Built to be interrupted
TP3502 brings next‑level stability and predictable tool life at moderate and high cutting speeds. Discover how this Duratomic® grade transforms steel machining.TP3502 is the new CVD coated Duratomic® grade for lathes, purpose‑built for demanding ISO P materials and mixed conditions. It delivers long, predictable tool life, reliable performance and broad application coverage in a single ISO turning insert to keep your steel turning processes stable, efficient and competitive.
Push cutting data in tough steel turning
TP3502 is designed for the real world of steel machining where materials vary, geometries are complex and interruptions are standard. The Duratomic® grade with CVD coating and robust carbide substrate give you a balanced combination of wear resistance and toughness, so you can really push cutting data without sacrificing reliability. In P35‑type applications and across the ISO P range, the grade is engineered to perform, and compete, against today’s market‑leading CVD inserts.
Your challenge: Turning steel components often means compromising. You either slow down to avoid chipping, or you push harder and risk unpredictable insert failure, scrap and unplanned stops.
Our solution: TP3502 gives you high‑performance turning in ISO‑P steels with a much higher “lowest level” of tool life, even in tough conditions. The grade stays reliable under varying hardness, interrupted cuts and changing conditions so you maintain output and part quality instead of constantly monitoring and reacting to deviations.
Supporting your plan for a predictable turning process
At the core of the Duratomic® TP3502 grade is a new CVD coating concept combined with improved edge preparation. This pairing delivers significant tool‑life gains over the TP3501 predecessor while keeping cutting forces under control. The result is a more predictable wear pattern that simplifies tool‑life planning and allows you to optimize cutting data with smaller safety margins, unlocking higher productivity without sacrificing security.
Your challenge: Many steel turning set-ups experience failure earlier than expected, especially in tougher sections of the workpiece, forcing you to accommodate large safety margins in your cutting data and tool‑change intervals. This limits productivity and makes cost‑per‑part hard to control.
Our solution: TP3502 is developed specifically to increase average tool life without losing security. With robust wear resistance in the ISO P35 window, you can run higher cutting speeds or longer cuts between indexing and still trust the insert to behave as expected. That predictability helps you plan tool changes around your process – not the other way around – and reduce cost per component.
One grade for all your applications
TP3502 is your new “go‑to” grade for general ISO‑P steel turning. It covers a broad application window, from low-carbon to high-alloy, high-carbon steels (SMG P2-P7) through to various stainless steels and ductile irons (SMG K3-K5) as well as powder-metal components (SMG PM1). This versatility, combined with trustworthy cutting data recommendations, gives you wide freedom to standardize on one grade for a large share of your steel turning operations while still meeting local requirements and customer quality demands.
Typical components include: drive and axle shafts, transmission gears, differential housings, planetary gears, synchronizing rings, pistons, flanges, rings, pulleys and bimetal weldments – all areas where interruptions, variable cross‑sections and mixed conditions demand a tough yet productive grade.
Your challenge: Many shops rely on several different grades to cover steels, tougher features and occasional stainless or cast iron. This creates complexity in tooling inventories, set-up time and programming – and still doesn’t always guarantee a secure performance in more demanding areas.
Our solution: TP3502 minimizes complexity by offering a single Duratomic® grade that works across a wide spectrum of steel materials and related workpiece groups. With one ISO turning insert family, you can reduce your stock, simplify tool selection, and still achieve dependable performance in shoulder turning, copy turning, intermittent cuts and varying engagement conditions.
Smart features for edge use, quality and sustainability
Chrome used edge detection helps operators see which cutting edges have been used while the Data Matrix Code traces the insert, supporting digital tracking. The grade is produced using recycled powders, and Seco supports buy‑back and recycling of worn inserts. This combination lets you take a more data‑driven and sustainable approach to your turning operations.
Your challenge: In busy workshops, it’s easy to lose track of insert edges, scrap usable tooling and lack visibility of the true environmental impact of your turning processes. That adds hidden costs and makes it harder to meet internal or customer sustainability targets.
Our solution: With used edge detection, the Data Matrix Code and a structured recycling and buy‑back concept, TP3502 helps you use every edge and close the loop on your carbide consumption. You gain clearer edge‑use control on the shop floor and better data for sustainability reporting – all while using a premium CVD insert that supports your productivity and quality goals in ISO‑P steel turning.
Application areas
Primary area: The most demanding steel‑turning operations, especially components with interrupted cuts, from roughing to finishing.
Secondary areas: Well suited for a broad range of stainless steels, from austenitic and ferritic to martensitic, and delivers strong performance in many ductile irons and powder‑metal components as well.
Typical operations: External and internal turning, shoulder turning, copy turning and operations with interrupted cuts and/or varying time in engagement.
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