ZCC.CT SNMG190612 YBC251 Carbide Turning Inserts for Steel Machining
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ZCC.CT SNMG190612 YBC251 Turning Insert
Professional CVD Coated Carbide for Steel Semi-Finishing
Product Overview
"Which CNC insert is best for stable semi-finishing of carbon steel and alloy steel with high efficiency?"
The ZCC.CT SNMG190612 YBC251 is a premier industrial solution designed for the demanding requirements of steel turning (ISO P). Utilizing the YBC251 grade—a multi-layer CVD coating (TiCN + Thick Al2O3)—this insert provides a perfect balance between wear resistance and impact toughness. It is specifically engineered to handle medium-speed cutting while maintaining a superior surface finish.
Key Performance Advantages
Technical Specifications
Square
0° Relief
Tolerance
Hole/Chip
19.05mm
6.35mm
1.2 Radius
| Standard | Metric Designation | Imperial Designation |
|---|---|---|
| ISO / ANSI | SNMG190612 | SNMG643 |
Recommended Machining Parameters
| Workpiece Material | Cutting Speed (Vc m/min) | Feed Rate (fn mm/rev) |
|---|---|---|
| Carbon Steel / Alloy Steel | 150 - 320 | 0.15 - 0.50 |
| Cast Iron | 120 - 280 | 0.20 - 0.55 |
Compatible Tool Holders (SNMG 1906 Series):
Applications
- Materials: Primarily for Carbon Steel, Alloy Steel, and Cast Iron.
- Process: Semi-finishing and light roughing operations.
- Environment: Suitable for both continuous and interrupted cutting.
Compatibility
Fits all standard ISO external and internal tool holders with 1906 (643) pocket size. Compatible with high-power CNC lathes and large-scale machining centers.
ZCC.CT Steel Turning Grade Matrix
| Grade | Type | Application |
|---|---|---|
| YBC151 | CVD | High Speed / Finishing |
| YBC251 | CVD | Semi-Finishing (Universal) |
| YBC351 | CVD | Heavy Roughing / Interrupted |
Why Professionals Choose Us
"Incredible tool life"
Replaced our more expensive Japanese inserts with ZCC.CT YBC251 for 1045 steel. Tool life is nearly identical at 40% less cost.
— Robert S., USA 🇺🇸"Beste Standzeit"
Sehr stabil bei semi-schlichten. Die Oberfläche ist perfekt.
— Hans G., Germany 🇩🇪"Ottimo prodotto"
Consegna veloce e inserti di alta qualità per tornitura di acciaio.
— Marco L., Italy 🇮🇹Expert Industrial FAQ
Q: Is the YBC251 grade suitable for stainless steel?
A: While YBC251 can machine some martensitic stainless steels, it is primarily optimized for ISO P (Steel). For austenitic stainless (like 304/316), we recommend the ZCC.CT YBM series.
Q: What is the benefit of the 1.2mm radius (SNMG190612)?
A: The 1.2mm radius provides increased edge strength and allows for higher feed rates compared to 0.4mm or 0.8mm, while still delivering an excellent semi-finish surface.
Q: Can this be used for dry machining?
A: Yes. The thick CVD Al2O3 layer provides excellent heat insulation, making it highly effective for dry turning operations at moderate speeds.
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.