Case Study · Mold & Die
Increased Die/Mold Tool Life in Hardened Steel
Tested in D2 at 58 HRc, the DM/MDM end mill lasted 450% longer with 909% less wear than comparable hard-milling tools.
450%
longer tool life
909%
less wear
70 HRc
max hardness
Hard milling keeps demanding tighter tolerances, and inadequate tool life forces mid-job tool changes that scrap parts. RobbJack's DM/MDM die/mold carbide end mill — a new carbide-and-coating combination — was tested head-to-head against comparable tools in D2 at 58 HRc.
Lower is better — the DM/MDM held a smooth, shallow wear land where competitors notched and broke down.
The test
Performance was compared in D2 at 58 HRc, pitting the new DM/MDM carbide end mills against competitive alternatives built for hard-metal machining.
The results
Competing tools showed significant wear lands or deep notches. The DM/MDM held a smooth wear land and dramatically outperformed every tested alternative — cutting difficult molds without mid-process tool changes, generating less heat, and holding size and tolerance.
- Superior finish that reduces or eliminates polishing.
- Extended durability in tough areas like parting lines.
- Capable up to 70 HRc.
- Dry-cutting capability.
A smooth 0.0025" wear land vs. 0.0275" tells the whole story — predictable hard milling, finished molds, fewer interruptions.
Tools in this story
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