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The range of products of C45 Round Bar which we offer to our customers are of high quality and these round bars are used for making machineries and OEM Auto components. These products have been made keeping in mind the quality parameters which have been set by the industry in the market. C45 Steel Round Bars are always supplied with the test certificates and can be supplied in bulk quantity as well as retail quantity as per customers requirements. C45 round bars are supplied by us to various engineering and forging industries.
AISI C45 steel is medium tensile steel supplied in the black hot rolled or normalized condition. It has Brinell hardness ranging between 170 and 210 and tensile strength of 570 – 700 MPa. AISI C45 steel has good machinability, good weldability, and high strength and impact properties in either the normalized or hot rolled condition. C45 steel has a low through-hardening capability with only sections of size around 60 mm being recommended as suitable for tempering and through-hardening. However, it can be efficiently flame or induction hardened in the normalized or hot rolled condition to obtain surface hardnesses in the range of Rc 54 – Rc 60 based on factors such as section size, type of set up, quenching medium used etc.
DIN C45 round bar steel material and steel plate C45, flats are widely used in all industry for uses which require more strength and wear resistance than the low carbon mild steel.
Quenched and subsequently tempered steel for C45 steel grade round bar, steel plate, flat and square is used for axles, bolts, forged connecting rods, crankshafts, torsion bars, light gears, guide rods, screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc.
|Standard||ASTM A29||EN 10083-2||JIS G4051||AS 1442|
Addition to other grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, OHNS, D2, D3, H-11, H-13, CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3.
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The following table shows the chemical composition of C45 steel:
|Content(%)||0.420 – 0.50||0.60-0.90||≤ 0.040||≤ 0.050||98.51-98.98|
The mechanical properties of annealed DIN C45 carbon steel are outlined in the table below
Tensile strength σb (MPa): ≥600 (61)
Yield strength σs (MPa): ≥355 (36)
Elongation δ5 (%): ≥23
Reduction of area ψ (%): ≥55
Impact energy Akv (J): ≥98
Impact toughness αkv (J / cm2): ≥49 (5)
Hardness: no heat treatment, ≤229HB; annealed steel, ≤197HB
Sample size: Sample size is 25mm
min. 55 HRC
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 heat treatment 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.
Heat the component slowly to 820-860°C and allow it to be heated through. Quench in oil or water.
Temper immediately after quenching whilst tools are still hand warm. Re-heat the C45 to the tempering temperature then soak for one hour per 25 millimeter of total thickness (2 hours minimum) Cool in air. For most applications temper between 550-660°C.
Modulus of elasticity [103 x N/mm2]: 205
Density [g/cm3]: 7.85
Specific heat capacity[J/g.K]: 0.48
|Thermal Conductivity (W/m-K)||42.7||100|
|Specific Heat (J/kg-K)||477||50-100|
Preheat the steel carefully, then raise the temperature to 1100°C for forging. Do not forge below 850°C. After forging cool slowly, preferably in a furnace.
Heat to 550°C – 660°C (1022°F – 1220°F)
Hold until the temperature is uniform
Soak for 1 hour per 25mm of section
Cool in still air
|Normalizing:||840 – 880°C/air|
Heat slowly to 680-710°C, soak well. Cool slowly in the furnace.
|Density (*1000 kg/m3)||7.7-8.03||25|
This grade of alloy is readily machined following suitable cooling from forging or subsequent heat treatment.
This steel may be welded by normal fusion methods, but prior to carburizing or hardening and tempering.
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