A GF/GFX cutting set is a machine-specific combination of saw blades and bevel cutters used for tube end preparation. The parts must work as one matched system. They should not be selected or replaced by outer diameter alone.

Why The Complete Set Must Be Matched

The saw blade performs the cut while the bevel cutter prepares the required tube end geometry. Stable operation depends on the dimensional relationship between the parts, their installation sequence and the machine interface.

Important: bore size, pin-hole layout, rotation direction, blade sequence, bevel angle, bevel width and machine clearance must be confirmed together. A cutter that looks similar may still be unsuitable for the machine.

Information Needed For A Reliable Quotation

  • Equipment manufacturer and machine model
  • Original drawing, old cutter set or clear sample photos
  • Outer diameter, thickness, bore, pin holes and PCD
  • Tooth count, tooth form and rotation direction
  • Required bevel angle, bevel width and finished tube-end profile
  • Workpiece material, tube outside diameter and wall thickness
  • Current cutting problem, expected quality and order quantity

Old cutter photos can support a preliminary quotation when the printed markings and machine interface are visible. A drawing or physical sample is recommended before final production.

Typical Material Composition Reference

The table below compares three practical material options used in GF saw blade discussions. Values are typical chemical composition by mass percent, not a substitute for the final material certificate or an agreed purchasing standard.

Material C Si Mn Cr Mo V W Co
M2 0.90 0.25 0.30 4.10 5.00 1.80 5.40 –
M2+2Co 0.90 0.40 0.30 4.10 5.00 1.90 6.40 2.01
M35 0.90 0.40 0.30 4.10 5.00 1.90 6.40 4.80

How To Choose M2, M2+2Co Or M35

M2: Real production experience confirms that M2 can be used for GF saw blades. It is a practical choice when the application, expected blade life and budget are suitable.

M2+2Co: This grade adds about 2% cobalt and can be positioned between M2 and M35 when the buyer needs a balance of price and cutting performance.

M35: Higher cobalt content can support more demanding heat and wear conditions, but it is not automatically necessary for every GF application. The cutting material, machine stability and commercial target should be evaluated together.

Do Not Confuse Local “M42” With International M42

Some Chinese factories use “M42” as a local shorthand for M2+2Co. This is not the same as international-standard M42. For export quotations, purchase orders and certificates, write M2+2Co and confirm the agreed chemical composition or material certificate.

FAQ

Can M2 be used for GF saw blades?

Yes. Practical production experience confirms that M2 can be used when the cutting scenario, expected life and budget are appropriate.

How should buyers choose between M2, M2+2Co and M35?

Choose the grade together with the workpiece, cutting load, heat, expected blade life and budget. M35 is not automatically the best commercial choice for every application.

Is the Chinese factory name M42 the same as international M42?

Not always. Some factories use M42 as shorthand for M2+2Co. Export documents should state M2+2Co and confirm the composition.

Why are the machine model and drawing needed?

The complete GF/GFX set must match the machine interface, blade sequence, bore, pin holes, rotation, bevel angle and dimensional relationship.

Can an old cutter set or photos be used for quotation?

They can support a preliminary quotation if all markings and interfaces are visible, but a drawing or sample is recommended before final production.