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…”

astm-a350-lf2-carbon-steel
ASTM A350 LF2 flange

TYPE:
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0.1 TYPE:
1 Nominal Composition of ASTM A350 LF2
2 Mechanical Properties of ASTM A350 LF2
3 General Scope
Carbon steel applied in cold temperature service usually used in the normalised 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.