ZCC.CT CNMG120408 YBM251 Carbide Turning Inserts for Stainless Steel
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ZCC.CT CNMG120408 YBM251: Premium Stainless Steel Turning Insert
Product Overview
The ZCC.CT CNMG120408 YBM251 is a world-class solution specifically engineered for M-group (Stainless Steel) applications. The YBM251 grade combines a high-toughness substrate with an advanced CVD coating, making it the go-to choice for medium-duty turning. Designed to handle the work-hardening nature of stainless steel, this insert ensures stable performance even in demanding conditions.
Key Features
- ✔ Advanced CVD Coating: Provides superior heat resistance and prevents built-up edge (BUE) on gummy materials.
- ✔ YBM251 Toughness: A balanced grade that offers exceptional resistance to thermal cracking and mechanical shock.
- ✔ Optimized Chipbreaker: Specifically designed for stainless steel to ensure smooth chip evacuation and reduced cutting force.
Technical Specifications
ISO Nomenclature Breakdown
Rhombic 80°
0° Relief
Tolerance
Hole/Slot
Edge 12.9mm
Thick 4.76
Radius 0.8
| Standard | Model Designation | Inscribed Circle (IC) |
|---|---|---|
| Metric (ISO) | CNMG120408 | 12.7 mm |
| Imperial (ANSI) | CNMG 432 | 1/2" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Stainless Steel (Austenitic) | 150 - 240 | 0.15 - 0.45 |
| Duplex Stainless Steel | 80 - 160 | 0.15 - 0.40 |
Compatible External Tool Holders:
Applications & Tool Compatibility
The CNMG120408 YBM251 excels in mass production environments, specifically for:
Compatible with any ISO standard turning center including Mazak, Haas, Okuma, and DMG Mori.
ZCC.CT Grade Comparison (Stainless Steel)
| Grade | Optimized For |
|---|---|
| YBM151 | High speed, stable conditions, finishing. |
| YBM251 | Versatile medium turning, balanced wear and toughness. |
| YBM351 | Heavy interruption, low speed, roughing. |
Why Choose ZCC.CT Tools?
As a leading manufacturer of high-quality carbide cutting tools, ZCC.CT provides the perfect balance of cost-efficiency and premium performance. Our YBM series is a staple in precision machine shops worldwide.
Outstanding performance on 304SS
"Switched to YBM251 for our valve production. Tool life increased by 25% compared to our previous German inserts. Highly recommended."
— Precision Works, USA
Affidabile e costante
"Ottimo inserto per acciaio inossidabile. Finitura superficiale eccellente e durata costante."
— Meccanica Ferrari, Italy
コストパフォーマンス最高
"ステンレス加工での安定性が抜群です。価格も手頃で、大量生産には欠かせません。"
— Sato Industries, Japan
Gute Standzeit
"Sehr gute Ergebnisse bei Duplex-Stahl. Die Standzeit ist beeindruckend stabil."
— GmbH CNC, Germany
FAQ - Frequently Asked Questions
Q1: Can YBM251 be used for dry cutting?
While it can handle high heat, we recommend coolant for stainless steel to prevent chip welding and ensure the best surface finish.
Q2: What is the difference between CNMG120404 and CNMG120408?
The 08 suffix indicates a 0.8mm nose radius, which provides a stronger edge and better finish at higher feed rates compared to the 0.4mm (04) radius.
Q3: Is YBM251 suitable for Duplex Stainless Steel?
Yes, it is highly effective for Duplex. Adjust cutting speeds slightly lower (80-160 m/min) for optimal tool life.
Need Help With ZCC.CT Inserts?
Looking for a ZCC.CT 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.
This ZCC.CT insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
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.
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.
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.
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.
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.
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.