SAE 1045 Steel Bar

SAE1045 steel bar is a medium carbon steel which is characterized by good weldability, good machinability, high strength and impact properties in either the normalized or hot forged condition. SAE1045 steel bar is widely used for axles, bolts, forged connecting rods, crankshafts, torsion bars, light gears, guide rods etc.

SAE 1045 Steel Bar Chemical Composition per ASTM A29

GRADE	C	Si	Mn	P	S
1045	0.43-0.50	0.15-0.35	0.60-0.90	≤ 0.040	≤ 0.050

SAE 1045 Steel Bar Size&Tolerance&Process

Shape	Size(mm)	Process	Tolerance	Length(mm)
Round	Φ6-Φ50	Cold Drawn	H11	3000-5800
Round	Φ40-Φ300	Hot Rolled	-0/+3mm	3000-10000
Round	Φ120-Φ1000	Hot Forged	-0/+3mm	3000-10000
Flat/Square/Block	Thickness:120-800 Width:120-1500	Hot Forged	-0/+3mm	500-6000

SAE 1045 Steel Bar Heat Treatment

Normalizing For SAE1045
1.Nominal normalizing temperature:850-870°C
2.Hold the temperature for several hours
3.Cooling in the air

Annealing For SAE1045
1.Nominal Annealing temperature:680-710°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 197

Hardening and Tempering(QT) For SAE1045
1.Nominal Hardening temperature:840-870°C
2.Hold at this temperature then quench in oil or water
3.Tempering as soon as possible when the temperature low to ambient
4.Heat uniformly to the suitable temperature of 600-640°C
5.keep the material out of the furnace ,then cool in the air

Mechanical Property( for reference only)

1.Tensile strength: 600MPa
2.Yield point: 360MPa
3.Percentage reduction of area after fracture: 40%
4.Elongation after fracture: 16%
5.Impact test (+20°C): Transverse – 14-25J; Longitud – 36~48J

Delivery Condition

1.Shape:Round/Square / Flat/Shafts/Rollers/Blocks
2.Surface condition:Black surface/Bright surface
3.Heat Treatment:Normalized/Annealed/QT
4.Straightness:Max 3mm/m(Enhanced straightness may be available on request)
5.Length:3000-5800mm suitable for 20″container. above 6000mm,suitable for 40″ container
6.Grain Size: 5-8 acc to ASTM E112-96
7.Ultrasonic Standard: Sep1921/ASTM A388/EN 10228-3
8.Typical Hardness:HRC55
9.Non Metallic Inclusion: 2 max acc to ASTM E45 /K4≤20 acc to DIN 50602
10.Forging Ratio: minimum 4 : 1
11.Marking: Grade/Weight/Length/Size/Heat Number

Quality Certification

A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.NDE test method/criteria

SAE1045 Steel Bar manufacturers and suppliers,delivered in round rods,square/flat bars,rollers,shafts,blocks and forging pieces