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For buyers who are constantly fighting with tool wear on hardened steels above 50 Rc, the usual problem is that standard mills just don't hold up—chipping on entry, edge breakdown after a few passes, inconsistent surfce finishes that wreck your cycle time. We've seen shops burning through two or three tools per part on something like a D2 die block at 55 HRC, and that's before you factor in the scrap from a failed finish pass.
Basically, what this 4-flute ball nose does is give you a much tougher working edge on those hard materials because the substrate itself is a solid carbide with about 0.5μm grain size and 12% cobalt content—that flexural strength rating of 4300 N/mm² tells you it won't snap under heavy radial loads, and the Tisin coating handles operating temps up to 800°C without losing hardness. So you're looking at a tool that can run at 150 m/min speed in something like H13 or 4140 pre-hard, and still hold that ball nose geometry for contour work without glazing over.
Actually, we usually have stock on the common sizes—3mm, 6mm, 10mm ball diameters—but the 8mm and 12mm can be a special order depending on the month, so check lead time (typically 2-3 weeks for non-stock). Teh shank is straight, 30° helix angle, and the coating thickness runs 2-4μm which is pretty standdard for Tisin but tighter tolerance than some economy coatings we've tested. Most buyers go with the 6mm for general 3D profiling work.
Anyway, for pricing we do three tiers: sample orders for 5 pieces or fewer run about $18-22 per tool depending on shank size, mid-range orders of 50 to 200 pieces drop to around $11-14 each, and bulk at 500+ gets you down to roughly $9 or so per unit. The cost-effectiveness really shows when you figure how many tool changes you skip—I've seen customers get 40-50% more parts per tool compared to a standard HSS-Co or uncoated carbide on the same job. is that this isn't suited for aluminun or soft plastics below 30 HRC—the geometry is too aggressive and you'll get poor chip evacuation on gummy materials.
We also provide a COA with every batch showing hardness, grain size, and coating thickness verification form our in-house HPLC-style analysis—it's not just a paper certificate, we actually run a sample from each production lot through the tests. For a 10mm ball nose in bulk, you're looking at about 100 pieces per box, and the flexural strength data on TDS will show you the consistency between lots.
Our MOQ is typically 10 pieces for this model, but we can sometimes do smaller trial orders if you're just testing. Just reach out to confirm.
Standard lead time is about 15-20 working days. If you need it faster, we can expedite for a small fee—usually 7-10 days.
Yes, the whole production line is ISO 9001:2015 certified. We can include a material certificate with your shipment upon request.
Absolutely—it's designed for that. The 0.5μm grain and Tisin coating keep it stable at 150 m/min on hardened steels, but for tougher alloys you might want to dial it back a bit.
Keep them in a dry place at room temperature, ideally in their original packaging. Avoid moisture or extreme heat, as the coating can degrade if stored above 800°C.
