What is 1.2767 steel?

1.2767 is a high-performance tool steel designed specifically for precision molds under harsh working conditions. 1.2767 steel has excellent wear resistance while maintaining excellent toughness through special metallurgical processes and heat treatment techniques, making it particularly suitable for precision forming needs in high-end manufacturing fields. The surface treatment technology of 1.2767 steel can significantly improve the service life of molds, and the overall performance is better than that of conventional tool steel materials.

1.2767 Steel Core Characteristics

Chemical composition

Carbon (C) 0.40-0.50%
Chromium (Cr) 1.20-1.50%
Nickel (Ni) 3.80-4.30%
Molybdenum (Mo) 0.15-0.35%
High nickel content endows it with excellent toughness and impact resistance, while chromium and molybdenum elements enhance wear resistance and high-temperature stability.

1.2767 Steel Performance Advantages

High toughness: compressive strength of 1300-1600 MPa, yield strength of 1000-1400 MPa, suitable for heavy-duty stamping tools.
Wear resistance: After quenching, the hardness is 50-60 HRC, and the chromium carbide layer significantly extends the mold life.
Dimensional stability: The heat treatment deformation is extremely low, and the surface roughness after polishing can reach Ra<0.1 μ m, suitable for precision molds.

1.2767 Steel Application Fields

Mold manufacturing: plastic injection molds, embossing molds, cold work tools (such as stamping molds, cutting blades).
Special tools: for scenarios that require high hardness and toughness, such as heavy-duty cold extrusion and thick plate cutting.

1.2767 Steel Heat Treatment Process
Quenching: Oil quenching or gas cooling at 830-860 ℃ to obtain martensitic matrix.
Tempering: Hardness of 54-56 HRC after tempering at 200-300 ℃ (wear-resistant scenario), 42-46 HRC after tempering at 500-570 ℃ (high toughness requirement).

1.2767 Steel Mechanical Properties
Balance between high hardness (50-54HRC after quenching) and high toughness (compressive strength 1300-1600MPa)
Excellent wear resistance and bending strength, suitable for withstanding heavy impact loads
Large section uniform hardening ability ensures consistent performance of thick workpieces

1.2767 Steel Processing Performance
Annealing hardness ≤ 260HB, convenient for cutting and forging processing
Excellent polishing performance, capable of achieving mirror effect (Ra<0.1 μ m)
Excellent hardenability, supports air cooling hardening process

Typical application areas of 1.2767 steel

Heavy duty cold work mold
Stamping dies (such as automotive parts stamping)
Cold heading molds, cutting tools (such as cold scissors)
Embossing mold (required for high compressive strength scenarios)

High precision tools
Plastic mold templates and embedded parts
Precision components of medical devices (requiring biocompatibility treatment)

Key points of heat treatment process for 1.2767 steel
Quenching: Oil/gas cooling at 830-880 ℃ to form martensitic matrix
Tempering control:
Low temperature tempering (200-300 ℃): 54-56HRC, suitable for high wear resistant tools
High temperature tempering (500-570 ℃): 42-46HRC, improves toughness
Cryogenic treatment (optional): -70~-80 ℃ treatment to optimize dimensional stability

1.2767 steel exhibits excellent performance under extreme working conditions, especially suitable for high-precision and high load industrial applications.