Steel C45 Round Bar is an unalloyed medium carbon steel, which is also a general carbon engineering steel. C45 is a medium strength steel with good machinability and excellent tensile properties. C45 round steel is generally supplied in the black hot rolled or occasionally in the normalised condition, with a typical tensile strength range 570 – 700 Mpa and Brinell hardness range 170 – 210 in either condition. It does not however respond satisfactorily to nitriding due to a lack of suitable alloying elements.
C45 round bar steel is equivalent to EN8 or 080M40. Steel C45 bar or plate is suitable for the manufacture of parts such as gears, bolts, general-purpose axles and shafts, keys and studs.
1. Supply Range of Steel C45 Round Bar
- C45 Steel Round Bar: diameter 8mm – 3000mm
- C45 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
- C45 Steel Flat Bar: 200mm – 1000mm
- Square C45 Steel: 20mm-800mm
- Hexagon Steel.
Surface Finish: Black, Rough Machined, Turned or as per given requirements.
Typical applications of C45 grade steel
- Axles
- Spindles
- Studs
- Shafts
- Knives
- Automotive components
- General engineering components
Chemical composition
Variant Cast Weldability C % Si % Mn % P % S % Cr % Ni % Mo % V % Ti % Cu % Al % DI % SB8673 CC CEV 0.71max Min 0.46 0.15 0.70 - 0.020 0.25 0.10 - - - - 0.020 1.70 Pcm 0.55max Max 0.49 0.35 0.80 0.020 0.035 0.30 0.20 - - - 0.25 0.040 2.00 SB1672 CC CEV 0.72max Min 0.42 0.10 0.50 - 0.020 - - - - - - - 1.10 Pcm 0.55max Max 0.50 0.40 0.90 0.045 0.045 0.40 0.40 0.10 - - - - 1.80 SB1671 CC CEV 0.58max Min 0.42 0.15 0.50 - 0.035 - - - - - - - 1.20 Pcm 0.51max Max 0.50 0.40 0.80 0.045 0.050 - - - - - - - 1.60 5081 CC CEV 0.72max Min 0.42 0.10 0.50 - 0.020 - - - - - - - 1.10 Pcm 0.55max Max 0.50 0.40 0.90 0.030 0.035 0.40 0.40 0.10 - - - - 1.80 5155 CC CEV 0.72max Min 0.44 0.10 0.50 - - - - - - - - - 1.10 Pcm 0.55max Max 0.49 0.40 0.80 0.030 0.025 0.40 0.40 0.10 - - - - 1.80 047A IC CEV 0.76max Min 0.46 0.15 0.50 - 0.020 - - - - - - 0.015 - Pcm 0.6max Max 0.50 0.40 0.80 0.030 0.030 0.25 0.25 0.10 0.100 0.005 0.25 0.030 - C45 EN ISO 683-1 Std CEV max Min 0.42 0.10 0.50 - - - - - - - - - - Pcm max Max 0.50 0.40 0.80 0.045 0.045 0.40 0.40 0.10 - - 0.30 - - The Di-value is in inches.
Mechanical Properties
Variant Condition Format Dimension [mm] Yield strength min [MPa] Tensile strength [MPa] Elongation A5 [%] Reduction of area Zmin [%] Hardness Impact (ISO-V) strengthmin Rp0.2 * Reh, ** Rel SB1672 < 16 320** 590-740 14 - 165-220 HB - 16 < 40 310** 590-740 14 - 165-220 HB - 40 < 63 300** 590-740 14 - 165-220 HB - 63 < 120 280** 590-740 14 - 165-220 HB - 5081 +AR Round bar 20 < 160 - - - - < 230 HB - +QT Round bar 20 < 40 430** 650-800 16 40 190-240 HB 20 °C 25 J (long) Round bar 40 < 100 370** 630-780 17 45 185-235 HB 20 °C 25 J (long) 5155 +AR Round bar 25 < 180 - - - - < 230 HB - +QT Round bar 25 < 40 430** 650-800 16 40 190-240 HB 20 °C 25 J (long) Round bar 40 < 100 370** 630-780 17 45 185-235 HB 20 °C 25 J (long) 047A +U Tube,wall 10 < 36 320 650 typical 16 - 200 HB typical - Tube,wall 36 < 60 300 630 typical 16 - 200 HB typical - Tube,wall > 60 280 600 typical 16 - 200 HB typical - Round bar 10 < 36 320 650 typical 16 - 200 HB typical - Round bar 36 < 60 300 630 typical 16 - 200 HB typical - Round bar < 60 280 600 typical 16 - 200 HB typical - +N Tube,wall < 10 320 660 typical 16 - 190 HB typical - Tube,wall 10 < 50 300 630 typical 16 - 190 HB typical - Tube,wall < 50 280 600 typical 16 - 190 HB typical - Round bar < 10 320 660 typical 16 - 190 HB typical - Round bar 10 < 50 300 630 typical 16 - 190 HB typical - Round bar < 50 280 600 typical 16 - 190 HB typical - +QT Tube,wall 10 < 40 370 690-770 14 - 210-240 HB - Round bar 10 < 40 370 690-770 14 - 210-240 HB - Transformation temperatures
Temperature °C MS 305 AC1 725 AC3 760 Heat treatment recommendations
Treatment Condition Temperature cycle Cooling/quenching Hot forging +U 800-1150°C
In still air
Normalizing +N 840-870°C
In still air
Soft annealing +SA 650-700°C
In still air
Stress relieve annealing +SRA 550-650°C
In still air
Quench & Tempering +QT 840-870°C
In oil Temper immediately
Quench & Tempering +QT 820-850°C
In water Temper immediately
Induction or Flame hardening I-F 870-900°C
In oil Temper immediately
Hardenability
Other properties (typical values)
Youngs module (GPa) Poisson´s ratio (-) Shear module (GPa) Density (kg/m3) 210 0.3 80 7800 Average CTE 20-300°C (µm/m°K) Specific heat capacity 50/100°C (J/kg°K) Thermal conductivity Ambient temperature (W/m°K) Electrical resistivityAmbient temperature (µΩm) 12 460 - 480 40 - 45 0.20 - 0.25 If you need product information or price, please fill in your contact information in the form below, we will usually contact you within 12 hours. You could also email me info@lyapm.com to get prompt reply.
1. Stock view
2. Processing and Technology for heating processingCutting processing Quenching Tempering Annealing
3. Quality testing1. Inspection InstitutionShanghai Fuda Testing Technology Group Co., LTD. Nanjing BranchFocus on analysis, testing, testing, r & D four service areas. Analysis fields include component analysis, formula analysis, failure analysis, structure analysis, methodology development and validation, raw material quality control/evaluation, consistency evaluation, feature analysis and other directions; The testing field involves physical and chemical properties testing, toxic and harmful substances testing, flame retardant performance testing, reliability testing and other directions; The testing field involves energy spectrum, electron microscope, spectrum, chromatography, mass spectrometry and other directions; The r&d field involves formula development, formula upgrading, formula customisation, cooperative research and development and other directions.
Beijing Zhongke Chemical Technology Research InstituteIt is a chemical technology research institution based on scientific research and testing. They adhere to paying equal attention to basic research and applied research, and combining applied research and technology transformation, developing into a comprehensive research institute characterised by "task-oriented disciplines". Approved by the relevant national departments, the company has become a third-party analysis and testing technology service unit, and has obtained CMA qualification certification. It has carried out research and development and design, analysis and testing, test and verification, generic processing, information and intellectual property services, providing public services for innovation of technology-based enterprises. Supported by the government innovation Fund, the institute has been awarded as a national high-tech enterprise.
2.Inspection Machining
Metal composition testing machine Computerised Materials Torsion Testing Machine Metal bar composite rod bending tensile strength testing machine
3. Material test certificate
4. Packaging
In the steel export activities, we also need to pack the steel to prevent the steel from being scattered in the transportation process. In the hoisting process, it is necessary to lift the steel. So steel is very necessary in the export process. Below is the picture of packaging：
According to the requirements of the state of steel materials, the use of binding, bare, frame, pallet.
Packing standard: according to the following national standard requirements (the parts beyond the requirements will be specified separately)
GB／T191 packaging-pictorial marking for handling of goods
GB／T4857 (all parts) basic test for transport packages
GB／T4879 rustproof packaging
GB／T5048 damp-proof packing
GB／T7350water-proof packing
GB／T8166 Package cushioning design
GB/T4892-1996 Hard straight square transport packaging size series
GB/T13201-91 Cylinder transport package size series
GB/T16471-1996Design and make the size limit of transport package
5. Logistic
By SEA By Air By Express
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1. Company profile
Luoyue Precision Metal established in 2018, is a leading Stockists and global distributor for Metal Raw Materials like Steel/Aluminum/ Stainless steel/Copper/ Nickel Rods, Bars, Plates, Sheets,Pipes, fittings, fasteners, Inconel alloys, Wire and Wire-Mesh to customers from aerospace, automotive, electronics, precision manufacturing, ordnance, marine, shipbuilding, oil & gas, power plant and construction.
The company has a high-precision, high-efficiency modern processing site, CNC machine tools and complete testing and inspection technology, and introduces international advanced technologies.
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