Complaint
1: 1045 steel introduction
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.
2: 1045 Steel equivalent
| Country | Japan | British | Australia | USA |
| Standard | JIS G4051 | EN10083-2 | AS 1442 | ASTM A29 |
| Grade | S45C | C45/1.1191 | 1045 | 1045 |
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 1045 | 0.43-0.5 | 0.4 | 0.6-0.9 | 0.04 | 0.05 | / | / | / |
| 1.1191 | 0.42-0.5 | 0.4 | 0.5-0.8 | 0.03 | 0.035 | / | / | / |
| S45C | 0.42-0.48 | 0.15-0.35 | 0.6-0.9 | 0.03 | 0.03 | / | / | / |
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
5: 1045 steel overviews
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm | |
| Width 20mm-1000mm | ||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
| Application | 1045 carbon steels are 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. | |
6: Hardening
Harden from a temperature of 820-860oC followed by water or oil quenching.
Heat to 820 oC - 850 oC hold until temperature is uniform throughout the section, soak for 10 - 15 minutes per 25mm of section, and quench in water or brine. Or,
Heat to 830 oC - 860 oC soak as above and quench in oil.Temper immediately while still hand warm.
Surface hardness for C45 special steel round bar after flame or induction hardning:
Steel Name Steel number Surface Harndess
C45 1.1191 min. 55 HRC
7: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
For Cold Drawn bar, usually the delivery condtion is cold drawn, annealed/QT, peeled/black surface
For hot rolled plate, usually the delivery condition is hot rolled, annealed, milled/black surface
For hot forged plate, usually the delivery condition is hot forged, normalized/annealed, milled/black surface.
