ASTM A350 LF2 Carbon Steel
ASTM A350-LF2 Temperature range (-50 to 800 deg. F) Where corrosion resistance is not important.
This material is heat treated “Forgings of [LF2] shall be furnished in the normalized, or in the normalized and tempered, or in the quenched and tempered condition…”
TYPE: Carbon steel applied in cold temperature service usually used in the normalized condition.
Nominal Composition of ASTM A350 LF2
Element | Weight % |
Carbon | 0.30 max |
Silicon | 0.15 – 0.30 |
Manganese | 0.6 – 1.35 |
Phosphorus | 0.35 max |
Sulphur | 0.040 max |
Molybdenum | 0.12 max |
Copper | 0.40 max |
Chromium | 0.30 max |
Nickel | 0.40 max |
Vanadium | 0.08 max |
Niobium | 0.02 max |
Mechanical Properties of ASTM A350 LF2
Condition: Forgings of LF2 shall be furnished in the normalized, or in the normalized and tempered, or in the quenched and tempered condition.
Property | Values |
Ultimate Tensile Strength | 485 – 655 N/mm2 |
0.2% Yield Strength | 250 N/mm2 min |
Elongation | 22% min |
Reduction of Area | 30% min |
Charpy Impact Toughness | 20 average / 16 min J at -46o C |
Hardness | 197 HB |
General Scope
A general carbon steel used in the manufacture of flanges and fittings.