AISI 1045 Carbon Steel Bar

AISI 1045 Carbon Steel round bar

ASTM AISI 1045 Steel is a medium carbon, medium tensile steel supplied as hot rolled, forged or normalized. Otai special steel supply 1045 round bar, plate, steel rods, steel bars, hexagonal bar, flat bar, square, pipe/tube. Regarding the specific dimension, please contact our professional team?for any AISI 1045 Steel Round Bar.

1045 has good strength and impact properties, plus good machinability and reasonable weldability in the hot rolled or normalised condition. it?has a low through hardening capability with sections up to around 60mm only generally recommended as suitable for through hardening and tempering. However 1045 steel can be successfully flame or induction hardened in the as rolled or normalised condition resulting in surface hardnesses of up to Rc 54 – Rc 60 depending upon the quenching medium employed, the type of set up and section size etc. Core strengths will not change.

Related Specifications ASTM A29/29M-1999 1045 steel bar plate flat hexagonal pipe

Chemical composition of AISI 1045 round bar?and?equivalent steel grade

ASTM A29/29M C Si Mn P S
1045 0.43~0.50 / 0.60~0.90 ≤0.040 ≤0.050
DIN W-Nr C Si Mn P S
1.1191/CK45 0.42~0.50 ?≤0.40 0.50~0.80 ≤0.035 ≤0.035
GB/T C Si Mn P S
45 0.42~0.50 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035
BS C Si Mn P S
080M46 0.42~0.50 ≤0.40 0.50~0.80 ≤0.035 ≤0.035
S45C 0.42~0.48 0.15~0.35 0.60~0.90 ≤0.030 ≤0.030


Medium Carbon Steel 1045 Form of Supply

we can supply the?round 1045 steel bar, 1045 steel flat bar, plate, hexagonal bar and square steel block. Diameters can be sawn to your required lengths as one offs or multiple cut pieces. Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances..

1045 steel Applications

AISI 1045 carbon Steel have Wide range applications. It is used to?different types of Axles, Bolts, Connecting Rods, Hydraulic Clamps and Rams, Pins Various, Rolls Various, Studs, Shafts, Spindles etc.

AISI 1045 steel equivalent steel grade

  • Japanese steel standard JIS S45C
  • German steel standard DIN CK45 W N-r 1.1191
  • Chinese steel standard GB ?45
  • England steel standard BS 080M46

AISI 1045 Steel Regular size and Tolerance

AISI 1045 Steel Round bar: Diameter 5mm to 1700mm

JIS S45C Steel Plate: Thickness 2mm to 1400mm x with 200-2300mm ?x length 19800 mmm Max.

DIN 1.1191 Steel Flat bar: 2mm -105mm x 5mm-110mm x lengthSteel Hexagonal bar: HEX 5mm to 110mm x Length 12000mm MAX

Others have not specified size, pls contact our?experienced sales team.

Heat treament of SAE AISI 1045 steel

at 850°C – 1250°C, Hold until the temperature is uniform, Then Cool in furnace

Heat to 800°C – 850°C , Slowly, Then Hold the temperature until uniform; Cool in heat treatment furnace.


Heat to 870°C – 920°C, Soak evenly, about Soak for 10 – 15 minutes, then Cool in air

Stress Relieving

Heat to 550°C – 660°C, Hold the temperature, Soak enough time, until thoroughly heat, then Cool in still air


Heat to 820°C – 850°C, Soak for 10 – 15 minutes per 25mm of section, Quench in water or brine


Re-heat to 400°C – 650°C as needs, Soak aboput 1 hours per 25mm of section, Cool in air.


ASTM 1045 Carbon steel round bar and flat sections can be cut to your required sizes. AISI 1045 Carbon steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. SAE 1045 Carbon steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Contact our experienced sales team to help you with your 1045 round bar Carbon steel questions

by?Email or Telphone.?The 1045 steel questions and inquiry will be reply in 24 hours.



Tel: 0086 769?23190193

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