Products & Services

Thermal-Mould™ Super Beryllium-Free Alloy

Thermal Mould™ Super is manufactured to provide a combination of high strength and hardness properties coupled with superior thermal properties. This range of properties makes Thermal-Mould™ Super the premier material for copper alloy molds and a wide range of other applications from oil and gas to aerospace.

In the past, customers who wanted to avoid beryllium but were in need of larger blocks and plates, were forced to use C18000 – a good material but too soft for many mold and die applications. IBC Advanced Alloys has been selling a non-beryllium alloy called Thermal-Mould Super™ since 2009, and we continue to expand our size range and capabilities with this alloy. Thermal-Mould Super™ is a beryllium-free mold alloy, with similar properties (hardness and conductivity) to copper beryllium C17200LH. The alloy is CuNiSiCr. To our knowledge, we are able to make much larger pieces than any other supplier in the world. The largest size typically available from other manufacturers is 4 to 5″ thickness, whereas we can make plates up to 10″ thick. Thermal-Mould Super™ properties are consistent throughout the work piece and in all directions. Our material is easily machined and takes an excellent finish. Welding, grinding, and EDM’ing operations can be performed safely.


Chemical composition (Weight Percent Nominal)

Element Percentage

  • Nickel:  7%
  • Silicon:  2%
  • Chromium:  1%
  • Copper:  Balance


Physical and Chemical Properties

  • Density lb/in³:   0.314
  • Elastic modulus (106 psi):   18.5
  • Coefficient of Thermal Expansion (in./in./°F):   9.7 X 10-6
  • Thermal Conductivity (btu/°F):  90
  • Melting Temperature (°F):  1800


Typical Mechanical Properties


  • Temper Heat:  Treated Plate
  • Thickness:  All sizes
  • Tensile Strength (ksi):  110 – 125
  • 0.2% Offset Yield (ksi):   90 – 105
  • Elongation:  5 – 7%
  • Hardness (HRc or HRb):  26 – 30 HRc


Round bars

  • Temper:  Heat Treated
  • Thickness:  All sizes
  • Tensile Strength (ksi):  110 – 125
  • 0.2% Offset Yield (ksi):  90 – 105
  • Elongation:  5 – 7%
  • Hardness (HRc or HRb):  26 – 30 HRc


Forms Available

  • Plate: Thickness 1.00 to 10.00 inches, width 24 inches max. X standard mill lengths up to 60 inches.
  • Round bars: Diameter 1.00 to 12.00 inches, standard mill lengths.


For More Information:

Please contact our metallurgical engineers, who can provide you with more information your specific needs.


Latest News


IBC and NioCorp successfully complete the initial casting campaign for Aluminum-Scandium alloys. This testing is the basis for commercializing Aluminum-Scandium alloys. See more details here.



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