Klingspor® A346EX Cutting Disc

Klingspor A346EX cutting disc: performance and safety for metal

The Klingspor A346EX cutting disc is a metal-cutting tool designed for heavy-duty use. Whether for steel, stainless steel, profiles, or tubes, it delivers clean cuts, generates little heat, and offers a long service life.

It belongs to Klingspor's Kronenflex Extra range, a step above the standard, featuring premium-quality aluminum oxide abrasive and a double-reinforced fiberglass web.

At Dagobert Industrie, we offer it in several diameters to fit your angle grinder or stationary chop saw.

Overview of the Klingspor A346EX cutting disc

The Klingspor A346EX cutting disc is part of the Kronenflex range, the line of high-end abrasive discs from German manufacturer Klingspor.

It is designed for cutting metal: steel, stainless steel, profiles, tubes, and solid bars. A versatile tool for professionals who need to cut often and fast.

Kronenflex A 346 Extra: the Extra performance class from Klingspor

At Klingspor, the Kronenflex range is divided into several performance classes. The Extra designation positions this disc above the standard series.

In practical terms, this means a higher-quality abrasive grain, a more durable bond, and a longer service life compared to entry-level discs.

The result: fewer discs consumed per project, a cleaner cut, and less burring to clean up.

Product	Manufacturer	Class	Target materials	Key strength
A346EX (Kronenflex Extra)	Klingspor	Extra	Steel, stainless steel	Longevity and clean cutting
A24 Extra (Kronenflex)	Klingspor	Extra	General steel	High cutting aggressiveness
Inox A60 W (Kronenflex)	Klingspor	Stainless special	Stainless steel only	No ferrous contamination
Flexovit Ultra-Thin	Flexovit	Premium	Steel, stainless steel	Very thin disc, fast cutting
Norton Quantum	Norton	Premium	Steel, stainless, aluminum	Multi-material versatility

The A346EX stands out for its balance between cutting aggressiveness and durability, where some competitors prioritize one over the other.

Technical features and specifications of the Klingspor A346EX

The Klingspor A346EX is a cutting disc designed for metal and stainless steel. It belongs to Klingspor's Expert range, intended for intensive use in workshops or on job sites.

Its composition is based on a special aluminum oxide abrasive, selected for its resistance to heat buildup. Result: fewer burrs and less discoloration on stainless steel.

The disc is reinforced with a double fiberglass web. This structure ensures high mechanical strength, even in cases of accidental lateral stress.

It complies with EN 12413 standards and bears the oSa / MPA mark, attesting to a safety level verified by an independent organization.

Here are the main specifications:

• Machinable materials: steel, stainless steel, ferrous metals
• Binder: reinforced synthetic resin
• Thickness: 1.0 to 2.5 mm depending on diameter
• Available diameters: 115 mm to 230 mm
• Maximum speed: up to 80 m/s
• Standard: EN 12413, oSa marked

Product	Manufacturer	Materials	Typical thickness	Key strength
A346EX	Klingspor	Steel, stainless steel	1.0-2.5 mm	Low heat buildup, heavy-duty use
A24EX	Klingspor	Steel	2.5-3.2 mm	Fast cutting on thick steel
Kronenflex A 60 W	Pferd	Steel, stainless steel	1.0-2.0 mm	Thin disc, fine finish
Cubitron II 66623396380	3M	Steel, stainless steel	1.0 mm	Ceramic grain, max cutting speed

Applications: which materials and which machines for the A346EX?

The Klingspor A346EX is designed for cutting ferrous metals: carbon steel, stainless steel, profiles, tubes, and flat bars.

Its special aluminum oxide abrasive allows it to handle thick-walled pieces without excessive heat. It remains effective on hard steels where a standard disc quickly loses efficiency.

It is not suitable for cutting aluminum, soft non-ferrous materials, or stone. Other Klingspor references exist for these applications.

Compatibility with chop saws and angle grinders

The A346EX is used on two types of machines:

• Angle grinder (small and large models): spot cutting, workshop or job site work
• Stationary chop saw: repetitive cutting, series production on profiles

Always verify that the maximum machine speed is lower than or equal to the speed marked on the disc. This is a non-negotiable safety rule.

The table below compares the A346EX to other common cutting discs:

Disc	Manufacturer	Target materials	Typical thickness	Key strength
A346EX	Klingspor	Steel, stainless steel	2.5-3 mm	High service life, low heat buildup
A60 Extra	Klingspor	Mild steel	3 mm	Entry-level value for money
Flexovit Metal	Flexovit	Steel	3 mm	Wide availability, general use
Norton Quantum	Norton	Steel, stainless steel	2-2.5 mm	Thin disc, fast cutting

Comparison: Klingspor A346EX vs. other metal cutting discs

The metal cutting disc market is crowded. To help you choose, here is how the Klingspor A346EX positions itself against its main competitors.

Product	Manufacturer	Thickness	Compatible materials	Key strength
A346EX	Klingspor	1.0-1.6 mm	Steel, stainless, metal	High cutting speed, low heat
A60EX	Klingspor	1.6-2.0 mm	Steel, metal	Reinforced longevity, intensive use
Kronenflex A46 TZ	Klingspor	2.0-3.0 mm	Steel, cast iron	Impact resistance, thick profiles
Flexovit Ultra-Thin	Flexovit	1.0-1.6 mm	Steel, stainless steel	Accessible price, occasional use
Norton Quantum	Norton	1.6-2.0 mm	Steel, stainless, alloys	Versatility, ceramic grain

The A346EX stands out for its reduced thickness (as low as 1.0 mm). Less material removed, less heat generated: the workpiece remains intact and the cut is clean.

Compared to the Flexovit Ultra-Thin, the Klingspor holds up well regarding service life. In intensive professional use, it wears down less quickly and maintains its cutting precision for longer.

The Norton Quantum relies on ceramic grain for hard alloys. The A346EX focuses on execution speed on standard steel and stainless steel, a concrete advantage on the job site.

Within the Klingspor range, the A60EX and Kronenflex A46 TZ are better suited for thick profiles or heavy-duty work. For fine, repetitive cutting, the A346EX remains the logical choice.

Usage tips and safety best practices

The Klingspor A346EX cutting disc is designed for cutting metal. Used correctly, it lasts longer and works better.

Always verify that the maximum grinder speed is compatible with the one indicated on the disc. Exceeding this limit exposes you to the risk of the disc shattering.

Mount the disc perpendicular to the workpiece. A cutting angle that is too closed generates lateral stress that weakens the disc and degrades the cut.

Do not force it. Let the disc advance at its own pace. Pressing down hard heats the piece, wears the disc prematurely, and increases the risk of breakage.

Always equip yourself: safety glasses, cut-resistant gloves, a face shield, and clothing resistant to spark splatter.

Some rules not to neglect:

• Never use a chipped or cracked disc
• Never grind with the flat side of a cutting disc
• Always secure the workpiece before cutting
• Allow the disc to slow down completely before setting it down
• Store discs away from humidity and shocks

For series cutting, let the disc cool down between passes. Repeated overheating weakens the binder and reduces service life.

FAQ - Klingspor A346EX cutting disc

1. Which materials is the A346EX disc suitable for?

The Klingspor A346EX is designed for cutting steel and ferrous metals. It is also suitable for tubes, profiles, and solid bars commonly worked on in workshops or on job sites.

2. What is the difference between the A346EX and a standard disc?

The A346EX belongs to Klingspor's Expert range. Compared to an entry-level disc, it offers a longer service life and a cleaner cut, thanks to an optimized abrasive formulation.

In practice, it heats the workpiece less and wears down slower. This is a real advantage for repetitive work.

3. Is this disc compatible with all angle grinders?

It mounts on standard angle grinders equipped with an M14 threaded spindle. Simply verify that the disc diameter matches your machine size (115 mm, 125 mm, or 230 mm depending on the chosen reference).

The maximum speed indicated on the disc must never be exceeded. This is a fundamental safety rule.

4. Can the A346EX be used for grinding, not just cutting?

No. A cutting disc is not intended for lateral grinding. Using the A346EX by applying pressure on the side exposes you to a risk of the disc breaking. For grinding, Klingspor offers dedicated discs like the A24 Extra range.

5. What is the service life of an A346EX disc?

It depends on the material being cut, the pressure applied, and the machine used. On standard steel, an experienced operator can make dozens of clean cuts before complete wear.

At Dagobert Industrie, we recommend never forcing the disc: letting the abrasive do the work significantly extends its service life.

6. How should Klingspor A346EX cutting discs be stored?

Keep them away from humidity, stored flat or on a suitable vertical rack. A poorly stored disc can crack or lose its binding properties, creating a risk of failure during use.

Also, respect the expiration date indicated on the label: binders degrade over time.