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

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

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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

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.