MoldMAX XL

MoldMAX XL

MoldMAX XL by Materion Brush Performance Alloys is a high strength copper mold alloy with good thermal conductivity. 

MoldMAX XL contains no beryllium and is available in sections as large as 12 thick. The plastic tooling alloy’s hardness is comparable with AISI P-20 tool steel, but its thermal conductivity is two to three times higher. 

 Advantages/Benefits of MoldMAX XL 

Due to the unique combination of thermal conductivity and strength available in these copper mold alloys, you gain advantages like: 

• Shorter cycle time
• Improved plastic part dimensional control
• Better parting line maintenance
• Excellent corrosion resistance 

MoldMAX XL provides excellent toughness, wear resistance and surface finish, and typically machines faster than tool steels, and with appropriate machine tools, metal removal rates several times higher can be obtained. 

Chemical Composition of MoldMAX XL 

• Nickel – 8.5 – 9.5
• Tin -5.5 – 6.5
• Copper - balance 

moldmax XL common uses and applications

MoldMAX XL is commonly used for injection mold cores and cavities.

Chemical composition of MoldMAX XL

• Nickel – 8.5 to 9.5 
• Tin – 5.5 to 6.5
• Copper - balance 

Physical properties of MoldMAX XL 

• Elastic modulus - 17.0x10⁶ psi (117 GPa)
• Density - .322 lb/in³ (8.90 g/cm³)
• Poisson's Ratio - 0.3
• Thermal conductivity at 212°F (100°C) - 40 BTU/hr ft °F (70 W/m K)
• Coefficient of Thermal Expansion - 9.0 ppm/°F (16.2 ppm/°C)
• Specific Heat (Heat Capacity) at 70°F (20°C) -  0.090 BTU/lb °F (377 J/kg K)
• Specific Heat (Heat Capacity) at 212°F (100°C) - 0.093 BTU/lb °F (389 J/kg K)
• Melting Temperature (Solidus) - 1695°F (925°C)

 Nominal Mechanical properties of MoldMAX XL

• 0.2% Offset Yield Strength - 105 ksi (720 MPa)
• Ultimate Tensile Strength - 115 ksi (790 MPa)
• Tensile Elongation in 2 inches (50.8 mm) - 6%
• Hardness - 30 HRC
• 10⁷ Cycle Rotating Beam (R=-1 / Fully Reversed) Fatigue Strength  - 35 ksi (240 MPa)
• Charpy V-Notch (CVN) impact STrength - 15 ft lbs (20 J)

MoldMAX XL Available Forms, Sizes and Tolerances

MoldMAX XL is available in rounds, square and rectangular bars and plate.

Applicable Specifications and Standards

MoldMAX XL is certified to hardness and conductivity only.

Contact Materion Brush Performance Alloys 

For more information about MoldMAX XL Plastic Tooling Alloys, contact Materion Brush Performance Alloys today.