Tungaloy SNMG120408L-S NS9530 Cermet Insert
High-Gloss Left-Hand Steel Machining | NS9530 Cermet Grade | Precision -S Chipbreaker
How do I get a polished surface finish on steel with left-hand turning?
The Tungaloy SNMG120408L-S NS9530 is a premier cermet turning insert designed specifically for precision finishing of ISO P (Steel) and ISO K (Cast Iron). By utilizing the NS9530 cermet grade, this insert provides exceptional resistance to oxidation and chemical wear, ensuring your workpieces achieve a mirror-like high-gloss finish. This Left-Hand (L) model features the specialized -S chipbreaker, engineered for light-to-medium finishing passes where chip control is paramount. Authentic Made in Japan, it is the ultimate choice for CNC operators who demand aesthetic perfection and dimensional stability.
NS9530 Cermet Technology
Combines ceramic hardness with metallic toughness. It prevents the built-up edge (BUE) common in steel, allowing for higher cutting speeds and superior surface gloss.
-S Chipbreaker Geometry
Designed for medium-to-light finishing. The -S breaker forces chips into tight, manageable curls, protecting the surface finish of the component from chip scratching.
Superior Sharpness
Tungaloy's cermet substrate allows for a much sharper cutting edge than standard carbide, reducing cutting force and improving accuracy on thin-walled parts.
Decoding SNMG120408L-S Technical Nomenclature
S
Square
N
0° Relief
M
Tolerance
G
Hole/Fix
12
12.7mm Size
04
4.76mm Thick
08
0.8mm Rad.
L-S
Left/Breaker
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Inscribed Circle (IC) |
12.7 mm |
1/2" (SNMG 432L) |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
0.8 mm |
1/32" |
| Substrate Type |
NS9530 (Cermet) |
Mirror Finish Grade |
Recommended Cutting Parameters (NS9530 Cermet)
-
Cutting Speed (Vc): 100 - 300 m/min (Ideally 220 m/min for steel)
-
Feed Rate (f): 0.10 - 0.30 mm/rev
-
Depth of Cut (ap): 0.5 - 2.0 mm
*Pro Tip: For the highest gloss, use higher cutting speeds and ensure your machine has high rigidity. Avoid interrupted cuts with cermet.*
4. Product Applications
- High-gloss finishing of steel shafts and gears.
- Machining of valve parts and precision cylinders.
- Final passes on cast iron components for better aesthetics.
- B2B production of decorative steel industrial components.
5. Tool Compatibility
Compatible with all standard ISO Left-Hand Turning Holders (External: DSBNL, PSSNL; Internal: S...-PSSNL). Designed specifically for SNMG 1204 pockets.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese Import
Expert B2B Support
CNC Technical Specialists
Fast Shipping
Reliable Global Fulfillment
Bulk Inventory
Ready for Factory Orders
Global Customer Insights
⭐⭐⭐⭐⭐ "Mirror Finish Success" - Mark T., USA
"The NS9530 cermet is a game changer for our finish passes. Switched from carbide to these for our left-hand operations and the surface quality is incredible."
⭐⭐⭐⭐⭐ "Very Stable" - Hans B., Germany
"Original Japanese quality. These inserts are very stable during high-speed finishing. Chip control with the -S breaker is perfect."
⭐⭐⭐⭐ "Great for Steel" - K. Sato, Japan
"Consistent performance across all our CNC lathes. The cermet grade really helps prevent built-up edge on alloy steel."
⭐⭐⭐⭐⭐ "Reliable B2B Partner" - S. Ramesh, Singapore
"CNCHome-Beyond provided fast shipping and genuine Tungaloy parts. The technical data in the description helped us optimize our cycle time."
⭐⭐⭐⭐⭐ "Top Notch" - L. Rossi, Italy
"I highly recommend these for anyone needing a polished look without extra grinding steps. Excellent tool life for a cermet."
8. FAQ - Technical Support
Q: Can I use this for interrupted cutting?
A: No. Cermet is more brittle than carbide. It is highly recommended for continuous finishing. Use carbide (T9125/T9225) for interrupted cuts.
Q: Does this fit SNMG 432L tool holders?
A: Yes. SNMG 120408 is the metric standard for the Imperial SNMG 432 size. They are fully compatible with 1/2" IC holders.
Q: What is the benefit of cermet over CVD carbide?
A: Cermet has lower chemical affinity with steel, preventing metal from sticking to the tool (BUE), which results in a much shinier surface finish.
Machinist Tip: Cermet vs. Carbide Comparison
Choose **Carbide** for roughing or heavy removal where strength is needed. Choose **Cermet (NS9530)** for the final finish pass where surface quality and diameter precision are the goal. By using cermet for the final 0.5mm, you can often eliminate the need for secondary polishing or grinding. Trust **Tungaloy Japan** for world-leading finish quality.
© Technical Data by cnchome-beyond.com - Industrial CNC Authority
