1.2510 Material Detailed Information

1.2510 is a high-carbon tool steel that belongs to the high-speed steel family. It is known for its excellent hardness, wear resistance, and high tempering resistance at elevated temperatures. 1.2510 is often used in cold work tooling, cutting tools, and cold forming dies due to its superior wear resistance and ability to maintain hardness in abrasive environments.

This steel is particularly favored in industries that demand high-performance materials for tooling applications exposed to extreme mechanical stress and high temperatures.

Key Features

  • Excellent Hardness: 1.2510 achieves very high hardness after heat treatment (up to 65 HRC), making it ideal for tooling exposed to abrasive wear.
  • High Wear Resistance: The material has excellent wear resistance and is highly suitable for cutting tools, dies, and forming tools that need to maintain sharpness under extreme conditions.
  • Tempering Resistance: Retains high hardness even at elevated temperatures, making it resistant to temper softening.
  • High Strength: With a high tensile and yield strength, 1.2510 performs well under high-stress applications.
  • Good Hot Hardness: Maintains its hardness at elevated temperatures, which is essential for tools used in high-temperature processes such as hot stamping and forging.
  • Moderate Toughness: While it offers good hardness and wear resistance, it may be more prone to brittleness compared to tougher tool steels, especially in highly impact-resistant applications.

Chemical Composition

ElementComposition (%)
Carbon (C)0.90 – 1.05
Silicon (Si)0.20 – 0.50
Manganese (Mn)0.30 – 0.60
Chromium (Cr)4.50 – 5.50
Molybdenum (Mo)5.00 – 6.00
Vanadium (V)1.80 – 2.20
Phosphorus (P)≤ 0.030
Sulfur (S)≤ 0.030

Note: 1.2510 contains high chromium, molybdenum, and vanadium content, which enhance its wear resistance and hardness.

Mechanical Properties

PropertyValue
Hardness (Annealed)≤ 220 HB
Hardness (Hardened & Tempered)62 – 65 HRC
Tensile Strength~1,300 – 1,400 MPa
Yield Strength~1,100 MPa
Elongation6 – 10%
Impact ToughnessModerate

1.2510 vs. D2 vs. H13 (AISI)

Property1.2510D2 (AISI)H13 (AISI)
Hardness (Tempered)62-65 HRC58-62 HRC48-52 HRC
Wear ResistanceExcellentExcellentGood
ToughnessModerateModerateExcellent
Hot HardnessGoodGoodExcellent
MachinabilityGoodModerateModerate

Applications

1.2510 is widely used in cold work tooling applications, including:

  • Cutting tools such as saws, drills, and cutting blades that are exposed to high mechanical stress and abrasive wear.
  • Cold forming dies and extrusion dies for metalworking and plastic molding where wear resistance and hardness are critical.
  • Punches, stamps, and blanking dies in industries requiring tools that maintain sharp edges and resist wear.
  • Press tools and shearing tools used in applications where abrasive wear is common.
  • High-performance tooling in automotive, aerospace, and manufacturing industries.

Heat Treatment Process

Annealing

  • Heat to 800–850°C and slowly cool to soften the material and relieve internal stresses.

Hardening

  • Heat to 1,050–1,100°C for proper soaking time and quench in oil or air to achieve high hardness.

Tempering

  • Heat to 500–550°C to achieve the desired hardness of 62–65 HRC for tooling applications.

Surface Treatment

  • Nitriding or PVD coating can be applied to improve surface hardness and wear resistance in applications involving high friction or abrasive contact.

Alternative Materials

  • D2 (AISI): A high-carbon, high-chromium tool steel similar to 1.2510, but with slightly lower hardness and better toughness compared to 1.2510.
  • H13 (AISI): A hot work tool steel with excellent hot hardness and toughness but lower wear resistance than 1.2510. H13 is more suited for high-temperature applications.

Conclusion

M2 (AISI): A high-speed steel that provides excellent hardness and wear resistance but with slightly lower toughness compared to 1.2510.