Materion · MoldMAX
MoldMAX XL Copper-Nickel-Tin Mold Alloy
MoldMAX XL is a high-strength copper-nickel-tin (Cu-Ni-Sn) mold alloy that, according to Materion, is about as hard as AISI P-20 tool steel while conducting heat two to three times better.

MoldMAX XL 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 | 30 | materion.com |
| Thermal conductivity | 40 BTU/ft·hr·°F | materion.com |
| Yield strength | 105 ksi | materion.com |
| Tensile strength | 115 ksi | materion.com |
| Thermal expansion coefficient | 9.3 ×10⁻⁶ /°F | materion.com |
Typical applications
- Injection mold inserts that need P-20-class hardness
- Mold components that need impact strength
Other MoldMAX grades
All MoldMAXFrequently asked questions
- What is MoldMAX XL made of?
- Materion describes MoldMAX XL as a copper-nickel-tin (Cu-Ni-Sn) alloy, not a beryllium copper.
- What is the price of MoldMAX XL?
- Prices for MoldMAX XL 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 XL?
Tell us the grade, form, size and quantity, and we will send a quotation.