1045 S45c C45 4140 Carbon Steel Cold Rolled Steel Round Bar

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Plate
• Surface Treatment: Polished
• Model NO.: Round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000 Ton/Year

Product Description

About Product

C45 steel 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 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 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.

Chemical Composition(%)

C	Mn	P	S	Si	Ni	Cr
0.42-0.50	0.50-0.80	0.03	0.035	0.4	0.4	0.4

 

Mechanical Properties of C45 Round Bar Steel Material

Mechanical Properties in Quenched+Tempered Condition

Diameter d (mm)	Thickness t (mm)	0.2 % proof stress (N/mm^2)	Tensile strength (N/mm^2)	Elongation A5 (%)	Reduction Z (%)
<16	<8	min. 490	700-850	min. 14	min. 35
<17-40	<8<=20	min. 430	650-800	min. 16	min. 40
<41-100	<20<=60	min. 370	630-780	min. 17	min. 45

Mechanical Properties in Normalized Condition

Diameter d (mm)	Thickness t (mm)	0.2 % proof stress (N/mm^2)	Tensile strength (N/mm^2)	Elongation A5(%)
<16	<16	min. 390	min. 620	min. 14
<17-100	<16<=100	min. 305	min. 305	min. 16
<101-250	<100<250	min. 275	min. 560	min. 16

Forging of Carbon Steel C45 Round Bar

Hot forming temperature: 850-1200oC.

Pre heat to 750 oC - 800 oC, then continue heating to 1100 oC - 1200 oC maximum, hold until
temperature is uniform throughout the section and commence forging immediately. Forging is not
workable below 850 oC. Finished forgings could be air cooled.

We are strong on forged steel C45 round bar. Welcome enquiry of C45 steel materials.

Heat Treatment

Forging or hot rolling:	1100 - 850°C
Normalising:	840 - 880°C/air
Soft annealing:	680 - 710°C/furnace
Hardening:	820 - 860°C/water, oil
Tempering:	550 - 660°C/air

Hardening of DIN C45 Steel 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.

 

Application of DIN Carbon Steel C45 Round Bar

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.

Welcome customers to inquiry DIN C45 round bar, CK45/1.1191 steel plate, flat steel for C45 steel price.
We are professional supplier and exporter for more than 20 years. We offer you worldwide solution for 
C45 steel.