Materion · MoldMAX
MoldMAX HH Beryllium Copper Mold Alloy
MoldMAX HH is a premium beryllium copper mold alloy that, according to Materion, matches standard tool steels in hardness and strength while conducting heat four to six times better. It suits core and cavity inserts that must resist wear and pull heat out of the part quickly.

MoldMAX HH properties
Typical values from Materion's comparison table (the same table lists P-20 tool steel at Rockwell hardness 30 and 17 BTU/ft·hr·°F; the table does not state the Rockwell scale). Confirm against the datasheet before design.
| Property | Value | Source |
|---|---|---|
| Rockwell hardness | 40 | materion.com |
| Thermal conductivity | 75 BTU/ft·hr·°F | materion.com |
| Yield strength | 145 ksi | materion.com |
| Tensile strength | 170 ksi | materion.com |
| Thermal expansion coefficient | 9.7 ×10⁻⁶ /°F | materion.com |
Typical applications
- Injection mold core and cavity inserts
- Parting-line inserts
- Sliders and lifters
Other MoldMAX grades
All MoldMAXFrequently asked questions
- How hard is MoldMAX HH?
- Materion's comparison table lists MoldMAX HH at a Rockwell hardness of 40, against 30 for P-20 tool steel (the table does not state the scale).
- Can MoldMAX HH be weld-repaired?
- Yes. Materion offers WeldPak and WeldPak XL filler metal for TIG repair of beryllium copper MoldMAX alloys. Control welding fumes as Materion's SDS requires.
- What is the price of MoldMAX HH?
- Prices for MoldMAX HH are quoted per enquiry, because they depend on the grade, the form (rod, plate, strip and so on), the size and the quantity. Send those details through the quote form, by phone on 02-728-0150 or on LINE @vanintertrade, and we will quote.
Need a price for MoldMAX HH?
Tell us the grade, form, size and quantity, and we will send a quotation.