APKT150412R-YBM351 Milling Insert - High Precision Carbide for Steel & Stainless
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APKT150412R YBM351 CVD Carbide Milling Insert – High-Toughness Grade for Steel & Stainless Steel in Unfavorable Conditions
ZCC.CT | ISO APKT | CVD Multi-Layer Coating YBM351 | Right-Hand (R) | Corner Radius R1.2 | 10 pcs/pack
1. Product Overview
Which milling insert handles interrupted cuts, heavy feeds, and unstable setups on steel and stainless steel? The ZCC.CT APKT150412R YBM351 is engineered for exactly these demanding scenarios. Featuring the YBM351 CVD multi-layer coating — a high-toughness grade with superior thermal barrier and crater wear resistance — this insert maintains cutting performance even under unfavorable machining conditions such as interrupted cuts, poor fixturing, scale, or variable depth of cut. The larger APKT150412 geometry with R1.2 corner radius provides greater edge strength for heavier feeds and more aggressive milling strategies on carbon steel, alloy steel, and austenitic stainless steel.
ISO PISO MCVD CoatedUnfavorable ConditionsHigh ToughnessZCC.CT
Designation Decoder – What Each Letter & Number Means
A = 85° Parallelogram
P = 11° (positive)
K = ±0.13mm
T = Hole + Chipbreaker
~15mm IC
4.0mm
R1.2mm
R = Right-Hand
CVD Multi-Layer High-Toughness
2. Key Features
🛡️ YBM351 CVD Multi-Layer Coating
Advanced CVD TiCN + Al₂O₃ + TiN stack delivers exceptional thermal barrier, crater wear resistance, and flank wear resistance on steel and stainless steel.
🔧 High-Toughness Substrate
YBM351 combines a tough carbide substrate with CVD coating to resist micro-chipping and edge fracture during interrupted cuts, scale, and variable depth of cut.
⚙️ R1.2 Corner Radius
Larger nose radius distributes cutting forces over a wider edge area — ideal for heavy feeds, rough milling, and unstable setups where edge strength is critical.
📐 Right-Hand (R) Geometry
Standard right-hand orientation compatible with the majority of APKT150412 cutter bodies. Ensures correct chip flow direction and insert seating.
📦 10 pcs/Pack
Factory-sealed, individually inspected. Consistent coating thickness and dimensional accuracy across the full batch.
🌎 ISO APKT Standard
Fully interchangeable with APKT150412R inserts from Sandvik, Iscar, Kennametal, and Mitsubishi. Drop-in replacement for existing setups.
3. Technical Specifications
| Parameter | Metric | Imperial |
|---|---|---|
| Designation | APKT150412R YBM351 | |
| Insert Shape | 85° Parallelogram (A-type) | |
| Cutting Edge Length (IC) | ~15 mm | ~0.591 in |
| Insert Thickness (S) | 4.0 mm | 0.157 in |
| Corner Radius (r) | 1.2 mm | 0.047 in |
| Carbide Grade | YBM351 (CVD Multi-Layer High-Toughness) | |
| Coating Type | CVD TiCN + Al₂O₃ + TiN | |
| Hand of Cut | R (Right-Hand) | |
| ISO Application | P (Steel), M (Stainless Steel) — Unfavorable Conditions | |
| Clearance Angle | 11° (Positive) | |
| Pack Quantity | 10 pcs | |
| Country of Origin | China (ZCC.CT) | |
Recommended Cutting Parameters
| Material | Vc (m/min) | Vc (SFM) | fz (mm/tooth) | fz (in/tooth) | ap (mm) | ap (in) |
|---|---|---|---|---|---|---|
| Carbon Steel (P10–P30) | 120–220 | 394–722 | 0.10–0.30 | 0.004–0.012 | 1.0–4.0 | 0.039–0.157 |
| Alloy Steel (P30–P40) | 80–160 | 262–525 | 0.10–0.25 | 0.004–0.010 | 1.0–3.0 | 0.039–0.118 |
| Stainless Steel (M20–M30) | 80–150 | 262–492 | 0.08–0.20 | 0.003–0.008 | 0.5–2.5 | 0.020–0.098 |
| Unfavorable / Interrupted | 60–120 | 197–394 | 0.08–0.18 | 0.003–0.007 | 0.5–2.0 | 0.020–0.079 |
⚠️ Reference values only. Reduce Vc by 20–30% for interrupted cuts or poor fixturing. Use flood coolant on stainless steel.
Compatible Tool Holders (APKT150412 Series)
🔧 Recommended ZCC.CT Milling Cutter Bodies
The APKT150412R insert is compatible with the following ZCC.CT face milling and shoulder milling cutter bodies:
- EMP01-063-A22-AP15-04 – Ø63mm Face Mill, 4-tooth, 22mm arbor
- EMP01-080-A27-AP15-05 – Ø80mm Face Mill, 5-tooth, 27mm arbor
- EMP01-100-A32-AP15-06 – Ø100mm Face Mill, 6-tooth, 32mm arbor
- EMP01-125-A32-AP15-08 – Ø125mm Face Mill, 8-tooth, 32mm arbor
- EMP01-160-A40-AP15-10 – Ø160mm Face Mill, 10-tooth, 40mm arbor
📩 Contact us for compatibility with Sandvik CoroMill 245, Iscar HELIDO 845, or Kennametal KSSM equivalent bodies.
4. Applications
⚒️ Heavy Rough Milling
Face milling of carbon and alloy steel billets, forgings, and castings with scale or hard skin — where edge toughness is more critical than cutting speed.
🔧 Interrupted Cuts
Milling of slotted, keyway, or multi-surface workpieces where the insert repeatedly enters and exits the cut. YBM351 resists impact-induced micro-chipping.
🛠️ Stainless Steel Milling
Face and shoulder milling of 304, 316, and 17-4PH stainless steel where work-hardening and heat generation demand a tough, thermally stable coating.
🏭 General Engineering Steel
Mold bases, die blocks, structural steel frames, and machine tool components requiring reliable performance under variable or unstable cutting conditions.
5. Cross-Reference & Compatibility
| Brand | Equivalent Designation | Grade Equivalent |
|---|---|---|
| Sandvik | APKT 150412R-MM | GC4240 (CVD tough) |
| Iscar | APKT 150412 PDTR | IC8250 (CVD) |
| Kennametal | APKT 150412R | KC9225 (CVD) |
| Mitsubishi | APKT150412R-MA | VP15TF (CVD) |
| ZCC.CT | APKT150412R YBM351 | YBM351 (CVD high-toughness) |
6. ZCC.CT Grade Comparison
| Grade | Coating | ISO Group | Best For | vs YBM351 |
|---|---|---|---|---|
| YBM351 | CVD Multi-Layer | P, M | Steel & SS, unfavorable/interrupted | — (this product) |
| YBC302 | CVD Multi-Layer | P | Carbon & alloy steel, normal conditions | Less tough; better for stable cuts |
| YBG102 | CVD TiCN+Al₂O₃ | P, M | Steel & stainless, normal conditions | Higher speed; less impact resistance |
| YBG202 | PVD TiAlN | M, S | Stainless, superalloys | Better for superalloys; less tough on steel |
| YD201 | Uncoated | K, N | Cast iron, non-ferrous | Not suitable for steel |
YBM351 vs YBC302: YBM351 prioritizes toughness for unfavorable conditions. YBC302 offers higher wear resistance for stable, continuous cuts at higher speeds.
7. Why Choose CNCHome-Beyond?
✅ Authorized ZCC.CT Distributor
Genuine product sourced directly from ZCC Cutting Tools. No counterfeits, no grey-market stock.
🚀 Fast Global Shipping
Ships from Hong Kong. DHL/FedEx express available. Delivered in 5–10 business days worldwide.
🔍 100% Batch Inspection
Every pack dimensionally verified and coating-checked before dispatch. CoC available on request.
💬 Free Technical Support
Engineering team provides cutting parameter advice and toolholder compatibility guidance at no charge.
Customer Reviews
"Running these on 4140 alloy steel with interrupted cuts. Zero chipping after 3 hours of production. Outlasted our previous Sandvik inserts by 20%."
"Verwenden wir für Edelstahl 316L Planfräsen. Sehr gute Standzeit auch bei unterbrochenen Schnitten. Preis-Leistung ausgezeichnet."
"Ottimo per la fresatura di acciaio inox con condizioni sfavorevoli. Buona resistenza all’usura. Consegna puntuale."
"Stainless steel milling with interrupted cuts. No secondary chipping observed. ZCC quality is reliable and consistent."
"Used for milling forged steel flanges with heavy scale. The R1.2 radius handles the impact well. Consistent performance across all 10 inserts."
"Good toughness on interrupted steel cuts. Slightly lower speed than our usual grade but much better edge life. Will continue using."
8. Frequently Asked Questions
Related Search Terms
💡 Grade Selection Tip: Toughness vs. Wear Resistance
In carbide grade selection, toughness and wear resistance are inversely related. YBM351 sits at the tough end of the ZCC.CT milling grade spectrum — it sacrifices some wear resistance to gain impact resistance, making it the right choice for interrupted cuts, scale, and unstable setups on steel and stainless steel. For stable, continuous cuts at higher speeds, YBC302 or YBG102 will deliver longer tool life. For stainless steel and superalloys requiring high-temperature performance, consider YBG202 (PVD TiAlN). Always match the grade to the worst-case condition in your operation — a tough grade on a stable cut loses some efficiency; a wear-resistant grade on an interrupted cut loses the insert.
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.