Kennametal Buying Decisions: 8 Cost Questions Procurement Pros Ask (And Why Price Isn't #1)

Making Kennametal Decisions That Won't Come Back to Bite You

I manage procurement for a mid-sized job shop. We spend around $180,000 annually on cutting tools and workholding. Over 6 years of tracking every invoice and comparing vendors, I've learned that what looks like a "good deal" on a Kennametal insert often isn't. This article answers the questions I wish someone had answered for me when I started.

Let's get straight to the point.

1. Why do Kennametal tools cost more than "generic" or "compatible" inserts?

Honestly, when I first started, I couldn't see the difference. The PVD coating looked similar. The geometry looked close. But then I tracked performance data over 6 months across three different jobs—stainless steel, 4140, and cast iron.

The generic insert lasted about 40% fewer parts in the stainless job before edge breakdown. The Kennametal insert, on the other hand, ran consistently. My cost per part was lower with Kennametal, even though the insert price was higher.

My take: You're not paying for the insert. You're paying for the engineering that makes it predictable. In high-mix, low-volume shops like ours, that predictability is gold. A surprise tool failure on a rush order costs way more than the insert itself.

2. I'm confused by Kennametal turning insert nomenclature. Can you explain it?

I get it. It looks like alphabet soup. I've been there. After decoding maybe 200 different insert orders, here's how I think about it:

Each part of the code tells you something specific about the insert's geometry. The first letter (like 'C' or 'D') is the shape. That's easy. The second letter (like 'N' or 'P') is the clearance angle. The tricky part is the fifth letter (like 'M' or 'G'). That's the chip breaker and tolerance class.

Pro tip: I built a simple cross-reference sheet for our shop floor. It maps the Kennametal codes to our most common applications (stainless steel, aluminum, etc.). Saved us from ordering the wrong insert multiple times. That one mistake—ordering the wrong geometry—cost us about $450 in wasted inventory over a year.

If you're new, start with the Kennametal catalog for your specific material. And always order one test insert before buying 100.

3. Are Kennametal indexable end mills worth the premium over solid carbide?

I have mixed feelings on this one. It depends entirely on the operation.

For roughing operations on large parts where tool changes eat into cycle time, indexables can be a no-brainer. When the inserts wear out, you just index them. I've seen shops use one indexable end mill body for a year, changing inserts every 200 parts. The body cost about $220. Inserts cost about $15-20 each. Total tooling cost: roughly $420 for the year.

But for finishing? I'd stick with solid carbide. The runout on indexables is generally higher. Plus, the surface finish suffers. One shop I audited switched from indexables to solid for a critical finishing pass on a medical device part. Their scrap rate dropped from 8% to 1.2%.

So, indexables for roughing, solid for finishing. Simple rule of thumb I've stuck by.

4. We work with a stainless steel CNC machining manufacturer. How can Kennametal help with tool life?

Stainless steel is a beast. It work-hardens, it's gummy, and it eats carbide for breakfast if you're not careful. After a particularly painful job running 316L stainless where we kept losing inserts to cratering, we switched the geometry and grade based on a Kennametal application engineer's recommendation.

The result? Tool life doubled.

Specifically, we moved to a Kennametal grade designed for stainless steel—something with a tough substrate and a coating that resists built-up edge. The key variables were chip evacuation (using coolant through the holder) and cutting parameters (lowering speed slightly to reduce heat at the cutting edge).

Honestly, I'm not sure why some shops don't benchmark their tooling performance against material-specific recommendations. It's basically free money.

5. We quote for China dental 3D printer resin models. How does Kennametal apply there?

This one surprised me when I first encountered it. Dental resin models are mostly machined in a soft, green state or as a secondary operation after printing. The machining tolerances for dental models are tight—like ±0.005 inches or better.

For finishing resin models, a sharp, polished carbide end mill is critical. You don't want to tear the material. Kennametal makes some solid carbide end mills with sharp cutting edges and tight tolerances that work well here. The trade-off is that these tools cost about 20-30% more than standard end mills.

But the health consequences of a bad surface finish on a dental model? That's not just a redo. That's potentially a medical liability. So the value equation changes.

6. I read about "what does a CO2 laser do to your face" in my search results. How is this related to Kennametal?

I've seen this too. It's a distraction. The search results mix up unrelated topics. CO2 lasers for facial resurfacing have nothing to do with metal cutting.

If you're looking for Kennametal information, stick to the machining and industrial wear solutions side. The medical/dental 3D printing connection I mentioned earlier is a real crossover point (tooling for medical/dental parts), but lasers for cosmetic procedures are a completely separate industry.

This is a good reminder to use specific, targeted keywords when searching for Kennametal products. For example, search for "Kennametal [insert grade] end mill for stainless steel" rather than broad terms.

7. How can I negotiate a better price on Kennametal tools?

You can, but the approach matters. Volume is your biggest lever. I track our spend by Kennametal category (turning inserts, milling inserts, tool holders, etc.). If we're spending $15,000 per year on turning inserts, I can negotiate a 3-5% discount by committing to a 12-month blanket order.

But here's the catch: Don't push for the lowest price. Push for value-add. Things like:

• Free or discounted application engineering
• Extended payment terms (Net 60 vs Net 30)
• Consignment inventory (they hold stock in your shop, you pay when you use it)
• Free sample tooling for test runs

In 2024, I negotiated a consignment inventory deal that saved us about $8,000 in carrying costs alone. That's a better deal than a 5% price cut.

8. What's the biggest mistake procurement teams make when buying Kennametal tools?

Easily: ignoring total cost per part. I see teams compare the price of a Kennametal insert to a generic insert and pick the cheaper generic. Then they ignore the higher scrap rate, the increased machine downtime from premature tool failure, and the extra cost of reworking parts.

I did a study on our shop floor last year. For a specific 17-4 PH stainless steel part, the unit cost with a generic insert was $4.20 per part. With a Kennametal insert, it was $3.60 per part—14% cheaper. The Kennametal insert cost $2.80 more upfront. Over 500 parts, that's a $1,400 difference in tooling cost. But the total cost savings were over $300.

That's the math that matters. Cheap tools fail. Expensive ones last. Simple.

So glad I ran that analysis. Almost went with the generic quote to save a few dollars upfront. That would have been a nightmare.

— A procurement manager who learned the hard way.

Note: Pricing data referenced in this article is based on publicly available distributor and Kennametal catalog pricing as of March 2025. Verify current pricing with your authorized distributor, as rates may have changed.