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Low Temperature Carbon Steel ASTM A350 LF2 Forged & Fittings are specially designed for applications that require excellent toughness and durability at sub-zero temperatures. Manufactured according to ASTM A350 standards, LF2 material ensures reliable performance in extreme conditions, making it an ideal choice for industrial piping systems, valves, and flanges.
ASTM A350 LF2 is a low carbon steel alloy with controlled amounts of manganese, silicon, phosphorus, and sulfur. This composition provides superior mechanical strength while maintaining ductility at low temperatures. The material undergoes strict forging processes to achieve uniformity, structural integrity, and resistance to brittle fracture under harsh operating conditions.
ASTM A350 LF2 forged carbon steel and fittings are specifically designed for low-temperature applications. These materials provide excellent toughness, durability, and strength at sub-zero temperatures, making them ideal for industries such as oil and gas, petrochemical, and power generation, where safety and reliability are critical.
A350 LF2 carbon steel primarily consists of iron with controlled levels of carbon, manganese, phosphorus, and sulfur. Nickel may be added in certain grades to enhance low-temperature impact toughness. This carefully engineered composition ensures the material maintains structural integrity and resists brittle fracture under sub-zero conditions.
LF2 forged fittings are widely used in oil and gas, petrochemical, and power generation industries. They are suitable for pipelines, pressure vessels, and components exposed to cold environments, ensuring safe operation without compromising performance. Common fittings include elbows, tees, reducers, and flanges, all engineered for precision and durability.
The key advantages of ASTM A350 LF2 include excellent impact toughness, high tensile strength, and long service life even in cryogenic conditions. These fittings are easy to install, corrosion-resistant, and maintain their structural integrity under fluctuating temperatures. This makes them a reliable solution for both critical and standard low-temperature applications.
A350 LF2 forged fittings offer excellent mechanical properties. Yield strength typically ranges from 205–275 MPa, with tensile strength between 415–620 MPa depending on the specific grade. Charpy V-notch impact tests confirm high toughness at temperatures as low as –50°C, making them reliable for cryogenic and low-temperature systems.
While ASTM A350 LF2 is not inherently corrosion-resistant like stainless steel, it performs adequately in controlled environments. Protective coatings, galvanization, or painting can enhance resistance against rust and atmospheric corrosion, making it suitable for pipelines and industrial process systems where exposure is limited.
Specification Table
| Specification | Details |
|---|---|
| Standard | ASTM A350 / ASME SA350 |
| Material Type | Low Temperature Carbon Steel |
| Grade | LF2 |
| Product Form | Forged Fittings |
| Applications | Industrial piping, valves, flanges, oil & gas, petrochemical, and power generation industries |
| Properties | Excellent toughness, ductility, and impact resistance at sub-zero temperatures |
| Available Shapes | Elbows, tees, reducers, flanges, and other forged fittings |
| Testing | Chemical composition, mechanical properties, impact toughness |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.20 max |
| Manganese (Mn) | 0.60 – 1.20 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
| Silicon (Si) | 0.10 – 0.35 |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Ultimate Tensile Strength (UTS) | 485 MPa min |
| Yield Strength (YS) | 250 MPa min |
| Elongation (in 50mm) | 20% min |
| Impact Test (Charpy V-notch) | -46°C (-50°F) |
| Hardness | 170-210 HB |
Equivalent Grades
| Standard/Specification | Equivalent Grade |
|---|---|
| EN 10222-2 | 1.0460 |
| BS 1501 | 434A32 |
| DIN 1715 | GS-C25 |
| JIS | SCM435 |
| IS | 513 Part 2 Gr. 250 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Size (inches) | Weight (kg) | Dimensions (mm) |
|---|---|---|
| 1/2" | 0.5 | 12.7 x 50 |
| 1" | 1.2 | 25.4 x 60 |
| 2" | 3.5 | 50.8 x 70 |
| 3" | 6.8 | 76.2 x 80 |
| 4" | 9.0 | 101.6 x 90 |
| 6" | 18.0 | 152.4 x 110 |
| 8" | 28.5 | 203.2 x 130 |
| 10" | 45.0 | 254.0 x 150 |
Types Of Low Temperature Carbon Steel ASTM A350 LF2 Forged & Fittingss and Fittingss
SS S32760 Seamless Pipe
SS S32760 Welded Pipe
SS S32760 ERW Pipe
SS S32760S EFW Pipe
Low Temperature Carbon Steel A420 WPL6 WPL3S Seamless Fittings
S32760H Super Duplex Steel Welded Fittings
S32760 Super Duplex Steel Capillary Fittings
S32760H Super Duplex Steel Heat Exchanger Fittingss
Frequently Asked Questions (FAQ)
What is ASTM A350 LF2?
ASTM A350 LF2 is a low temperature carbon steel forging material designed to provide excellent toughness, ductility, and impact resistance in sub-zero environments.
Where are LF2 forged fittings used?
These fittings are widely used in industrial piping systems, valves, and flanges, particularly in oil, gas, petrochemical, and power generation industries.
Can ASTM A350 LF2 withstand extremely low temperatures?
Yes, LF2 material is tested for impact toughness at temperatures as low as -46°C (-50°F), ensuring reliable performance in cold operating conditions.
What types of fittings are available?
Common LF2 forged fittings include elbows, tees, reducers, and flanges, all manufactured to precise ASTM A350 specifications for durability and safety.
Pipes & Fittingss Supplier
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