Tungaloy SPMT090308-PS AH725 PVD Carbide Milling Insert for Steel

$48.85 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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Description

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 SPMT090308-PS AH725 is a highly versatile PVD-coated carbide insert designed for precision and stability. Featuring the AH725 grade, this insert excels in varied cutting conditions, particularly where edge toughness is required to prevent chipping. The -PS chipbreaker is specifically developed for light-to-medium milling, providing excellent chip control and reduced cutting forces. 100% Made in Japan, it is the professional choice for CNC operators seeking a "go-to" insert that handles steel, stainless steel, and heat-resistant alloys with ease.

AH725 PVD Coating

A high-Al-content (Al,Ti)N PVD coating combined with a dedicated tough substrate. It offers extreme resistance to adhesion and micro-chipping, even in interrupted cuts.

-PS High-Positive Geometry

The -PS geometry features a sharp cutting edge that minimizes work hardening. It is ideal for low-rigidity setups or thin-walled workpieces where vibration control is critical.

0.8mm Radius Durability

The 0.8mm (08) corner radius offers superior edge strength for heavy-duty applications while maintaining excellent feed capability and surface finish.

Decoding SPMT090308-PS Technical Nomenclature

S
Square
P
11° Relief
M
Tolerance
T
Hole/Fix
09
9.525mm IC
03
3.18mm Thk
08
0.8mm Rad.
-PS
Light Cut

3. Technical Specifications: Metric vs. Imperial

Parameter Metric (ISO) Imperial Equivalent
Inscribed Circle (IC) 9.525 mm 3/8" (SPMT 32.52)
Thickness (S) 3.18 mm 1/8"
Corner Radius (RE) 0.8 mm 1/32"
Material Grade AH725 (PVD) PVD Coated Carbide

Recommended Cutting Parameters (AH725)

  • Cutting Speed (Vc): 80 - 200 m/min (depending on material)
  • Feed per Tooth (fz): 0.10 - 0.25 mm/t
  • Depth of Cut (ap): 0.5 - 3.5 mm

*Pro Tip: For stainless steel, ensure adequate coolant flow to manage heat. For steel alloys, AH725 can run dry if air blast is used.*

4. Product Applications

  • General milling of carbon steels, alloy steels, and stainless steels.
  • Excellent for machining heat-resistant superalloys (HRSA).
  • Ideal for small-to-medium batch production with variable conditions.
  • Stable performance in interrupted cuts and face milling.

5. Tool Compatibility

Perfectly matches all standard Tungaloy indexable milling cutters (Tung-Tri, Tung-Turn) designed for SPMT 0903 inserts. Compatible with ISO standard tool holders.

7. Why Choose CNCHome-Beyond?

Genuine Tungaloy
100% Original Made in Japan
Industrial Support
Expert B2B Technical Assistance
Global Logistics
Fast Fulfillment & Factory Tracking
Stable Inventory
Reliable Supply for Large Batches

Reviews from Machining Professionals

⭐⭐⭐⭐⭐ "The Ultimate All-Rounder" - Marc D., France
"We use the AH725 grade for almost everything. From 4140 steel to 304 stainless, it just works. No sudden breakages."

⭐⭐⭐⭐⭐ "Great Edge Security" - Steve J., UK
"Ordered the SPMT090308-PS for a difficult interrupted cut job. The AH725 coating held up perfectly. Excellent Japanese quality."

⭐⭐⭐⭐ "Very Stable Performance" - Kenji S., Japan
"The -PS geometry is very sharp. It reduced the vibrations on our small CNC mill significantly. Highly recommended."

⭐⭐⭐⭐⭐ "Excellent B2B Partner" - A. Kumar, Singapore
"CNCHome-Beyond delivered original Tungaloy stock quickly. These inserts are the backbone of our production line for alloy steels."

⭐⭐⭐⭐⭐ "High Versatility" - Luca B., Italy
"We don't have to change inserts as often when switching between materials. This SPMT 08 radius version is very tough."

8. FAQ - CNC Expert Support

Q: Can AH725 handle stainless steel?

A: Absolutely. AH725 is one of Tungaloy's most versatile grades and excels in stainless steel due to its high PVD coating adhesion and tough substrate.

Q: What is the benefit of the -PS geometry?

A: The -PS is a 'High-Positive' chipbreaker. It features a sharper cutting edge which reduces cutting force and heat, perfect for delicate parts or unstable setups.

Q: Is this a genuine Tungaloy product?

A: Yes. All our Tungaloy products are 100% original, imported directly, ensuring the Japanese manufacturing precision you expect.

Expert Tip: PVD vs. CVD Milling

The **AH725 PVD** grade is designed for versatility and edge security. Unlike CVD coatings, PVD coatings are thinner and keep the cutting edge sharp, which is essential for gummy materials like stainless steel. Use AH725 for multi-material environments where reliability is more important than pure high-speed material removal. Trust **Tungaloy Japan** for stable CNC performance.

© Technical Data by cnchome-beyond.com - CNC Tool Authority

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.