For turning Hardened steel ｜ Coated / Uncoated CBN
Hardened steel – Finishing
The first recommended material for continuous to light interrupted machining,
with a coating that has excellent wear resistance.
| BHN320 | Competitor |
|---|---|
 |
 |
Alloy steel（HRc62）
vc =
150m/min
500 SFM
, f =
0.1mm/rev
.004 IPR
, ap =
0.2mm
.008” DOC
, Continuous
A multi-layer coating with excellent wear resistance and chipping resistance is used,
making this a versatile material that can be used for continuous to interrupted machining.
| BHN330 | Competitor |
|---|---|
 |
 |
| Number of impacts 2800 times | |
Alloy steel（HRc62）
vc =
75m/min
250 SFM
, f =
0.1mm/rev
.004 IPR
, ap =
0.1mm
.004” DOC
, Heavy interrupted
Number of times until breakage
CBN is bonded with a special binder, providing excellent wear resistance at high speeds and continuous cutting.
| BH320 | Competitor |
|---|---|
 |
 |
Alloy steel（HRc62）
vc =
150m/min
500 SFM
, f =
0.1mm/rev
.004 IPR
, ap =
0.2mm
.008” DOC
, Continuous
| BH330 | Competitor |
|---|---|
 |
 |
Alloy steel（HRc62）
vc =
150m/min
500 SFM
, f =
0.1mm/rev
.004 IPR
, ap =
0.2mm
.008” DOC
,
After processing
0.7km
28000”
| BH330 | Competitor |
|---|---|
 |
 |
| Number of impacts 3500 times | |
Alloy steel（HRc62）
vc =
150m/min
500 SFM
, f =
0.1mm/rev
.004 IPR
, ap =
0.2mm
.008” DOC
, Heavy interrupted
High resistance to chipping and fracture, highly recommended for heavy interrupted cutting.
| BH340 | Competitor |
|---|---|
 |
 |
| Number of impacts 4300 times | |
Alloy steel（HRc62）
vc =
75m/min
250 SFM
, f =
0.1mm/rev
.004 IPR
, ap =
0.1mm
.004” DOC
, Heavy interrupted
Number of times until breakage
← Sharpness
Toughness →
| ISO | Work material | Coolant | Grade | vc (m/min) (SFM) | ap (mm) (inch) | f (mm/rev) (IPR) |
|---|---|---|---|---|---|---|
 |
Hard Turning Finish (Continious) |
WET | BHN320 BH320 |
100 – 300 330 – 1000 | – 0.5 – .020 | – 0.2 – .008 |
| Hard Turning Finish (Mid-Interrupt) |
DRY | BHN330 BH330 |
75 – 225 250 – 740 | – 0.5 – .020 | – 0.15 – .006 | |
| Hard Turning Finish (Interrupt) |
BH340 | 50 – 150 160 – 500 | – 0.5 – .020 | – 0.1 – .004 |
| Automotive parts | ||
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| BHN320 |
400 pcs / corner
|
|
| Competitor’s CBN |
200 pcs / corner
|
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Conventionally, Competitor’s CBN would reach the end of its tool life due to a deterioration in the machined surface roughness, but BHN320 suppresses notch wear and achieved double tool life.
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| BH340 |
140 pcs / corner (Improved stability) |
|
| Competitor’s CBN |
100 pcs / corner (Not stability) |
|
Conventional CBN frequently suffered from sudden chipping, but BH340 can be stably machined up to a certain point.
For more information about this product, visit our online e-catalog, or download the catalog/product report