Indexable Carbide

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Difficult-to-machine materials?

I wish to test a hard coating on simple geometry tools (e.g., indexable carbide inserts). Can anyone recommend a material and machining operation which should readily wear standard cutting tools (e.g., inserts, taps, router bits)?
I'm looking for a simple set-up which will readily wear a tool -- for example, fly cutting copper, or turning G-10.

I would use what was locally available at reasonable cost. I like lathes best. Chose one with high power to speed test. In the old days, people ran machines slowly to maximize tool life, thinking they were minimzing cost. Now, smart shops run at high speeds, as tool cost is not so significant compared to other costs.

4130 forged bar is a great material for testing. Mediocre machinability, good strength, some degree of hardness, not too expensive. But I think you could use plain carbon steel bar or pipe just as well. It probably requires about 2x more material for similar wear.

But what do you mean when you say hard to machine? I don't think you mean exotics that give nasty surface finish.

Be careful doing your test and controls. I would claim that tool temperature is a primary wear predictor. Hard to keep this consistent between tests, or even to measure it.

Discover Indexable Carbide On eBay Below:

BOMT 170608r in2530 INGERSOLL INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
BOMT 170608r in2530 INGERSOLL INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
$100.44
LNCR 1404 PDXR IC28 ISCAR INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
LNCR 1404 PDXR IC28 ISCAR INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
$55.30
10 x Dnmg 150608 PR 4325 Sandvik Indexable Inserts Carbide Inserts 10 Pcs
10 x Dnmg 150608 PR 4325 Sandvik Indexable Inserts Carbide Inserts 10 Pcs
$120.75
APMT1604 PDER GP5030 milling carbide inserts for indexable end milling cutter
APMT1604 PDER GP5030 milling carbide inserts for indexable end milling cutter
$33.19
APMT1604PDER PM5525 milling carbide inserts for indexable end milling cutter
APMT1604PDER PM5525 milling carbide inserts for indexable end milling cutter
$37.15
APMT1135PDER PM5525 milling carbide inserts for indexable end milling cutter
APMT1135PDER PM5525 milling carbide inserts for indexable end milling cutter
$31.17
APMT1135 PDER GS1125 milling carbide inserts for indexable end milling cutter
APMT1135 PDER GS1125 milling carbide inserts for indexable end milling cutter
$29.63
RPMW1003 GS1125 milling carbide inserts for indexable end milling cutter
RPMW1003 GS1125 milling carbide inserts for indexable end milling cutter
$24.80
5PCS 3 8 Indexable Carbide C6 Insert Turning Tool Bit  Holder Mini Lathe Set
5PCS 3 8 Indexable Carbide C6 Insert Turning Tool Bit Holder Mini Lathe Set
$24.98
APKT113508 PDFR LH indexable milling cutter carbide inserts for Aluminium alloy
APKT113508 PDFR LH indexable milling cutter carbide inserts for Aluminium alloy
$26.24
XOMX 180608R M10 MS2050 SECO INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
XOMX 180608R M10 MS2050 SECO INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
$100.44
SHLT 140508TN HR IN2040 INGERSOLL INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
SHLT 140508TN HR IN2040 INGERSOLL INDEXABLE INSERTS CARBIDE INSERTS 10 pcs
$77.87
1 4 5PC INDEXABLE CARBIDE INSERTS TURNING TOOL BIT SET C6
1 4 5PC INDEXABLE CARBIDE INSERTS TURNING TOOL BIT SET C6
$23.99
10x Mitsubishi DCMT 11T308 MV MC6025 INDEXABLE INSERTS CARBIDE INSERTS
10x Mitsubishi DCMT 11T308 MV MC6025 INDEXABLE INSERTS CARBIDE INSERTS
$55.30
10x ISCAR HFPR 3015 IC354 Indexable Inserts Carbide Inserts
10x ISCAR HFPR 3015 IC354 Indexable Inserts Carbide Inserts
$168.15
10x Walter VBMT 160408 fp6 WPP10S Indexable Inserts Carbide Inserts
10x Walter VBMT 160408 fp6 WPP10S Indexable Inserts Carbide Inserts
$66.58
USED VALENITE 750 SHANK SDS 62 Carbide Indexable BORING BAR 615 DIA MIN BORE
USED VALENITE 750 SHANK SDS 62 Carbide Indexable BORING BAR 615 DIA MIN BORE
$44.00
Indexable Carbide Insert Tool Holders 27 Holders Boring Bars Turning Inserts
Indexable Carbide Insert Tool Holders 27 Holders Boring Bars Turning Inserts
$810.00
20pc Lamina Carbide Inserts APLX 1003 PDTR LT30 Indexable End Mill Coated 996SO
20pc Lamina Carbide Inserts APLX 1003 PDTR LT30 Indexable End Mill Coated 996SO
$119.99
Mitsubishi Indexable Carbide Turning Inserts 10 Pack CNMA120408 CNMA432 UC5105
Mitsubishi Indexable Carbide Turning Inserts 10 Pack CNMA120408 CNMA432 UC5105
$48.00
Sandvik Cormat R2152 320 Mini Indexable Carbide Insert CNC Mill
Sandvik Cormat R2152 320 Mini Indexable Carbide Insert CNC Mill
$82.48
NTK CNC Lathe VGTL16 3 1 SHANK INDEXABLE GROOVING CARBIDE CVL3N
NTK CNC Lathe VGTL16 3 1 SHANK INDEXABLE GROOVING CARBIDE CVL3N
$48.48
Iscar LANL 16 15 TANG ISCAR TOOLHOLDER cnc indexable carbide insert holder 1
Iscar LANL 16 15 TANG ISCAR TOOLHOLDER cnc indexable carbide insert holder 1
$62.48
NTK CNC Lathe VGTL16 3 1 SHANK INDEXABLE GROOVING CARBIDE CVL3N
NTK CNC Lathe VGTL16 3 1 SHANK INDEXABLE GROOVING CARBIDE CVL3N
$78.48
20pc NEXUS Carbide Inserts CCMT 2152 HM 251 Indexable Coated Tips Bits 223SO
20pc NEXUS Carbide Inserts CCMT 2152 HM 251 Indexable Coated Tips Bits 223SO
$59.99
3 1 4 Diameter Carbide Inserts Indexable End Mill Cutter Tool Holder 4 1 4 LOC
3 1 4 Diameter Carbide Inserts Indexable End Mill Cutter Tool Holder 4 1 4 LOC
$145.00
NEW Indexable Carbide Sandvik Ejector A80024 03D 1000 Coro Drill Boring Head
NEW Indexable Carbide Sandvik Ejector A80024 03D 1000 Coro Drill Boring Head
$49.95
Strelinger Indexable Carbide Turning Inserts CNMG544GH US735 Qty 5
Strelinger Indexable Carbide Turning Inserts CNMG544GH US735 Qty 5
$53.11
SHARS 5 16 X 4 LH SCLCL INDEXABLE BORING BAR HOLDER CCMT CARBIDE INSERT NEW
SHARS 5 16 X 4 LH SCLCL INDEXABLE BORING BAR HOLDER CCMT CARBIDE INSERT NEW
$25.50
20pc NEXUS Carbide Inserts CCMT 3251 HM 251 Indexable Coated Tips Bits 226SO
20pc NEXUS Carbide Inserts CCMT 3251 HM 251 Indexable Coated Tips Bits 226SO
$69.99
20pc NEXUS Carbide Inserts CCMT 3251 HR 251 Indexable Coated Tips Bits 270SO
20pc NEXUS Carbide Inserts CCMT 3251 HR 251 Indexable Coated Tips Bits 270SO
$69.99
USED KOMET ABS80 CARBIDE INDEXABLE DRILL W ADJUSTABLE EXTERNAL CUTTING EDGE
USED KOMET ABS80 CARBIDE INDEXABLE DRILL W ADJUSTABLE EXTERNAL CUTTING EDGE
$200.00
USED KOMET ABS100 CARBIDE INDEXABLE DRILL ABS100KUB2687 400R53 W29 5003008
USED KOMET ABS100 CARBIDE INDEXABLE DRILL ABS100KUB2687 400R53 W29 5003008
$250.00
20pc NEXUS Carbide Inserts CCMT 3252 HF 251 Indexable Coated Tips Bits 271SO
20pc NEXUS Carbide Inserts CCMT 3252 HF 251 Indexable Coated Tips Bits 271SO
$69.99
20pc NEXUS Carbide Inserts CCMT 3252 HR 251 Indexable Coated Tips Bits 273SO
20pc NEXUS Carbide Inserts CCMT 3252 HR 251 Indexable Coated Tips Bits 273SO
$69.99
ABS IMPORT INDEXABLE CUT OFF  TURNING TOOL HOLDER 7 PC TOOL SET P N2002 0013
ABS IMPORT INDEXABLE CUT OFF TURNING TOOL HOLDER 7 PC TOOL SET P N2002 0013
$113.36
NEW SURPLUS KOMET KUB CARBIDE INDEXABLE DRILL HEAD 32MM 1260 V46 10321
NEW SURPLUS KOMET KUB CARBIDE INDEXABLE DRILL HEAD 32MM 1260 V46 10321
$150.00
VALENITE USA 4 INDEXABLE CARBIDE INSERT MILL CUTTER milling VST 04 3 08 38 44
VALENITE USA 4 INDEXABLE CARBIDE INSERT MILL CUTTER milling VST 04 3 08 38 44
$99.00
VALENITE USA 4 INDEXABLE CARBIDE INSERT MILL CUTTER milling tool holder
VALENITE USA 4 INDEXABLE CARBIDE INSERT MILL CUTTER milling tool holder
$99.00

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