1.2714 Hot Work Mould Steel

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1.2714 Hot Work Mould Steel

1.2714 tool steel is a high-performance hot-work tool steel, exhibiting excellent toughness, thermal fatigue resistance and hardenability. It is widely used in the manufacture of large forging dies, hot-cutting blades, extrusion tools and thermoplastic moulds. Through specific annealing, hardening and tempering heat treatment processes, its mechanical properties can be further optimised.

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1.2714 tool steel is a high-performance hot-work tool steel, exhibiting excellent toughness, thermal fatigue resistance and hardenability. It is widely used in the manufacture of large forging dies, hot-cutting blades, extrusion tools and thermoplastic moulds. Through specific annealing, hardening and tempering heat treatment processes, its mechanical properties can be further optimised.

 

เกรดเทียบเท่าGBDINเอไอเอสไอJISGOST
5CrNiMoV1.2714L6SKT45ХНМ2
องค์ประกอบทางเคมีซีซีMnCrพี (ตัวอักษร)เอสวีNiโม
0.50-0.600.10-0.400.65-0.951.0-1.2≤0.03≤0.030.07-0.121.50-1.800.45-0.55
ขนาดที่มีจำหน่ายเหล็กกลมเส้นผ่านศูนย์กลางความยาว
10-1800mm2000-6000 มม.
เหล็กแบนความหนาความกว้างความยาว
10-1200mm100-2200mm2000-6000 มม.
สภาพพื้นผิวผิวสีดำ/ ขัด/ กลึง
ความแข็งแบบอบอ่อนHB248MAX
ลักษณะhigh plasticity, good hardenability , .good tenacity and strength, with great wear resistance
การประยุกต์ใช้Forging dies,hot shear knives,punches,backing plate,die holders,hot punching tools
Heat treatmentIsothermal annealingHeat to 800°Cand hold at temperature for 1/2 h to 1 h;
Furnace cooling to 670°Cand hold at temperature for at least 10 hours;
Cool by 10°C/h to 630°C;
Cooling in air.
Maximum hardness:≤240 HB
Stress relievingTo be carried out after maching before the final heat treatment.
Heat to 600-650°C, hold for 4-6 hours;
Cooling in furnace to 300-350°C;
Cooling in air
HardeningInitial preheating to 350-450°C;
Second preheating to 650-750°C;
Heat to hardening temperature 860-890°Cand hold at temperature;
Cooling in hot oil (40-60°C); oil quenched hardness: 54-59HRC;
TemperingTempering must be carried out within one hour from hardening(warm part) in
the range 550-630°Cfor 4-6 hours according to hardness required, the
dimensions of the parts and operating conditions

 

Core Advantages: Engineered for High-Temperature Strength and Toughness

The exceptional performance of 1.2714 tool steel stems from its meticulously balanced chemical composition and optimised heat treatment process:

Exceptional Thermal Stability and High-Temperature Strength: A special alloy composition confers outstanding resistance to tempering softening. Even under sustained operating temperatures of 500-600°C, it maintains high hardness and strength, effectively resisting high-temperature softening and deformation. This significantly extends service life in processes such as hot forging and hot extrusion.

Superior toughness: High strength does not equate to brittleness. 1.2714 steel possesses balanced toughness reserves, effectively absorbing impact energy. This substantially reduces the risk of fracturing or chipping during rapid thermal cycling or unexpected overload conditions, ensuring production safety and mould reliability.

Superior wear resistance and thermal fatigue resistance: 1.2714 excels under the scouring action of molten metal flow and repeated thermal stress cycles. Its outstanding wear resistance minimises cavity wear while maintaining dimensional accuracy. Exceptional thermal fatigue resistance effectively suppresses the initiation and propagation of thermal cracks (crazing), preventing premature mould failure due to thermal stress.

Superior Quenchability and Machinability: Its excellent quenchability ensures consistent, high-quality performance even in large-section moulds. Concurrently, its favourable machinability and surface polishability facilitate the production of complex, precision mould cavities while meeting demands for high-finish components.

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