This grade is primarily used in forged steel components for piping systems requiring performance across low-temperature, ambient, and elevated-temperature service conditions. It is commonly supplied to ASME SA-105, which covers carbon steel forgings for general piping applications, as well as ASME SA-350, which specifies carbon and low-alloy steel forgings requiring notch toughness testing for improved performance in lower temperature service.
At Double Eagle Alloys, this material represents one of the most widely stocked grades in our inventory and is available in both bare and zinc-plated finishes. Supplied for long bar and header plug applications, it delivers the strength, machinability, and reliability required for demanding service environments. Its combination of mechanical properties, specification compliance, and broad availability makes it a dependable choice for components used in oil and gas, power generation, and petrochemical systems, particularly where pressure containment and consistent performance under varying operating conditions are required.
Available Products
ASME SA-105/SA-350 Grade LF2 Chemical Composition
Chemical Composition (wt%) limits of ASME SA-105/SA-350 Grade LF2 steel*
| Carbon | 0.30 | Molybdenum | 0.12 |
| Manganese | 0.60-1.05 | Phosphorus | 0.035 |
| Silicon | 0.15-0.30 | Sulfur | 0.040 |
| Copper | 0.40 | Vanadium | 0.08 |
| Chromium | 0.30 | Columbium | 0.02 |
| Nickel | 0.40 |
*Maximum, unless range is indicated
ASME SA-105/SA-350 Grade LF2 Physical Properties
| Density, lb/in3 | 0.284 |
| Modulus of Elasticity, psi | 29 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 6.39 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 30.0 |
| Specific Heat, Btu/lb ˚F | 0.116 |
| Electrical Resistivity, Microhm-in | 6.42 |
SA-105/SA-350 Grade LF2 Mechanical Properties
Mechanical property requirements for annealed bar product as specified in ASTM
| Yield Strength, min. (ksi) | 36 |
| Tensile Strength, min. (ksi) | 70-95 |
| Elongation, min. (%) | 22 |
SA-105/SA-350 Grade LF2 Standards
Typical standards for SA-105/SA-350 Grade LF2
| ASME SA-105 |
| ASME SA-350 Grade LF2 |
Your Source for SA-105/SA-350 Grade LF2
At Double Eagle Alloys, we supply SA-105/SA-350 Grade LF2 in long bar and header plugs engineered for these demanding services. Contact our team to learn how SA-105/SA-350 Grade LF2 can support long-term performance and reliability.
Questions? We’d love to help. Contact us today to discuss your needs or to check current availability.
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Data shown are typical and provided for informational purposes only. Values should not be considered minimums or maximums for specification or final design. Actual product data may vary, and information may be revised without notice.