ASME SA266 Gr.2 Forged Flanges Manufacturer
We specialize in manufacturing and supplying ASME SA266 Gr.2 forged flanges ,ASME SA266 Gr.2 Girth Flanges
ASTM A266 Grade 2 flanges are forged carbon steel components designed for use in boilers, pressure vessels, and related high-temperature and high-pressure applications. These flanges are known for their durability and mechanical strength.
Flange type available in material SA266 Gr.2
Weld Neck Flanges (WNRF)
Slip-On Flanges (SORF)
Socket Weld Flanges (SWRF)
Blind Flanges (BLRF)
Threaded Flanges
Lap Joint Flanges
Long Weld Neck Flanges
Girth Flanges
Flange Standard Available in material SA266 Gr.2
Sizes, Standards & Pressure Ratings
- Size Range: ½″ to 60 ″ nominal bore (NB)
- Standards: ANSI/ASME B16.5, B16.47 Series A & B, BS4504, EN-1092, DIN,
- Pressure Classes: 150#, 300#, 600#, 900#, 1500#, 2500#,
ASME SA266 Gr. 2 /ASTM A266 Gr. 2 is a low to intermediate forged carbon steel grade that is commonly used for pressure vessel components such as tubesheets, flanges, and fittings.
ASTM A266 Grade 2 Chemical Composition:
| Standard | SA266 Gr.2 |
| Chemical composition(%) | |
| Carbon (C) | 0.30 max |
| Manganese (Mn) | 0.40~1.05 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Silicon (Si) | 0.15~0.35 |
| Tensile Strength (MPa) | 485~655 |
| Yield Strength (MPa) | 250 min |
| Elongation (%) | 18 min |
| Reduction Area (%) | 33 min |
Mechanical Property
| Mechanical properties | Grade 2 |
| Tensile strength, min. Mpa | 485-655 |
| Yield strength, min. Mpa | 250 |
| Elongation in. 2 or 50 mm, min, ％ | 20 |
| Reduction of area, min. ％ | 33 |
Applications
ASTM A266 Grade 2 flanges are widely used in industries such as:
- Petrochemical and chemical
- Power generation
- Shipbuilding
- Spare parts for Heat exchangers
Standard Testing Requirements for ASME SA266 Grade 2 Forged Flanges
According to the ASTM A266/A266M specification, the following tests and inspections are mandated for SA266 Grade 2 forged flanges:
1. Chemical Analysis
- Heat Analysis: Performed on samples taken according to Specification A788/A788M to ensure compliance with chemical composition requirements.
- Product Analysis:
2. Mechanical Testing
3. Hardness Testing
4. Supplementary Requirements
The specification provides several supplementary requirements that may be invoked by the purchaser:
- S4: Magnetic Particle Examination
- S5: Liquid Penetrant Examination
- S9: Hardness Testing
- S10: Grain Size Determination
- S13: Impact Tests
Want to know Difference between ASME SA 105 and SA266 Gr.2 ?
Both ASME SA105 and ASME SA266 are the most common grade for forgings . Both of these are carbon steel grades used in various high-pressure applications, but they have distinct properties and uses.
