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ASTM A350 LF1 Forged Fittings
ASTM A350 LF1 Forged Fittings Manufacturer and Supplier in India
ASTM A350 LF1 Forged Fittings are used in small-bore pressure connections where the piping system could be subjected to moderate sub-zero temperatures. LF1 has a special impact resistance requirement at a temperature of −29°C (−20°F), whereas regular carbon steel fittings do not. The grade is covered by ASTM A350/A350M and ASME SA350, and is typically sized according to ASME B16.11 for forged fittings. It is designed for medium-low cold applications, not for deep cold applications. Solitaire Overseas Manufactures and Supplies ASTM A350 LF1 Forged Fittings in the required size and configuration in India, and material testing & documentation are available to support project-specific requirements and low-temperature pressure piping.
Technical Data
Specifications of ASTM A350 LF1 Forged Fittings
| Specification Parameter | Details |
|---|---|
| Standard | ASTM A350 / ASME SA350 |
| Grade | LF1 |
| Type | Carbon Steel (Low Temperature Service) |
| Product Forms | Forged flanges, forged fittings, valves, and other pressure parts |
| Forging Method | Open Die / Closed Die / Ring Rolled |
| Heat Treatment | Normalized, Quenched & Tempered |
| Size Range | NPS ½” to 48” (Flanges & Fittings) / Dia 10mm to 300mm (Bars) |
| Pressure Rating | Class 150 to 2500 |
| Standards Covered | ASME B16.5, B16.47, B16.11, MSS-SP-79, 83, 95 |
Chemical Compositions of ASTM A350 LF1 Forged Fittings
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) | Copper (Cu) |
|---|---|---|---|---|---|---|---|---|---|
| Percentage (%) | 0.30 max | 0.60–1.35 | 0.035 max | 0.040 max | 0.15–0.30 | 0.40 max | 0.30 max | 0.12 max | 0.40 max |
ASTM A350 LF1 Forged Fittings Mechanical Properties
| Property | Tensile Strength (min) | Yield Strength (min) | Elongation (min) | Reduction of Area (min) | Impact Energy (Charpy V-Notch) |
|---|---|---|---|---|---|
| Value | 415 MPa | 205 MPa | 22% | 35% | 27 J min at -46°C |
Physical Properties of ASTM A350 LF1 Forged Fittings
| Property | Density | Melting Point | Modulus of Elasticity | Thermal Conductivity | Specific Heat |
|---|---|---|---|---|---|
| Value | 7.85 g/cm³ | 1450°C (approx.) | 200 GPa | 43 W/m·K | 486 J/kg·K |
Equivalent Grades of ASTM A350 LF1 Forged Fittings
| Standard | EN | DIN | BS | JIS | ISO |
|---|---|---|---|---|---|
| Equivalent Grade | C22.8 | 1.0460 | 1503-161-400 | SF440 | P245GH |
Application and Industrial Uses of ASTM A350 LF1 Forged Fittings
- Wellhead Piping Systems
- Gas Gathering Systems
- Hydrocarbon Transfer Lines
- Process Skid Piping
- Compressor Station Piping
- Boiler Feedwater Piping
- Fuel Gas Piping Systems
- Heat Exchanger Piping Connections
Frequently Asked Questions
ASTM A350 LF1 Forged Fittings are carbon steel fittings designed for pressure piping with moderate low-temperature service.
They are used in oil and gas, petrochemical, process piping, and other pressure systems exposed to sub-zero temperatures.
The required Charpy impact test temperature is −29°C (−20°F).
LF2 generally provides higher strength and different low-temperature requirements than LF1, making it suitable for more demanding service conditions.
Yes. They can be welded using suitable welding procedures and proper preheating and post-weld controls.
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