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Tungaloy SCMT09T304-PS NS9530 Square Cermet Turning Insert for Steel

Tungaloy SCMT09T304-PS NS9530 Square Cermet Turning Insert for Steel

$42.72 USD
Tungaloy SCMT09T304-PS NS9530 Insert Mirror Steel Finishing | -PS Precision Breaker | NS9530 Cermet Grade How to achieve a mirror finish on steel with SCMT cermet inserts? The Tungaloy SCMT09T304-PS...
Tungaloy SCMT09T308-PS T9115 Square Carbide Turning Insert for Steel Machining

Tungaloy SCMT09T308-PS T9115 Square Carbide Turning Insert for Steel Machining

$72.61 USD
Tungaloy SCMT09T308-PS T9115 Insert High-Speed Steel Finishing | -PS Precision Breaker | T9115 Premium CVD Grade What makes SCMT09T308-PS the best choice for steel finishing? The Tungaloy SCMT09T304-PS T9115 is...
Tungaloy SCMT09T304-PS T9115 Square Carbide Turning Insert for Steel

Tungaloy SCMT09T304-PS T9115 Square Carbide Turning Insert for Steel

$72.61 USD
Tungaloy SCMT09T304-PS T9115 Insert High-Speed Steel Machining | -PS Precision Breaker | T9115 CVD Grade What is the best carbide insert for high-speed finishing of steel? The Tungaloy SCMT09T304-PS T9115...
Tungaloy SCMT120404-24 T9125 Square Carbide Turning Insert for Steel

Tungaloy SCMT120404-24 T9125 Square Carbide Turning Insert for Steel

$90.80 USD
Tungaloy SCMT120404-24 T9125 Insert High-Efficiency Steel Turning | 24 Precision Breaker | Premium T9125 CVD Grade What is the best carbide insert for high-speed steel turning? The Tungaloy SCMT120404-24 T9125...
Tungaloy SCMT09T308-PS T9125 Square Carbide Turning Insert for Steel

Tungaloy SCMT09T308-PS T9125 Square Carbide Turning Insert for Steel

$72.61 USD
Tungaloy SCMT09T308-PS T9125 Insert Reliable Steel Machining | -PS Precision Breaker | T9125 Versatile CVD Grade What is the most durable carbide insert for general steel finishing? The Tungaloy SCMT09T308-PS...
Tungaloy SCMT09T304-PS T9125 Square Carbide Turning Insert for Steel

Tungaloy SCMT09T304-PS T9125 Square Carbide Turning Insert for Steel

$72.61 USD
Tungaloy SCMT09T304-PS T9125 Insert General Purpose Steel Machining | -PS Precision Breaker | T9125 CVD Grade What is the most reliable insert for general steel finishing? The Tungaloy SCMT09T304-PS T9125...
Tungaloy SCMT09T304-24 T9125 Carbide Turning Insert for Steel

Tungaloy SCMT09T304-24 T9125 Carbide Turning Insert for Steel

$74.91 USD
Tungaloy SCMT09T304-24 T9125 Insert High-Speed Steel Turning | 24 Precision Breaker | Premium T9125 CVD Grade What is the best carbide insert for high-speed steel turning? The Tungaloy SCMT09T304-24 T9125...
Tungaloy SCMT09T308-PS AH725 Square PVD Carbide Turning Insert

Tungaloy SCMT09T308-PS AH725 Square PVD Carbide Turning Insert

$62.26 USD
Tungaloy SCMT09T308-PS AH725 Insert Reliable Steel & Stainless Turning | -PS Chipbreaker | AH725 PVD Grade What is the best PVD insert for machining stainless and alloy steel? The Tungaloy...
Tungaloy SCMT09T304-PS AH725 PVD Coated Carbide Turning Insert

Tungaloy SCMT09T304-PS AH725 PVD Coated Carbide Turning Insert

$62.26 USD
Tungaloy SCMT09T304-PS AH725 Insert Multi-Purpose Turning | -PS Precision Breaker | Premium AH725 PVD Grade What is the most versatile PVD insert for steel and stainless? The Tungaloy SCMT09T304-PS AH725...
SCMT120408-24 NS9530 (10pcs)

SCMT120408-24 NS9530 (10pcs)

$44.91 USD
Cermet :NS9530  Designation:SCMT120408-24 NS9530 Square, 90° ,With hole Positive: 7°  , Corner radius:0.8 Steel:(Continuous cutting,Light interrupted cutting) Cast iron:(Continuous cutting,Light interrupted cutting) Garde:NS9530  Coating:Main composition (Uncoated)Feature:High fracture resistance,- Suitable for...
Tungaloy SCMT120404-24 NS9530 Square Cermet Turning Insert for Steel

Tungaloy SCMT120404-24 NS9530 Square Cermet Turning Insert for Steel

$59.77 USD
Tungaloy SCMT120404-24 NS9530 Insert Mirror Steel Finishing | 24 Precision Breaker | NS9530 Cermet Grade How to achieve a mirror finish on steel using cermet inserts? The Tungaloy SCMT120404-24 NS9530...
Tungaloy SCMT09T308-PS NS9530 Square Cermet Turning Insert for Steel

Tungaloy SCMT09T308-PS NS9530 Square Cermet Turning Insert for Steel

$42.72 USD
Tungaloy SCMT09T308-PS NS9530 Insert High-Gloss Steel Finishing | -PS Precision Breaker | NS9530 Cermet Grade What is the best cermet insert for mirror finishes on steel? The Tungaloy SCMT09T308-PS NS9530...
Tungaloy SCMT09T302-24 NS9530 Square Cermet Turning Insert

Tungaloy SCMT09T302-24 NS9530 Square Cermet Turning Insert

$46.17 USD
Tungaloy SCMT09T302-24 NS9530 Insert Precision Steel Finishing | 24 Chipbreaker | Premium NS9530 Cermet Grade What is the best cermet insert for precision steel finishing? The Tungaloy SCMT09T302-24 NS9530 is...
Tungaloy SCMT070204-24 NS9530 Cermet Turning Insert for Steel Finishing

Tungaloy SCMT070204-24 NS9530 Cermet Turning Insert for Steel Finishing

$45.02 USD
Tungaloy SCMT070204-24 NS9530 Insert High-Speed Steel Finishing | 24 Chipbreaker | Premium NS9530 Cermet Grade What is the best cermet insert for a mirror finish on steel? The Tungaloy SCMT070204-24...
Tungaloy SDMT1204PDSR-MJ AH120 Square Milling Insert for Steel and Cast Iron - BEYOND

Tungaloy SDMT1204PDSR-MJ AH120 Square Milling Insert for Steel and Cast Iron

$142.70 USD
Tungaloy SDMT1204PDSR-MJ AH120 Insert High-Performance Face Milling | AH120 Tough PVD Grade | -MJ General Chipbreaker What is the most reliable insert for general face milling? The Tungaloy SDMT1204PDSR-MJ AH120...
Tungaloy SDMB26152 AH120 / GH330 Square Carbide Milling Inserts - BEYOND

Tungaloy SDMB26152 AH120 / GH330 Square Carbide Milling Inserts

$50.36 USD – $53.80 USD
Tungaloy SDMB26152 AH120 & GH330 Inserts Professional Slotting & Side Milling | Heavy-Duty PVD Grades | Made in Japan Which grade should I choose for heavy-duty steel milling? The Tungaloy...
Tungaloy SPMT090308-PS AH725 PVD Carbide Milling Insert for Steel

Tungaloy SPMT090308-PS AH725 PVD Carbide Milling Insert for Steel

$48.85 USD
Tungaloy SPMT090308-PS AH725 Milling Insert Multi-Purpose Milling | Premium AH725 PVD Grade | High Edge Security Which milling insert is best for stainless steel and general steel alloys? The Tungaloy...
Tungaloy SPMT090308-24 T9125 Carbide Milling Insert for Steel

Tungaloy SPMT090308-24 T9125 Carbide Milling Insert for Steel

$77.21 USD
Tungaloy SPMT090308-24 T9125 Milling Insert High-Performance Steel Milling | Premium T9125 CVD Grade | 0.8mm Corner Radius What is the most durable carbide insert for high-speed milling of steel? The...
Tungaloy SPMT090304-24 T9125 Carbide Milling Insert for Steel

Tungaloy SPMT090304-24 T9125 Carbide Milling Insert for Steel

$77.21 USD
Tungaloy SPMT090304-24 T9125 Milling Insert High-Speed Steel Milling | Premium T9125 CVD Grade | Stable & Durable What is the most reliable carbide insert for high-speed steel milling? The Tungaloy...
Tungaloy SPMT090308-PS NS9530 Cermet Milling Insert for Precision Steel Finishing

Tungaloy SPMT090308-PS NS9530 Cermet Milling Insert for Precision Steel Finishing

$47.32 USD
Tungaloy SPMT090308-PS NS9530 Milling Insert High-Gloss Steel Finishing | Premium NS9530 Cermet | -PS Positive Geometry How can I achieve a mirror-like finish in steel milling? The Tungaloy SPMT090308-PS NS9530...
Tungaloy SPMT090308-24 NS9530 Cermet Milling Insert for Steel Finishing

Tungaloy SPMT090308-24 NS9530 Cermet Milling Insert for Steel Finishing

$45.02 USD
Tungaloy SPMT090308-24 NS9530 Milling Insert Precision Steel Milling | Premium NS9530 Cermet | 0.8mm Corner Radius What is the best insert for a high-gloss finish in steel milling? The Tungaloy...
Tungaloy SPMT090304-24 NS9530 Cermet Milling Insert for Steel

Tungaloy SPMT090304-24 NS9530 Cermet Milling Insert for Steel

$45.02 USD
Tungaloy SPMT090304-24 NS9530 Milling Insert High-Precision Steel Milling | Premium NS9530 Cermet | High Surface Luster Which cermet insert provides the best surface finish for steel milling? The Tungaloy SPMT090304-24...

Tungaloy SC & SP Series 90° Square Positive Inserts | SCMT SPGT Turning

Tungaloy SC & SP 90° Square Positive Inserts

Balanced Cutting Force | High Structural Integrity | Precision Internal Boring

Which 90° square positive insert is best for stable boring in vibration-prone setups?

The Tungaloy SC and SP Series (including SCMT, SPGT, and SCMW) are designed for precision turning where a balance of strength and low cutting resistance is required. Featuring a 90° square geometry with a positive relief angle (7° or 11°), these inserts provide a much stronger cutting edge than rhombic shapes while maintaining the low-vibration characteristics of a positive rake. Primarily used in internal boring bars and external facing, these inserts utilize Tungaloy’s AH725 PVD coating for versatile alloy machining and NS530 Cermet for high-speed finishing. The -PS and -JS chipbreakers are specifically tuned to handle light-to-medium depths of cut, ensuring excellent chip control even in ductile steels.

Decoding Tungaloy SC/SP Series Codes

S
Square 90°
C / P
7°/11° Relief
M / G
Tolerance
T / W
Hole/Fix
09/12
Size (mm)
T3/04
Thickness
04/08
Radius

Balanced 90° Geometry

Square shape provides 4 usable cutting edges on positive inserts (depending on model) with much higher edge strength than triangular (T) or rhombic (D) inserts.

Enhanced Stability

Positive relief angles (C=7°, P=11°) reduce tool-to-workpiece friction, critical for boring operations and finishing thin-walled tubes.

Versatile Grade Range

From the tough AH725 PVD for stainless steel to the mirror-finishing NS530 Cermet, Tungaloy covers every industrial material requirement.

Cross-Reference: Metric vs. Imperial Models

ISO Metric ANSI Imperial I.C. Size Application
SCMT 09T304-PS SCMT 32.51-PS 9.525 mm Medium Boring
SPGT 120408-JS SPGT 432-JS 12.7 mm Precision Finishing

Suggested Cutting Parameters

Finishing (NS530 Cermet) Vc: 150-280 m/min | f: 0.05-0.15 mm/rev
Stainless (AH725 Carbide) Vc: 100-180 m/min | f: 0.10-0.25 mm/rev

Matching Boring Bars & Holders

Compatible with S-SSCR, S-SCPR, and E-SCMT Boring Bars

Shop High-Rigidity Boring Bars

Target Applications

  • Large-diameter internal boring where stability is key.
  • Facing operations on carbon steel and alloy forgings.
  • Boring of aerospace engine components in Superalloys.
  • Precision finishing on hydraulic cylinders.

Equipment Compatibility

Seamlessly integrates with CNC turning centers and VTLs from Haas, Mazak, DMG Mori, and Okuma. Optimized for use with both carbide and steel boring bars.

Tungaloy SC/SP Grade Guide

Grade Composition Best Use Case
T9215 CVD Carbide High-speed steel turning; maximum crater wear resistance.
AH725 PVD Carbide Universal Grade: Stainless, Superalloys, and Steels.
NS530 Cermet Mirror-like finishing for carbon and alloy steel parts.

The BEYOND CNC Advantage

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Global Machinist Reports

⭐⭐⭐⭐⭐ "Boring Bar Perfection" - Mark T., USA
"Switched to SCMT for our deep boring. The 7-degree relief makes a huge difference in vibration control. Tungaloy quality is unmatched."

⭐⭐⭐⭐⭐ "Mirror Finish on Alloy" - K. Kobayashi, Japan
"NS530 cermet in SPGT geometry gives us a perfect Ra 0.4 finish. Very consistent tool life."

⭐⭐⭐⭐ "Reliable Performance" - E. Hoffmann, Germany
"Standardizing our facing tools to SCMT 12 series. BEYOND CNC provided excellent technical advice on speeds and feeds."

Technical FAQ

Q: What is the main difference between SC and SP inserts?

A: The relief angle. SC inserts have a 7° relief (standard), while SP inserts have an 11° relief. SP is better for very low cutting force or machining small diameters.

Q: Can I use SCMT for roughing?

A: Yes, in larger sizes (1204), SCMT is very capable of medium roughing due to its robust 90° square cross-section.

Material Choice Tip

For the best results in boring operations, use **AH725** for general-purpose work and **NS530 Cermet** strictly for light finishing at high speeds. Avoid using Cermet for interrupted cuts to prevent edge chipping. **BEYOND CNC** - Excellence in Tooling.

© Technical Document by Beyond Li - CNC Tooling Technical Director