% Cr and 8% Ni, suitable for temperatures up to 870°C in oxidizing environments. 310S contains higher chromium (25%) and nickel (20%), enabling it to withstand 1150°C and resist sulfidation, making it ideal for extreme heat and reducing atmospheres.
Q: How do I prevent oxidation during use?
A: For 304 and 316 grades, periodic cleaning to remove oxide scale and application of a ceramic coating (rated to 1200°C) can extend service life. 310S naturally forms a more stable chromium oxide layer, requiring minimal oxidation prevention measures in most applications.
Q: Is the round bar compatible with induction heating?
A: Yes, all grades are magnetically permeable at room temperature and work seamlessly in induction heating systems, ensuring uniform heat distribution during furnace operation. 310S is particularly suitable due to its low magnetic permeability at high temperatures, reducing energy loss.
