Seco Tools Cutting Tools — Complete Product Guide

Compiled 2026-04-19 · manufacturer catalog + 4man product DB · seco · seco-tools · insert · turning · milling · drilling

Summary

Seco Tools is a Swedish cutting-tool manufacturer headquartered in Fagersta, Sweden, about two hours northwest of Stockholm. Founded in 1932, acquired by Sandvik Group in 2012, but still runs as a distinct brand with its own product catalog, grade system, and distribution network. Seco sits alongside Sandvik Coromant and Walter as Sandvik Group's three main cutting-tool brands — each intentionally kept separate to avoid cannibalizing sales and to target different buyer profiles.

Seco's identity is built around two things: Duratomic, their proprietary CVD coating technology, and a reputation for doing well in general engineering shops in Europe — automotive subcontractors, mold and die, and medium-volume production. In North America they're less prominent on distributor shelves than Kennametal or Sandvik Coromant, but they're a genuine tier-one brand with a full catalog. Their solid-carbide end mill line, Jabro, is well-regarded in hard milling and finishing applications. Their Steadyline anti-vibration boring bars compete directly with Sandvik's Silent Tools.

If a machinist tells you they run Seco inserts and love them, it usually means they're cutting a lot of steel and stainless and found the Duratomic grades to be long-lasting and predictable.

What Seco is best for

  • Steel and stainless turning — Duratomic-coated grades (TP2501, MP2050) are the core strength. Chip-breaker geometry selection is broad and well-documented.
  • Hard milling and die/mold work — Jabro JH series solid-carbide end mills are built for hardened steel, 45–65 HRC range. One of the better options in this niche short of single-purpose brands.
  • Medium-volume milling — Minimaster exchangeable-head system gives you modular flexibility without going fully indexable.
  • Long-reach boring — Steadyline anti-vibration bars handle L/D ratios above 4:1 reliably.
  • General engineering production — Seco's catalog covers turning, milling, drilling, threading, and grooving thoroughly. A shop can source almost everything from one Seco contract.

If you're cutting primarily aluminum, or doing high-volume aerospace titanium, Sandvik Coromant or Kennametal usually offer better-optimized product lines. Seco is strongest in the steel-and-stainless general engineering environment.

Brand architecture

Turning inserts

Seco's turning line covers all standard ISO geometries — CNMG, DNMG, WNMG, TNMG, VCMT, and more. Chip-breaker designations use a letter-number suffix system. Their chip-breaker selection is deep, with multiple geometries per grade targeting roughing, medium, and finishing passes at different feed rates. The Duratomic grades are the top tier; below those sit standard CVD and PVD coated grades.

Jabro (solid-carbide end mills)

Jabro is Seco's solid-carbide round tool brand. Several sub-lines:

  • JH series — hard milling. Designed for hardened steels 45–65 HRC. Tight tolerances, corner-radius options, TiAlN-based coatings. These are the tools die-shop machinists ask for by name.
  • JS series — stainless and high-temp alloys. Variable helix, polished flutes for chip evacuation.
  • JM series — general-purpose milling, mild and alloy steels.
  • JA series — aluminum, high-helix, polished.

Jabro competes with Sandvik CoroMill Plura, Kennametal Harvi, and Helical Solutions in the solid-carbide end mill market.

Minimaster (exchangeable-head milling)

A steel body with a swappable solid-carbide head. Sizes from about 10–25mm diameter. The concept is the same as Kennametal KenTIP or Sandvik Corodrill Meister — reduce solid-carbide spend on the shank by replacing only the cutting head. Minimaster heads come in flat-bottom, ball-nose, and toroid profiles. Useful for shops doing repeat finishing operations where a full solid-carbide shank is overkill.

Perfomax (indexable drilling)

Perfomax is Seco's indexable insert drill line. Two inserts per head — a central insert and a peripheral insert with different geometries. Diameter range roughly 20–80mm. Competes with Kennametal KenTIP FS and Sandvik CoroDrill 880. Reasonable choice when hole diameter is large enough that solid-carbide drilling gets expensive.

Steadyline (anti-vibration boring bars)

Steadyline uses a tuned passive damping system inside the bar body — same fundamental idea as Sandvik's Silent Tools. It's designed for L/D ratios beyond 4:1 where chatter becomes the limiting factor. Available in boring, turning, and milling configurations. If your shop is already a Seco shop, use Steadyline before paying Sandvik Silent Tools prices. If you're evaluating both cold, test each in your application — performance is comparable.

Turbo (milling bodies)

Seco's indexable milling insert bodies — square shoulder, high-feed, face milling configurations. The Turbo product family uses Seco's own insert shapes and pockets, so inserts are brand-specific. Grade selection for Turbo bodies uses the same Duratomic and standard grade system as turning.

Grade and coating system

Duratomic (CVD coating)

Duratomic is Seco's flagship coating platform, introduced in the mid-2000s. It's a multi-layer CVD alumina coating where the crystal texture is engineered at the atomic level — similar in concept to Sandvik's Inveio. The claim is higher wear resistance and better thermal stability than standard Al₂O₃ coatings. It's used on Seco's top steel and stainless turning grades. Whether it's meaningfully better than Inveio or Kennametal's KCPB series in practice depends on the application — but it's a legitimate technology, not marketing gloss.

Grade codes

Seco grade codes are alphanumeric with a letter prefix indicating application class:

  • T prefix — steel (ISO P): TP2501 is the current flagship P25 grade for steel turning. Balanced wear resistance and toughness, Duratomic coated. General medium-to-roughing steel turning.
  • M prefix — stainless (ISO M): MP2050 targets austenitic and duplex stainless. PVD-coated for edge sharpness on gummy materials.
  • C prefix — cast iron (ISO K): CP500 is the main cast-iron grade, CVD coated.
  • H prefix — hardened steel: Used in Jabro tooling and specialized turning grades for 45 HRC+.
Grade ISO class Coating type Best application
TP2501 P25 Duratomic CVD Steel turning, medium to rough
MP2050 M25 PVD Stainless turning, medium
CP500 K15–K25 CVD Gray and ductile cast iron
TP0500 P05 Duratomic CVD Steel finishing, light cuts

Starting points for TP2501 on 4140 steel, turning:

  • Surface speed: 600–900 SFM
  • Feed: 0.008–0.014 IPR (roughing)
  • Depth of cut: 0.050–0.180"

Starting points for MP2050 on 304 stainless, turning:

  • Surface speed: 400–600 SFM
  • Feed: 0.005–0.010 IPR
  • Flood coolant strongly recommended

These are starting points. Dial back 10–15% on interrupted cuts and verify against Seco's published application data.

When to use Seco vs. alternatives

  • vs. Sandvik Coromant: Same parent company, different personalities. Sandvik leads on aerospace materials and damped tooling depth. Seco often wins on price for comparable steel and stainless work, and the Jabro JH series is stronger in hard milling than CoroMill Plura.
  • vs. Kennametal: Comparable tier. Kennametal has broader US shelf availability. Seco's Duratomic grades are worth direct testing against KCP25B if you're running a high-volume steel turning job — results vary by machine and operation.
  • vs. Walter: Also Sandvik-owned. Walter's Tiger·tec Silver is their flagship CVD and competes directly with Duratomic. Walter is stronger in drilling; Seco is stronger in solid-carbide end milling.
  • vs. Iscar: Iscar leads on creative chip-breaker geometry and grooving/threading tools. Seco leads on Duratomic coating life in continuous turning.
  • vs. Harvey / Helical: Different scope. Seco's Jabro JH competes with Harvey Tool's hard-milling end mills specifically. For general-purpose solid-carbide end mills, Helical and Jabro JS/JM are direct competitors.

Ask 4man

Seco's grade system is straightforward once you know the T/M/C/H prefix logic, but picking the right chip-breaker geometry takes experience or a lot of catalog reading. Drop your material, operation, and machine details into 4man and it'll match you to a Duratomic grade and geometry, cross-check it against comparable Kennametal or Sandvik grades, and flag if another brand is the better call for your job.