What is SA350 LF2 CL.1？
A350 LF2 belongs to American standard low temperature steel forgings, and the executive standard is ASTM A350/A350M
A350 LF2 belongs to carbon steel and low alloy steel forgings requiring notch toughness test for pipe components, corresponding material for piping in ASTM A333 Grade 6 and pipe fittings in ASTM A420 WPL6. With yield strength minimum 240 Mpa, and tensile strength in 480 Mpa to 655 Mpa, impact test temperature at -45℃.
Long Weld Neck Flange SA 350 LF2 CL1 RF B16.5
The chemical composition of A350 LF2 is as follows:
| Carbon,max | Manganese | Phosphorus,max | Sulfur,max | Silicon | Nickel | Chromium | Molybdenum | Copper | Niobium | Vanadium |
| 0.30 | 0.60-1.35 | 0.035 | 0.040 | 0.15-0.30 | 0.40 max | 0.30 max | 0.12 max | 0.40 max | 0.02 max | 0.08 max |
CL1 refers to the forging grade, it has nothing to do with the chemical composition.
A350 LF2 CL1 is common material for American Standard Flanges. This kind of flange is mainly used for low temperature pipe connection. Hebei Haihao supplies a lot of products for Singapore shipyard every year. For most of the flanges, the end user requires the A350 LF2 CL1 as material.
They even have some special requirements for the chemical composition:
chemical composition of A350 LF2
But we can match all the requirements of the client. We supply a lot of flanges with high quality to our client.
If you have needs for this kind of flanges, please contact with us without hesitation.