1.2714 Heat-Resistant Hot Work Tool Steel for Molds

Product Overview

1.2714 steel is a premium hot work tool steel renowned for its balanced performance in high-temperature environments. Compliant with DIN 17350 standards, it is widely recognized under equivalent grades across global standards, including ISO 55NiCrMoV7 (European), ASTM A681 L6 (American), and GB/T 1299 5CrNiMo (Chinese). This alloy is engineered to deliver superior heat resistance, exceptional toughness, and enhanced wear resistance—key properties that make it indispensable for manufacturing molds and tools operating under severe thermal and mechanical stress.

The unique composition of 1.2714 sets it apart: nickel and chromium boost toughness and hardenability, while molybdenum and vanadium enhance wear resistance and tempering stability. This combination ensures the steel maintains high strength and durability even in continuous high-heat applications, making it a preferred choice for industries requiring reliable performance in extreme conditions.

Features

Alloy Composition Advantages

The chemical makeup of 1.2714 is carefully formulated to optimize performance. Key elements include:

· Carbon (0.50-0.60%): Ensures hardness and strength.

· Chromium (1.0-1.2%): Enhances corrosion resistance and hardenability.

· Nickel (1.50-1.80%): Improves toughness, critical for withstanding impact in forging processes.

· Molybdenum (0.45-0.55%) and Vanadium (0.07-0.12%): Work together to boost wear resistance and tempering stability, preventing softening at high temperatures.

Compared to similar grades, 1.2714 offers a more balanced blend of these elements, reducing the risk of cracking under thermal cycling—a common issue in lesser hot work steels.

Heat Treatment & Hardness

Proper heat treatment amplifies 1.2714’s capabilities:

· Annealed (+A): Maximum hardness of HB248, ensuring ease of machining.

· Cold-drawn: Maximum hardness of HB262, suitable for precision forming.

· Hardened and Tempered (+HT): Minimum hardness of HRC42, providing the strength needed for heavy-duty applications.

The steel responds well to controlled heating (840-860°C) and oil quenching, followed by tempering at 490-510°C, resulting in uniform hardness across the material.

Manufacturing

1.2714 is produced using advanced steelmaking processes, including EF+LF+VD and EAF+LF+VD+ESR, ensuring purity and consistency. Forging is performed within a strict temperature range (initial: 1050-1100°C; final: ≥850°C) to avoid grain coarsening or cracking, followed by slow cooling to relieve internal stress.

Applications

1.2714 excels in diverse high-stress scenarios, thanks to its versatility:

Hot Work Dies

· Heavy Forging Dies: Ideal for hammer and press forging of large components like automotive crankshafts and connecting rods, where repeated high-impact loads and elevated temperatures are common.

· Extrusion Dies: Used in hot extrusion of non-ferrous metals (aluminum, copper), maintaining shape stability despite prolonged contact with molten materials.

· Die Casting Dies: Suitable for zinc, aluminum, and magnesium alloy casting, resisting erosion from molten metals and thermal fatigue.

Cold Work Tools

· Stamping Dies: Efficient for blanking and forming thick metal sheets, leveraging high toughness to prevent chipping.

· Shear Blades: Reliable for cutting sheet metal, with wear resistance extending tool life.

· Cold Heading Dies: Produce high-strength fasteners (bolts, nuts) by withstanding the pressure of cold forming.

Plastic Molds

· Large Injection Molds: Shapes engineering plastics (nylon, ABS) with precision, even in high-volume production.

· Blow Molds: Manufactures PET bottles and plastic containers, resisting wear from repeated contact with molten plastic.

Other Industrial Uses

· Machine Tool Cutters: Serves as heavy-duty cutter bodies and fixtures, enduring high cutting forces.

· Wear Parts: Rolls and guide bushings benefit from its wear resistance, reducing maintenance needs.

· Aerospace Components: Used in high-stress structural parts, where reliability under extreme conditions is non-negotiable.

FAQ

Is 1.2714 available in stock?

Currently, 1.2714 is not stocked for domestic markets, but custom orders are available in various sizes (hot rolled bars: Φ10-Φ190mm; hot forged plates: T70-250mm) to meet specific requirements.

What ultrasonic testing standards does 1.2714 meet?

It complies with EN10228-3 class III or Sep 1921-84 D/D, ensuring internal integrity and reliability in critical applications.

Technical Parameters

Steel Equivalents

Chemical Composition (%)

Supply Size & Tolerance