ASME SA965 F304 Forged Disk and SA266 Gr.2 Ring for Heat Exchanger Components
Product Overview
ASME SA965 F304 forged disk and ASME SA266 Gr.2 forged ring are customized steel forgings manufactured for heat exchangers, pressure vessels, and associated industrial equipment.
The product range includes two different forged component types:
- ASME SA965 F304 Austenitic Stainless Steel Forged Disk
- ASME SA266 Gr.2 Carbon Steel Forged Ring
These components can be supplied as individual forgings or manufactured as part of a customized heat exchanger component package according to engineering drawings.
The final product geometry may include outside diameter, inside diameter, thickness, machining allowance, bolt holes, sealing surfaces, grooves, bores, and other design-specific features.
ASTM A965/A965M covers austenitic stainless steel forgings for pressure and high-temperature parts, including F304, while ASTM A266/A266M covers carbon steel forgings for boilers, pressure vessels, and associated equipment.
ASME SA965 F304 Forged Stainless Steel Disk
Austenitic Stainless Steel Forging
Material Standard: ASME SA965 / ASTM A965
Material Grade: F304
Material Type: Austenitic Stainless Steel Forging
Product Form: Forged Disk / Round Forging
F304 is covered by ASTM A965/A965M as an austenitic stainless steel forging grade for pressure and high-temperature parts. The specification applies to forgings used in equipment such as boilers, pressure vessels, and associated components.
Depending on the applicable specification edition and purchase requirements, the F304 forged disk can be supplied after the required heat treatment and machining process.
Typical Machining Features
The forged disk can be machined with:
- Central bore
- Bolt holes
- Tube holes
- Sealing surface
- Gasket groove
- Counterbore
- Recess
- Customized profiles
The final configuration should follow the approved equipment drawing.
ASME SA266 Gr.2 Forged Carbon Steel Ring
Carbon Steel Pressure Vessel Forging
Material Standard: ASME SA266 / ASTM A266
Material Grade: Grade 2
Material Type: Carbon Steel Forging
Product Form: Forged Ring
ASTM A266/A266M covers four grades of carbon steel forgings for boilers, pressure vessels, and associated equipment. The material is produced through hot-working and forging, with chemical and mechanical property requirements specified by the applicable standard.
The SA266 Gr.2 ring can be manufactured with customized:
- Outside diameter
- Inside diameter
- Height
- Wall thickness
- Machining allowance
- Sealing face
- Bolt hole configuration
Disk and Ring Configuration
Forged Disk
A forged disk is generally a solid or machined circular forging.
Depending on the equipment design, it may be further machined into components with:
- Central openings
- Tube holes
- Bolt holes
- Grooves
- Sealing surfaces
Forged Ring
A forged ring has a central opening and can be manufactured with customized inner and outer diameters.
It may be used as part of:
- Pressure equipment assemblies
- Heat exchanger connections
- Flange-type components
- Structural support components
- Customized forged equipment parts
The final application depends on the approved engineering design.
Manufacturing Process
Material Preparation
The appropriate forging material is selected according to the required component:
- SA965 F304 for the stainless steel disk
- SA266 Gr.2 for the carbon steel ring
Material traceability can be maintained through heat number identification and material certification.
Forging
The material is forged into the required disk or ring blank with sufficient allowance for final machining.
The forging process is selected according to factors such as:
- Component diameter
- Final thickness
- Forging weight
- Machining allowance
- Required geometry
Heat Treatment
Heat treatment is carried out according to the applicable material specification and purchase requirements.
ASTM A965/A965M specifies requirements for austenitic stainless steel forgings, while ASTM A266/A266M provides heat-treatment requirements for carbon steel pressure vessel forgings depending on the specified material condition.
CNC Machining
After forging and applicable heat treatment, the components can be machined according to engineering drawings.
Typical operations include:
- OD machining
- ID boring
- Facing
- Thickness machining
- Bolt hole drilling
- Groove machining
- Surface finishing
Available Dimensions
The existing product information indicates that forged disks can be supplied in approximately:
- Diameter: 350 mm to 2500 mm
- Thickness: 45 mm to 650 mm
- Weight: 200 kg to 6000 kg
Final dimensions should be determined according to the engineering drawing and component design.
| Parameter |
Specification |
| Disk OD |
Customized |
| Disk Thickness |
Customized |
| Ring OD |
Customized |
| Ring ID |
Customized |
| Ring Height |
Customized |
| Machining Allowance |
According to Drawing |
| Bolt Holes |
Customized |
| Surface Machining |
According to Requirement |
Product Specifications
| Item |
Specification |
| Product Name |
Forged Disk and Forged Ring |
| Disk Standard |
ASME SA965 / ASTM A965 |
| Disk Material Grade |
F304 |
| Ring Standard |
ASME SA266 / ASTM A266 |
| Ring Material Grade |
Gr.2 |
| Manufacturing |
Forging + Heat Treatment + Machining |
| Dimensions |
Customized According to Drawing |
| Application |
Heat Exchanger & Pressure Equipment Components |
Applications
Heat Exchanger Components
The forged disks and rings can be manufactured for customized heat exchanger assemblies where the equipment design specifies stainless steel and carbon steel forged components.
Possible applications include:
- Heat exchanger structural components
- Channel-side components
- Flange-type forgings
- Cover components
- Support components
- Customized machined pressure equipment parts
The final application should be determined by the component drawing, pressure design, operating temperature, and process medium.
Pressure Vessel Equipment
Both material standards are associated with pressure equipment forgings:
- A965 F304 for austenitic stainless steel pressure and high-temperature forgings
- A266 Gr.2 for carbon steel boiler and pressure vessel forgings
This makes the material combination suitable for equipment designs that require different materials for different components rather than using a single material throughout the assembly.
Quality Control and Inspection
Material Inspection
Inspection can include:
- Chemical composition analysis
- Mechanical property testing
- Heat number traceability
- Material certificate review
- PMI when specified
Dimensional Inspection
Inspection parameters may include:
- Outside diameter
- Inside diameter
- Thickness
- Height
- Bore dimensions
- Bolt hole dimensions
- Groove dimensions
- Machining tolerances
Non-Destructive Testing
According to project requirements, the components can be supplied with:
- Ultrasonic Testing (UT)
- Magnetic Particle Testing (MT)
- Liquid Penetrant Testing (PT)
ASTM A266 includes supplementary requirements where additional testing or inspection is individually specified by the purchaser.
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