X37CrMoV5-1 / 1.2343 Tool Steel

Forms of delivery of steel circle 1.2343 / 4X5MFS

Steel 1.2343 / X37CrMoV5-1 / 4Х5МФС: Properties, Applications, and Features

✅ General Technical Characteristics

Steel 1.2343 (X37CrMoV5-1, 4Х5МФС) is a hot-work tool steel known for its high strength at elevated temperatures and excellent resistance to thermal shock. It possesses good toughness and thermal conductivity, making it ideal for applications involving high thermal loads.

Main Characteristics:

• High strength at elevated temperatures.
• Excellent resistance to thermal shock.
• Good toughness and thermal conductivity.
• Resistance to wear and oxidation.
• Good machinability and polishability.

🔬 Chemical Composition (%):

• Carbon (C): 0.33–0.41
• Silicon (Si): 0.8–1.2
• Manganese (Mn): 0.25–0.50
• Chromium (Cr): 4.8–5.5
• Molybdenum (Mo): 1.1–1.5
• Vanadium (V): 0.3–0.5

This composition provides an optimal balance between strength, hardness, and resistance to thermal loads.

🏭 Applications

Due to its outstanding properties, 1.2343 steel is widely used in the manufacture of tools and components subjected to high thermal and mechanical stresses.

Main Application Areas:

• Forging dies and tools.
• Hot cutting knives.
• Hot extrusion tools.
• Punches and dies.
• Screws and pins.
• Components of die-casting molds.

📊 Mechanical Properties

• Hardness after annealing: ≤ 229 HB
• Hardenability: Good
• Machinability: 5 (on a scale from 1 to 10, where 10 is excellent machinability)

The steel has good machinability, allowing for efficient use in the production of complex tools.

⭐ Features

• Thermal Conductivity: Ensures uniform heat distribution, reducing the risk of thermal cracking.
• Wear Resistance: Extends tool life under intensive use.
• Polishability: Allows achieving high surface quality, which is important for certain applications.
• Weldability: Limited; preheating and subsequent heat treatment are recommended to prevent cracking.

1.2343 steel is an optimal choice for the production of tools operating under high temperatures and requiring high resistance to thermal shock and wear.