H11 Tool & Die Steel Round Bars

A comprehensive overview of H11 Tool & Die Steel Round Bars, covering their composition, properties, applications, processing methods, standards, and surface finish options. 

When selecting this material for specific applications, it's essential to consider its properties and suitability for the intended use case, consulting with material engineers or suppliers if necessary.

Chemical Composition (Min-Max):

Mechanical Properties:

• Tensile Strength: 900 MPa - 1100 MPa
• Yield Strength: 800 MPa - 1000 MPa
• Elongation at Break: 12% - 15%
• Hardness: Typically around 38 - 45 HRC (Rockwell C hardness)

1. Physical Properties:

• Density: Approximately 7.8 g/cm³
• Thermal Conductivity: Around 25 W/(m·K) at room temperature
• Specific Heat Capacity: Approximately 0.46 J/(g·K)
• Melting Point: Typically above 1420°C (2590°F)
• Magnetic Properties: Generally magnetic

Applications:

• H11 steel round bars are commonly used in applications requiring high strength, toughness, and resistance to heat and wear, such as in forging dies, extrusion tools, and hot stamping tools for manufacturing processes in the automotive, aerospace, and machinery industries.

Processing:

• H11 steel round bars can be processed through methods like hot forging, machining, and heat treatment.
• Heat treatment processes such as annealing, quenching, and tempering may be applied to achieve desired mechanical properties and improve machinability.

Standards: H11 steel typically conforms to international standards such as ASTM A681 for tool steels.

Surface Finish: Surface finish options for H11 steel round bars include black, peeled, ground, or polished, depending on the application requirements.