ASTM A105/ASTM A350-LF2 Dual grade Material
ASTM A105 and ASTM A350 LF2 are two of the most commonly used carbon steel forging materials for flanges, fittings, valves, and pressure components.
This guide explains the differences between ASTM A105 and ASTM A350 LF2 in terms of chemistry, mechanical properties, temperature limits, application.But they also have lots of character in common.
A105 for ambient and higher-temperature service;
ASTM A350-LF2 for low-temperature service with Charpy V-Notch impact energy testing. Both of them are widely used in Components include flanges, various fittings and valves
- Material Composition:
- ASTM A105: A105 is a specification for carbon steel forgings intended for use in pressure systems at ambient and higher-temperature service conditions. It typically contains carbon (0.35% max), manganese (0.60-1.05%), phosphorus (0.035% max), sulfur (0.040% max), and silicon (0.10-0.35%).
- ASTM A350 LF2: A350 LF2 is a specification for low-temperature carbon steel forgings for use in low-temperature service applications. It has a similar chemical composition to A105 but with stricter limits on sulfur and phosphorus content. A350 LF2 typically contains carbon (0.30% max), manganese (0.60-1.35%), phosphorus (0.035% max), sulfur (0.040% max), silicon (0.15-0.35%), and copper (0.40% max) as an optional element.
- Mechanical Properties:
- ASTM A105: A105 has specified mechanical properties including tensile strength, yield strength, and elongation, which vary depending on the forging class and size. It is suitable for use in moderate-temperature applications.
- ASTM A350 LF2: A350 LF2 is specifically designed for low-temperature service applications and has enhanced toughness compared to A105. It typically has lower maximum tensile and yield strengths compared to A105 but exhibits superior impact resistance at low temperatures.
ASTM A105 & ASTM A350-LF2 DUAL CERTIFIED
ASTM A105 ASTM A350 LF2 round bar
dual certified as both ASTM A105 and ASTM A350 LF2, it means that it meets the requirements of both specifications.
We can supply ASTM A105 Flange & ASTM A350-LF2 Flanges,ASTM A105 Forged fittings & ASTM A350-LF2 Forged fittings
⬇️ Download ASTM A105 standard latest Edition Now (PDF)
⬇️ Download ASTM A350 standard latest Edition Now (PDF)
A105/A350-LF2 Dual grade
| ASTM A105 & ASTM A350-LF2 DUAL CERTIFIED | a Special Quality Fine Grain Carbon-Manganese Steel for Piping Components | |||||||||||||||||||||||||||||||||
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| ASTM A105 & ASTM A350-LF2 DUAL CERTIFIED | Mechanical Properties |
| Spec | A105 | A350-LF2 | A105/A350-LF2 |
| Tensile Strength Min, psi | 70,000 | 70,000-95,000 | 70,000-95,000 |
| Tensile Strength Min, N/mm² | 485 | 485-655 | 485-655 |
| Yield Strength Min, psi | 36,000 | 36,000 | 36,000 |
| Yield Strength Min, N/mm² | 250 | 250 | 250 |
| Elongation (%) | 22 | 22 | 22 |
| Reduction of Area (%) | 30 | 30 | 30 |
| Hardness, maximum | 187 | 15/12 ft-lbs | 15/12 ft-lbs |
| CVN at -50℉ | 20/16 joules | 20/16 joules |
Learn more of ASTM A350 LF2 and ASTM A105 Products
ASTM A350 LF2 Weld neck flanges
