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.

Tungaloy SCMT120404-24 T9125 Square Carbide Turning Insert for Steel

Name: Tungaloy SCMT120404-24 T9125 Square Carbide Turning Insert for Steel
SKU: SCMT120404-24 T9125
Price: 90.80 USD
Availability: InStock

$90.80 USD

Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.

💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF

Description

Description

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 is a robust square carbide turning insert designed specifically for the high-speed processing of ISO P (Steel) materials. Featuring the world-renowned T9125 CVD coating, this insert provides an exceptional balance of wear resistance and toughness, making it ideal for continuous to light interrupted cuts. The 24 chipbreaker is engineered for finishing and medium cutting applications, delivering excellent chip control and reducing cutting forces. Made in Japan, these inserts are a favorite for CNC professionals seeking to maximize productivity while maintaining high surface integrity in carbon and alloy steels.

Premium T9125 CVD Grade

Combines a high-hardness Al2O3 layer with a tough TiCN base, offering superior heat resistance for high surface speeds (Vc).

24 Finishing Breaker

The positive rake angle design ensures sharp cutting action, reducing vibration and achieving Ra-standard surface finishes.

PremiumTec Treatment

Tungaloy's unique surface treatment smooths the coating, preventing chip welding and ensuring predictable tool life.

Decoding SCMT120404-24 Technical Nomenclature

S
Square

C
7° Relief

M
Tolerance

T
Hole/Fix

12
12.7mm Size

04
4.76mm Thick

04
0.4mm Rad.

24
Breaker

3. Technical Specifications: Metric vs. Imperial

Feature	Metric (ISO)	Imperial Equiv.
Inscribed Circle (IC)	12.70 mm	1/2 inch
Thickness (S)	4.76 mm	3/16 inch
Corner Radius (RE)	0.4 mm	1/64 inch
Hole Diameter (D1)	5.16 mm	0.203 inch

Recommended Cutting Parameters (T9125 Grade)

Cutting Speed (Vc): 150 - 350 m/min (Continuous Finish-Turning)
Feed Rate (f): 0.10 - 0.30 mm/rev (Breaker Optimization)
Depth of Cut (Ap): 0.5 - 3.0 mm (Medium to Finish)

*Pro Tip: For improved life in alloy steel, use high-pressure coolant directed at the cutting edge.*

4. Product Applications

Outer and inner diameter turning of carbon steel.
Machining of alloy steel shafts and large gears.
Finishing operations on automotive structural parts.
High-volume production lines for industrial fasteners.

5. Tool Compatibility

Fits standard SSDCN, SSKCR/L, and SSGCR/L turning tool holders designed for 12.7mm square inserts (Size 1204). Compatible with all major CNC lathe spindles.

7. Why Choose CNCHome-Beyond?

Genuine Tungaloy
100% Original Japan Stock

OEM Partnership
Supply Chain for Geely Auto

Expert Support
Technical Machining Guidance

Global Logistics
Fast Shipping to 50+ Countries

Verified Customer Feedback

⭐⭐⭐⭐⭐ "Workhorse Grade" - D. Miller, USA
"T9125 is my go-to for steel turning. Predictable tool life and handles high RPM without melting down."

⭐⭐⭐⭐⭐ "Excellent Chip Control" - K. Wagner, Germany
"The 24 breaker on these SCMT inserts works wonders on our CNC lathes. No birdnesting even on gummy steels."

⭐⭐⭐⭐ "Very Stable" - T. Sato, Japan
"Consistent results. Tungaloy quality is always impressive. Used for automotive gear production."

⭐⭐⭐⭐⭐ "Original Packaging" - G. Rossi, Italy
"Fast delivery and genuine products. Performance in 4140 alloy steel is outstanding."

⭐⭐⭐⭐⭐ "Great Price Performance" - A. Tan, Singapore
"Cheaper per part than our previous supplier. Tungaloy T9125 is much more durable at high feed rates."

8. FAQ - Machining Support

Q: Can I use T9125 for stainless steel?

A: T9125 is optimized for ISO P (Steel). For stainless steel (ISO M), we recommend Tungaloy AH series or T6130 grade.

Q: What is the benefit of the CVD coating?

A: CVD coatings are thicker than PVD, providing superior thermal protection and wear resistance at the higher temperatures found in high-speed turning.

Q: Does it fit SSDCN tool holders?

A: Yes, it is a standard ISO SCMT 1204 size and is perfectly compatible with SSDCN series holders.

Expert Tip: CVD vs. Cermet for Steel

While cermet offers a mirror finish, the T9125 CVD coated carbide is significantly tougher. If your part involves any interruption (like a cross-hole or keyway) or you need higher metal removal rates, the SCMT120404 T9125 is the safer, more productive choice for industrial-scale manufacturing.

Need Help With Tungaloy Inserts?

Looking for a Tungaloy equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.

EQUIVALENT FINDER Cross-Reference to 15 Brands Find equivalent grades from Sandvik, Iscar, Kyocera, Walter, Mitsubishi and 10 more. FREE CATALOG Download PDF Catalogs 15+ insert catalogs with grade, ISO code, and tolerance data sheets. GRADE TOOL Find the Best Grade Insert grade selector for steel, stainless, cast iron, and superalloys.

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This Tungaloy insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.

Technical FAQ & Buying Guide

How do I choose the correct specification?

When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.

How can I check compatibility with my existing setup?

For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.

What quantity and price unit am I ordering?

Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.

How should I choose cutting parameters?

Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.

Are bulk discounts available?

Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.

When will my order ship and arrive?

According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.