ASTM A350 Flange
SSM supplies Carbon Steel A350 Low Temp Forged Flanges
A350 Low Temp Forged Flanges
SSM offers carbon steel and low alloy steel forged flanges compliant with ASTM A350. These flanges are commonly utilized in applications requiring resistance to low temperatures and low-temperature impact toughness, such as the storage and transportation of cryogenic liquids. Their outstanding performance and reliability have garnered widespread recognition. If you have further questions about ASTM A350 flanges or require additional technical support, please don’t hesitate to contact us.
SSM provides product parameters as shown in the following table:
| Types | WN/LWN/SO/SW/Blind/Lap Joint Flange … |
| Class | 150#-2500# / PN6-PN100 |
| Size | 1/2″-48″ / DN10-DN1000 |
| Sealing Surface | RF FF RTJ TF GF LF LM |
| Coating | Vanish, yellow paint, anti-rust oil, galvanizing etc |
| Standard | ASME B16.5 / ASME B16.47 / DIN / EN1092-1:2002 / BS 4504 BS 10 TableD/E … |
| Material | ASTM A350 LF2 LF3 LF6… |
Chemical Composition & Mechanical Properties
SSM provides various grades of low-temperature carbon and low-alloy steel flanges and fittings, including A350 LF2, A350 LF3, and A350 LF6. Here are the detailed chemical composition and mechanical properties of these materials.
| Element | ASTM A350 LF2 | ASTM A350 LF3 | ASTM A350 LF6 |
| Carbon (C) | 0.21 – 0.28 | 0.20 – 0.28 | 0.10 – 0.20 |
| Manganese (Mn) | 0.60 – 1.35 | 0.60 – 1.35 | 0.60 – 0.90 |
| Silicon (Si) | 0.15 – 0.35 | 0.15 – 0.35 | 0.15 – 0.35 |
| Sulfur (S) | Max 0.035 | Max 0.035 | Max 0.035 |
| Phosphorus (P) | Max 0.035 | Max 0.035 | Max 0.035 |
| Chromium (Cr) | Max 0.30 | 0.30 – 0.60 | 0.25 – 0.55 |
| Molybdenum (Mo) | Max 0.12 | Max 0.12 | Max 0.15 |
| Nickel (Ni) | Max 0.40 | Max 0.40 | Max 0.40 |
| Vanadium (V) | Max 0.08 | Max 0.08 | Max 0.08 |
| Property | ASTM A350 LF2 | ASTM A350 LF3 | ASTM A350 LF6 |
| Tensile Strength | Min 70,000 psi (485 MPa) | Min 70,000 psi (485 MPa) | Min 65,000 psi (450 MPa) |
| Yield Strength | Min 36,000 psi (250 MPa) | Min 36,000 psi (250 MPa) | Min 30,000 psi (205 MPa) |
| Elongation | Min 22% | Min 22% | Min 22% |
| Impact Toughness | Min 27 ft-lb (36 J) @ -50°F (-45°C) | Min 27 ft-lb (36 J) @ -50°F (-45°C) | Min 27 ft-lb (36 J) @ -50°F (-45°C) |
ASTM A350 & Low Temperature Impact Testing
ASTM A350 materials must undergo low-temperature impact tests, such as Charpy impact tests, to confirm their low-temperature toughness. This is essential because the material’s toughness and impact resistance can significantly decrease in low-temperature environments.
The process of conducting a low-temperature impact test, such as the Charpy impact test, involves the following steps:
1. Specimen preparation: A standard-size specimen (usually a rectangular rod) is cut from the material, and a V- or U-shaped notch is machined in the middle of it.
2. Cooling the specimen to a specified low temperature, typically using liquid nitrogen or dry ice.
3. Impact testing: The cooled specimen is subjected to an impact using a pendulum impact testing machine, and the energy absorbed is measured. The testing machine strikes the specimen with a pendulum, and the energy absorbed during the fracture reflects the material’s toughness.
4. Recording and analyzing results: The energy absorbed by the specimen at low temperature is recorded and compared with the standard requirements to evaluate whether its low-temperature toughness meets the specification.
These tests ensure that the materials are safe and reliable for actual low-temperature applications, meet engineering design and specification requirements, and contribute to quality control and material certification.
Advantages and Disadvantages of ASTM A350
Please remember the following information about the ASTM A350 flange we provide: It is made of low-temperature carbon steel and is typically used in applications that require high toughness and performance at low temperatures. Here are the advantages and disadvantages of ASTM A350 flanges:
Advantages:
– Excellent performance at low temperatures, maintaining good toughness and strength.
– Suitable for high-pressure and high-stress environments.
– More cost-effective compared to other low-temperature alloy materials.
Disadvantages:
– Less corrosion-resistant than stainless steel flanges.
– Additional protection measures such as coating or galvanizing may be required in corrosive environments.
– Regular inspection and maintenance are necessary.
Applications of ASTM A350 Flange
- Oil and Gas
- Chemical Industry
- Power Generation
- Shipbuilding
- General Industry
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