CARBON STEEL CS ASME/ASTM A105/A105N FLANGE

ASTM A105 is a specification for carbon steel forgings used for piping applications, and it's commonly used for flanges in various industrial applications. Here’s a detailed look at the types and specifications of A105 flanges:Types of A105 Flanges:1. Weld Neck Flanges:o Description: Weld neck flanges are used to connect pipes and are welded to the pipe and then to the flange. This type provides a strong and durable connection.o Applications: Often used in high-pressure applications and critical services.2. Slip-On Flanges:o Description: Slip-on flanges are designed to slip over the end of a pipe and are then welded to both the pipe and the flange.o Applications: Suitable for low-pressure applications and easier alignment.3. Blind Flanges:o Description: Blind flanges are used to close the end of a pipe or vessel. They do not have a central hole and are used to seal off a pipeline.o Applications: Used for pipeline termination and to provide access to the interior of a pipeline or vessel.4. Socket Weld Flanges:o Description: Socket weld flanges are used for small-diameter pipes and are fitted into the socket of the flange and welded in place.o Applications: Common in high-pressure and high-temperature services.5. Threaded Flanges:o Description: Threaded flanges have internal threads that match the external threads of a pipe, allowing for easy installation without welding.o Applications: Used in applications where welding is not feasible or desirable.6. Lap Joint Flanges:o Description: Lap joint flanges consist of two components: a backing flange and a loose flange that fits over the backing flange.o Applications: Used in applications where frequent dismantling is required for maintenance.Specifications and Characteristics of A105 Flanges:1. Material Composition:o Chemical Composition:? Carbon: 0.35% max? Manganese: 0.60-0.90%? Phosphorus: 0.035% max? Sulfur: 0.040% max? Silicon: 0.15-0.35%o Physical Properties:? Yield Strength: 36,000 psi (250 MPa) min? Tensile Strength: 70,000-90,000 psi (485-620 MPa)? Elongation: 20% min in 8 inches (200 mm)? Hardness: Typically 85-95 HRB2. Dimensions and Tolerances:o Flange Sizes: Available in standard sizes from 1/2 inch to 24 inches and larger, depending on the application.o Pressure Classes: Typically available in classes 150, 300, 600, 900, 1500, and 2500, aligning with ANSI B16.5 and ANSI B16.47 standards.o Bolt Pattern: Dimensions for bolt circle diameter, number of bolt holes, and bolt hole diameter are specified in ANSI B16.5 and ANSI B16.47.o 3. SPECFICATIONS:• Manufacturing Range: DN 15 (1/2”) to DN 1500 (60”)• Rating/Class: 150/300/600/900/1500/2500 & PN 10/16/25/40/63/100 etc.• Dimension Standard: ANSI/ASME B16.5/B16.47/B16.36/B16.48/DIN/EN 1092-1, etc.• Face Finish: Raised Face (RF) Finish, Flat Face (FF) Finish, Ring Type Joint (RTJ) Finish• Material Type: CARBON/ALLOY STEEL: ASTM/ASME A105/105N, ASTM / ASME A182, ASTM / ASME A335 GR F1, F5, F9, F11, F12, F22, F23, F91Summary of Equivalent Grades for ASTM A105 Carbon Steel FlangesDIN Standards:DIN 1629 St37.0DIN 17100 St37.2JIS Standards:JIS G3452 STPG 370JIS G3101 SS400API Standards:API 5L Grade BBS Standards:BS 3601 Grade 360AASME Standards:ASME SA105