C45 / C1045 Carbon Steel – Properties, Applications & Supply | Nifty Alloys

C45 / C1045 Carbon Steel is one of the most widely used medium carbon grades of steel, offering an excellent combination of strength, toughness, and machinability. It has approximately 0.45% carbon and is suitable for application in cases where there is a requirement for good wear resistance and strength without the cost of high-alloy steels.

Also referred to as AISI 1045, EN 1.0503, or DIN 1.1191, C45 steel is a common engineering product used in the automotive, machinery, and construction industries.

We are niftyalloys, an international supplier and exporter of C45 / C1045 Carbon Steel in form of bars, rods, plates, billets, flats, and sheets. With in-stock availability and worldwide shipping, we supply industries with high-quality C45 steel based on their requirements.

What is C45 Medium Carbon Steel?

C45 is a medium carbon steel grade with approximately 0.45% carbon content. It is also known as AISI 1045, EN 1.0503, or DIN 1.1191.

Because of its balanced composition, C45 offers a combination of:

• Medium tensile strength (570–700 N/mm² in normalized condition)
• Good machinability in the annealed state
• Excellent wear resistance after heat treatment
• Flexibility for heat treatment (can be quenched and tempered to increase hardness up to ~55 HRC)

In simple terms: C45 Medium Carbon Steel is widely used in automotive, machinery, and engineering applications where components require strength, toughness, and durability at an economical cost.

Key Features & Benefits of C45 Carbon Steel

• Medium tensile strength and toughness
• Good machinability in the annealed condition
• Can be heat treated for higher hardness
• Good wear resistance
• Weldable with proper preheating and precautions
• Economical alternative to alloy steels