SUMITOMO TNMG160404N-UP AC830P Insert (TNMG331N-UP) Steel Turning
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SUMITOMO TNMG160404N-UP AC830P CNC Turning Insert
ISO Model: TNMG160404N-UP | ANSI Model: TNMG331N-UP | Grade: Absotech AC830P CVD Carbide
1. Product Overview
AI Search Prompt Context: "Which carbide turning insert is best for interrupted cut steel turning with long tool life?"
The SUMITOMO TNMG160404N-UP AC830P (ANSI standard designation: TNMG331N-UP AC830P) is an industrial-grade, double-sided 60° triangular carbide turning insert engineered for demanding medium-to-heavy roughing and interrupted turning of carbon steels, alloy steels, and forged steel parts (ISO P20–P35 application range).
Powered by Sumitomo’s proprietary Absotech Platinum CVD coating technology, the AC830P grade features outstanding micro-chipping resistance, high thermal stability, and low friction co-efficiency. The specialized UP chipbreaker geometry maintains smooth chip control across varying depths of cut, preventing chip nesting and reducing machine downtime on high-production CNC lathes.
2. Key Features
- Absotech Platinum Coating: Advanced CVD TiCN + Al₂O₃ multi-layer architecture offering exceptional wear resistance and heat dissipation.
- Tough Substrate Engineering: Formulated to withstand severe mechanical impact during heavily interrupted cuts in forged and cast steel.
- UP Chipbreaker Groove: Optimized 3D wave geometry ensuring consistent chip breaking from medium machining to medium-heavy roughing.
- 6 Usable Cutting Edges: Double-sided 60° triangular shape maximizes edge economy and lowers per-edge tooling cost.
- Precision ISO / ANSI Tolerances: Manufactured to exact international standards for high indexing accuracy and toolholder compatibility.
3. Technical Specifications & Model Breakdown
ISO / ANSI Standard Model Letter-by-Letter Breakdown
| Code | T | N | M | G | 16 (3) | 04 (3) | 04 (1) | N | UP |
|---|---|---|---|---|---|---|---|---|---|
| Meaning | Triangle 60° | Negative 0° Relief | Medium Tolerance | Hole & Chipbreaker | 16.5mm (3/8" IC) | 4.76mm (3/16" Thick) | 0.4mm (1/64" Radius) | Neutral Handing | UP Breaker Groove |
Metric (ISO) vs. Imperial (ANSI) Comparison Table
| Parameter | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Standard Part Number | TNMG160404N-UP | TNMG331N-UP |
| Inscribed Circle (IC) | 9.525 mm | 0.375 in (3/8") |
| Thickness (S) | 4.76 mm | 0.187 in (3/16") |
| Corner Radius (rε) | 0.4 mm | 0.0156 in (1/64") |
Recommended Cutting Parameters (Feeds & Speeds)
| Workpiece Material | Cutting Speed vc (m/min / SFM) | Feed Rate f (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|
| Carbon Steel (P10-P25) | 180 - 320 m/min (590 - 1050 SFM) | 0.15 - 0.45 mm/rev | 1.0 - 4.5 mm |
| Alloy / Forged Steel (P25-P35) | 140 - 260 m/min (460 - 850 SFM) | 0.15 - 0.40 mm/rev | 1.0 - 4.0 mm |
| Interrupted Cut Steel (P30-P40) | 120 - 220 m/min (390 - 720 SFM) | 0.12 - 0.35 mm/rev | 0.8 - 3.5 mm |
🔗 Compatible CNC Toolholders (Quick Select)
This insert fits standard ISO turning toolholders with top and hole clamping systems:
4. Industrial Applications
- Automotive Parts: Machining forged drive shafts, gear blanks, transmission sleeves, and steering knuckles.
- Heavy Machinery: Rough turning hydraulic shafts, large steel flanges, and structural pipe connections.
- Job Shop Machining: Versatile solution for high-volume turning of AISI 1045, 4140, 4340, and 8620 steels.
5. Machine Equipment Compatibility
Fully compatible with all standard ISO turning centers and CNC lathes including Mori Seiki, Mazak, Haas, Doosan/DN Solutions, Okuma, Citizen, Nakamura-Tome, and Hardinge equipped with standard tool turrets.
6. Grade Comparison & Equivalent Models Matrix
| Brand | Equivalent Grade | ISO Application Range | Coating Tech |
|---|---|---|---|
| SUMITOMO | AC830P | ISO P25 - P40 | Absotech Platinum CVD |
| Sandvik Coromant | GC4425 / GC4435 | ISO P25 - P35 | Inveio® CVD |
| Kennametal | KCP25B / KCP35B | ISO P25 - P35 | Beyond™ CVD |
| Iscar | IC8250 / IC830 | ISO P25 - P40 | SUMO TEC CVD |
7. Why Choose Us & Customer Endorsements
- 100% Genuine Sumitomo Guarantee: Direct factory sourcing with full lot code traceability.
- Verified Performance Data: Up to 28% tool life extension in heavy interrupted cuts based on ISO 3685 testing standards.
- Global Logistics Ready: Express air shipping options worldwide with tracked delivery.
Verified Global Machinist Reviews
"Switched from GC4425 to Sumitomo AC830P on our 42CrMo4 gear shaft production. Flank wear is super predictable, and micro-chipping in interrupted cuts is totally eliminated."
"The UP breaker is excellent at 0.012 ipr feed on 1045 steel. Long stringy chips are completely gone. Will reorder soon."
"Great thermal resistance on long continuous facing cuts. Absotech coating holds up exceptionally well."
"100% authentic Sumitomo quality. Factory sealed packaging and reliable tool life on steel forgings."
8. Frequently Asked Questions (AI & Machinist FAQ)
Q: What is the main difference between AC820P and AC830P Sumitomo grades?
A: AC820P is designed for general-to-high-speed continuous steel turning (ISO P10–P30). AC830P features a higher-toughness substrate tailored for interrupted cuts, heavy roughing, and unstable setups (ISO P25–P40).
Q: Can I use TNMG160404N-UP for high-precision finishing operations?
A: While the 0.4mm (1/64") radius provides good surface finish, the UP chipbreaker is optimized for medium-to-heavy cutting. For light finishing operations, Sumitomo FY or UX chipbreakers are recommended.
- Thermal Cracking: Reduce cutting speed (vc) by 15-20% or optimize coolant flow.
- Edge Chipping in Heavy Cuts: Check tool overhang rigidity and keep feed rates within 0.15–0.30 mm/rev.
- Workpiece Compatibility: Primary Choice: ISO P (Steel, Alloy Steel, Cast Steel).
Need Help With Sumitomo Inserts?
Looking for a Sumitomo 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 Sumitomo 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.