Oystar Dairy Fittings

• Material:F11 round bars are made from a chromium-molybdenum alloy steel, containing elements like chromium and molybdenum to enhance strength, hardness, and corrosion resistance. 
• Standards:They conform to the ASTM A182 standard, which covers forged or rolled alloy and stainless steel pipe flanges, fittings, and valves. 
• Applications:Commonly used in high-temperature and high-pressure environments, such as in petrochemical plants, power generation (including nuclear), and chemical processing. 
• Properties:F11 bars offer high tensile strength, excellent toughness, and good machinability. 
• Corrosion Resistance:The chromium content in the alloy provides good resistance to corrosion, especially at elevated temperatures. 
• Weldability:F11 alloy steel is generally considered weldable, making it suitable for various fabrication processes. 
• Equivalent Grades:Other designations for similar materials include 13CrMo44 (Germany/DIN), 15CrMoA (China/GB), and UNS K11597. 
• Typical Uses:F11 round bars are used in various components like flanges, fittings, valves, and other parts in pressure systems. 
• Surface Finishes:F11 round bars can be supplied in various surface conditions, including black, bright, proof machined, or machined to specific requirements. 
• Heat Treatment:They can be supplied in the annealed condition or as rolled/forged. 

A105 ROUND BARS & FLAT BARS

• Material:F22 round bars are made from a chromium-molybdenum alloy steel, containing elements like chromium and molybdenum to enhance strength, hardness, and corrosion resistance. 
• Standards:They conform to the ASTM A182 standard, which covers forged or rolled alloy and stainless steel pipe flanges, fittings, and valves. 
• Applications:Commonly used in high-temperature and high-pressure environments, such as in petrochemical plants, power generation (including nuclear), and chemical processing. 
• Properties:F11 bars offer high tensile strength, excellent toughness, and good machinability. 
• Corrosion Resistance:The chromium content in the alloy provides good resistance to corrosion, especially at elevated temperatures. 
• Weldability:F11 alloy steel is generally considered weldable, making it suitable for various fabrication processes. 
• Equivalent Grades:Other designations for similar materials include 13CrMo44 (Germany/DIN), 15CrMoA (China/GB), and UNS K11597. 
• Typical Uses:F11 round bars are used in various components like flanges, fittings, valves, and other parts in pressure systems. 
• Surface Finishes:F11 round bars can be supplied in various surface conditions, including black, bright, proof machined, or machined to specific requirements. 
• Heat Treatment:They can be supplied in the annealed condition or as rolled/forged. 

We "Oystar Dairy Fittings" are Partnership Firm. Involved as the Wholesale, Manufacturer and Retailer of Ball Valve and TC Ferrules.

• High Strength:EN19 round bars exhibit high tensile strength, typically ranging from 700-1000 MPa, making them suitable for load-bearing applications. 
• Toughness:They offer good resistance to impact and shock, which is crucial for components operating under dynamic loads. 
• Wear Resistance:EN19 demonstrates good wear resistance, making it suitable for parts subjected to abrasion and friction. 
• Fatigue Resistance:The alloy has high fatigue resistance, making it suitable for applications involving repeated loading. 
• Heat Treatable:EN19 can be heat treated to achieve different hardness and strength levels, allowing for customization based on specific application needs. 
• Machinability:EN19 has good machinability in the annealed condition. 
• Weldability:It can be welded, but post-weld heat treatment is recommended to restore properties. 

• Automotive gears and parts
• Shafts, axles, and crankshafts
• Connecting rods and propeller shaft joints
• High-tensile bolts and studs
• Towing pins and load-bearing tie rods
• Oil and gas industry components 

• Annealing:Heating to a specific temperature, holding, and then cooling slowly to soften the steel. 
• Normalizing:Heating to a higher temperature than annealing and cooling in air to refine the grain structure and improve mechanical properties. 
• Quenching and Tempering:Heating to a high temperature, rapidly cooling in oil or water, followed by reheating to a lower temperature and cooling to increase hardness and toughness. 

• High Strength:EN24 offers high tensile strength, making it suitable for load-bearing and stress-critical applications. 
• Good Ductility:Despite its strength, EN24 retains good ductility, meaning it can deform under stress without fracturing, which is crucial for absorbing impact. 
• Wear Resistance:EN24's composition and heat treatment provide excellent wear resistance, making it suitable for components subject to friction and abrasion. 
• Hardening and Tempering:It is often supplied in a hardened and tempered condition (also known as "T" condition), which enhances its mechanical properties. 
• Weldability:EN24 can be welded, but it's recommended to preheat and use appropriate welding procedures to avoid cracking. 
• Machinability:EN24 has good machinability, allowing for precise manufacturing and shaping. 

• Carbon (C): 0.35-0.45%
• Manganese (Mn): 0.45-0.70%
• Silicon (Si): 0.10-0.35%
• Chromium (Cr): 1.00-1.70%
• Nickel (Ni): 1.30-1.80%
• Molybdenum (Mo): 0.20-0.40%

• Automotive: Gears, shafts, axles, and other high-stress components.
• Aerospace: Landing gear, engine components, and other critical parts.
• Engineering: Heavy-duty shafts, studs, bolts, and machinery components.
• Tooling: Dies, molds, and other tools requiring high strength and wear resistance.
• Oil and Gas: Drilling equipment and other components subjected to harsh conditions. 

• Annealing: Heat to 830-850°C, then cool slowly to improve machinability.
• Hardening: Heat to 820-850°C, then quench in oil.
• Tempering: Heat to 200-660°C (depending on desired properties) and hold for a specific time.