ZCC.CT SNMG120408-DM YBM251 square carbide turning insert for stainless steel machining

ZCC.CT SNMG120408-DM YBM251 Carbide Turning Inserts for Stainless Steel

$75.72 USD

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

american expressmasterpaypalvisaapple paygoogle payshopify pay
Order in the next [totalHours] hours %M minutes to get it between and
Description

ZCC.CT SNMG120408-DM YBM251 Turning Insert

General Purpose CVD Coated Carbide for Stainless Steel Efficiency

Product Overview

"Which carbide insert offers the best balance of wear resistance and toughness for medium turning of 304 and 316 stainless steel?"

The ZCC.CT SNMG120408-DM in YBM251 grade is the industrial standard for ISO M (Stainless Steel) turning. Engineered with a specialized CVD coating (TiCN + Al2O3), this grade provides excellent thermal stability and resistance to built-up edges (BUE). The DM chipbreaker (Double-sided Medium) is designed with a balanced geometry that ensures smooth chip evacuation during medium-duty machining, making it highly effective for components in the pump, valve, and food industries.

Core Performance Features

● YBM251 Grade: The "All-Rounder" for stainless steel, balancing high toughness with crater wear resistance.
● Advanced CVD Coating: Thick Al2O3 layer acts as a heat shield during high-speed cutting.
● DM Chip Control: Specifically honed for medium machining ranges to eliminate "long stringy chips."

Technical Specifications

ISO Code Explanation: SNMG 12 04 08 - DM

S
Square
N
0° Relief
M
Tol. Class
G
Hole/Chip
12
12.7mm
04
4.76mm
08
0.8 Rad
DM
Medium
Standard Designation Dimensions (IC / T / R)
Metric (ISO) SNMG120408-DM 12.7mm / 4.76mm / 0.8mm
Imperial (ANSI) SNMG 432-DM 0.5" / 0.187" / 0.031"

Recommended Cutting Parameters

Material Vc (m/min) fn (mm/rev) ap (mm)
Stainless (304/316) 150 - 240 0.15 - 0.45 1.0 - 4.5
Duplex Stainless 90 - 160 0.12 - 0.40 1.0 - 3.5

RECOMMENDED TOOL HOLDERS:

PSSNR/L MSSNR/L DSDNN
Shop Compatible Holders →

Main Applications

  • General turning of austenitic stainless steels (300 series).
  • Semi-finishing and medium roughing of shafts and valves.
  • Ideal for food processing and medical industry components.
  • Suitable for continuous to light interrupted cuts.

Compatibility

Industry-standard 12.7mm (1/2") Inscribed Circle geometry. Optimized for CNC turning centers and precision manual lathes. Compatible with ISO-standard square pocket holders.

ZCC.CT Stainless Steel Grade Matrix

Grade Cutting Speed Main Condition
YBM151 Highest Continuous / Finish
YBM251 (Current) Medium-High General Purpose / All-Round
YBM351 Medium Heavy Interruption / Roughing

Customer Success Stories

★★★★★

"Consistent quality on 316L parts. The DM chipbreaker makes the job much cleaner."

- Robert K., USA 🇺🇸
★★★★★

"Sehr zuverlässig für die Serienfertigung von Edelstahlwellen. Top Preis-Leistung."

- Dieter H., Germany 🇩🇪
★★★★★

"Ottimo inserto per acciai inossidabili. La durata è eccellente."

- Giorgio M., Italy 🇮🇹
★★★★★

"Reliable supply and genuine ZCC parts. Best general grade for our shop."

- Kenji Y., Japan 🇯🇵

Industrial FAQ

Q: Can I use YBM251 for carbon steel turning?
A: While possible in some cases, YBM grades are specifically optimized for stainless steel. For steel (ISO P), the YBC series (e.g., YBC251) will provide longer tool life.
Q: What range is the DM chipbreaker suited for?
A: The DM chipbreaker is designed for medium machining with a feed rate (fn) between 0.15 - 0.45 mm/rev and a depth of cut (ap) up to 4.5mm.
Q: Does it require coolant?
A: For stainless steel turning, high-pressure coolant is highly recommended to improve chip evacuation and cooling of the cutting edge.

Troubleshooting: Crater wear? Reduce cutting speed (Vc). Edge chipping? Reduce feed (fn) or switch to YBM351 grade.

Equivalent Models: Sandvik SNMG 12 04 08-PM, Mitsubishi SNMG120408-MA, Kyocera SNMG120408-MS

Workpiece Material Matrix: 304, 316, 316L, 17-4PH, 2205 Duplex.

 

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.