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ASTM A350 LF2 ASME SA350 LF2 Forged forging Steel Round Bars Rods Square rectangle rectangular Flat Bars(Sa-350 Sa 350 Lf2 Cl1 Class 1 CL2 Sa-350-LF2 SA-350LF2CL2 ASTM A350 A 350 LF2 Class 1 Cl1 )
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ASTM A350 LF2 ASME SA350 LF2 ASME Sa350 Sa-350 GR.LF2 Sa 350 Lf2 Class 1 Cl1 CL2 Class 2 Sa-350-LF2 Sa 350 LF2 SA350 GR.LF2 SA-350LF2CL2 ASTM A350-LF2 Grade LF2 ASTM A350 A 350 LF2 Class 1 Cl1 ASTM A350LF2 ASTM A 350 GR LF2 CL1 Forged forging Steel Round Bars Rods Square rectangle rectangular Flat Bars from china
ASTM A350 Grade LF2 is a general Carbon steel usually supplied in the Normalised, Normalised and Tempered or Quench and Tempered condition.
It is typified by having moderate strength and impact toughness and is used extensively for the manufacture of flanges and fittings, and applications which require cold temperature service where corrosion resistance is not important.
Forging
Forging Temperature for this material should be 900 – 1200oC
Soak times should be kept to a minimum to avoid heavy scaling, but sufficient time should be given to allow centre to achieve furnace temperature.
After forging pieces should be allowed to cool in still air.
Typical Chemical composition
Carbon <0.30%
Silicon 0.15 – 0.30%
Manganese 0.60 – 1.35%
Phosphorous <0.035%
Sulphur <0.040%
Chromium <0.30 %
Molybdenum <0.12%
Copper <0.40%
Niobium <0.02%
Vanadium <0.08%
Heat Treatment
Normalising – Heat to 860 - 920°C for a time commensurate with ruling section, Air cool (If Required)
Hardening – Heat to 890 – 960oC for a time commensurate with ruling section and quench in Water.
Tempering – Re-heat to 590oC Minimum as required, dependent on final required properties. Hold for a time commensurate with the ruling section and cool in still in air
Machining
ASTM A350 LF2 has good to very good machinability, dependent on condition, and operations such as sawing, turning, broaching, milling etc can be accomplished satisfactorily using standard machine tool manufacturers recommended speeds and feeds.
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