C45
C45
C45 Grade Steel Strips & Sheets
C45 steel is an unalloyed medium carbon steel grade with reasonable tensile strength. It is normally supplied in the cold drawn or as rolled condition. Tensile properties can vary but are usually between 500-800 N/mm². C45 is widely used for applications which require better properties than mild steel but does not justify the costs of an alloy steel. C45 can be flame or induction hardened to produce a good surface hardness with moderate wear resistance. C45 is available from stock in bar and can be cut to your requirements. We also offer flame cut plates cut to your required sizes and normalised. C45 plates can be supplied surface ground or precision ground.
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Form of Supply
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Hot Rolled
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Cold Rolled
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Applications
C45 is widely used for many general engineering applications. Typical applications include shafts, studs, bolts, connecting rods, screws, rollers.
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Chemical Compositions
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Flame Cut Profiles
West Yorkshire Steel are suppliers of C45 flame cut steel profiles. A hard edge can occur when flame cutting C45 plate, therefore this grade is commonly normalised after flame cutting. C45 flame cut profiles can be supplied Lumsden ground or precision ground.
Annealing
Heat slowly to 680-710°C, soak well. Cool slowly in the furnace.
Hardening
Heat the component slowly to 820-860°C and allow it to be heated through. Quench in oil or water.
Tempering
Temper the C45 component immediately after quenching whilst tools are still hand warm. Re-heat the C45 component to the tempering temperature then soak for one hour per 25 millimetre of total thickness (2 hours minimum) Cool in air. For most applications tempering of C45 will be between 550-660°C.
Heat Treatment
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each C45 steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of C45 carbon steel.