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Steel 1045（Medium Carbon Steel）

Material Type：Metal
Material Name：Steel 1045
Alternative Names：AISI 1045 | UNS G10450 | EN C45 | JIS S45C
Process Compatibility：CNC Milling, CNC Turning, Forging, Heat Treatment
Steel CNC Machining Service的副本
Steel 1045
Description
Steel 1045 is a medium-carbon steel with higher strength and hardness than 1018. With around 0.45% carbon, it is widely used in engineering applications where strength and wear resistance are more important than extreme ductility. It can be heat-treated to improve hardness and fatigue resistance.
Lead Time: < 10 days
Wall Thickness: 0.75 mm
Tolerances: ±0.005″ (±0.125mm)
Max Part Size: 200 cm x 80 cm x 100 cm
 
Classification of Metal Performance Parameters
Mechanical Properties Ultimate Tensile Strength 625
Yield Strength 530
Young’s Modulus / Elasticity 205
Elongation at Break 16
Hardness HB 170
Fatigue Strength 280
Physical Properties Density 7.87
Corrosion Resistance Poor
Magnetism Magnetic
Weldability Fair
Impact Toughness Moderate
Thermal Properties Maximum Service Temperature 450
Thermal Expansion Coefficient 11
Thermal Conductivity 49.8
Creep Resistance Moderate
Electrical Properties Electrical Resistivity 16
Electrical Conductivity 9
Dielectric Strength N/A
Processing & Surface Treatment Machinability Fair
Surface Finish Compatibility Good
Formability Fair
Special Properties Biocompatibility No
Flame Retardancy Yes
UV Resistance Low
Recyclability Yes

Introduction to Steel 1045

What
Steel 1045 (AISI 1045) is a medium-carbon steel that provides a good balance of strength, toughness, and wear resistance. It can be heat-treated through quenching and tempering, making it suitable for mechanical parts that require higher strength than low-carbon steels. Its machinability is moderate, and welding requires preheating to reduce cracking risk.
Advantages
Higher tensile strength than 1018
Can be quenched and tempered for enhanced hardness
Good wear resistance compared to low-carbon steels
Widely available and cost-effective for engineering
 
 
 
Applications
Gears and shafts
Bolts and studs
Automotive and agricultural machinery parts
Tooling components
 
 
 

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