For HSS circular saw blades, tooth count is often selected by looking at tube wall thickness together with blade diameter. Thin-wall tube usually needs a finer pitch and more teeth. Thicker-wall tube usually needs more chip space and fewer teeth.
This page is a factory-style reference table guide. For the broader selection logic behind tooth count, feed, material and cutting speed, see our HSS tooth count selection logic guide.
This table is a starting reference, not a final production rule. Machine rigidity, clamping, coolant, material grade, tube shape and burr requirement can change the final tooth count.
How To Read The HSS Tooth Count Table
Start from the tube wall thickness, then check the blade diameter column. If the workpiece is thin-wall stainless steel tube, a finer pitch is often safer. If the workpiece is thicker carbon steel tube, chip space becomes more important.
| Tube wall thickness | 250mm blade | 275mm blade | 300mm blade | 325mm blade | 350mm blade |
|---|---|---|---|---|---|
| 0.6mm | 280T | 280T | 320T | 320T | 350T |
| 0.8mm | 240T | 280T | 320T | 320T | 350T |
| 1.0mm | 220T | 240T | 280T | 280T | 320T |
| 1.2mm | 200T | 220T | 240T | 240T | 280T |
| 1.5mm | 180T | 200T | 220T | 240T | 240T |
| 1.6mm | 180T | 200T | 200T | 220T | 240T |
| 2.0mm | 150T | 180T | 200T | 220T | 220T |
| 2.5mm | 160T | 180T | 200T | 220T | 220T |
| 3.0mm | 120T | 150T | 180T | 200T | 220T |
Cutting Speed And Feed Per Tooth Must Still Match
A tooth count table is only one part of the selection. The same HSS blade may cut well or fail quickly depending on spindle speed, feed per tooth, lubrication and machine stability.
| Cutting material | Reference cutting speed | Reference feed per tooth |
|---|---|---|
| Low carbon steel <500N/mm2 | 30-50 m/min | 0.03-0.05 mm |
| Medium carbon steel <800N/mm2 | 20-40 m/min | 0.03-0.04 mm |
| High carbon steel <1200N/mm2 | 15-25 m/min | 0.02-0.03 mm |
| Stainless steel | 10-30 m/min | 0.01-0.03 mm |
| Cast iron | 30-50 m/min | 0.04-0.05 mm |
| Aluminum or copper alloy bar | 600-900 m/min | 0.04-0.09 mm |
| Aluminum or copper alloy profile | 1000-1600 m/min | 0.03-0.07 mm |
| Bronze or red copper | 200-300 m/min | 0.04-0.06 mm |
| Brass | 400-600 m/min | 0.04-0.08 mm |
| Synthetic material | 60-150 m/min | 0.04-0.08 mm |
RPM = cutting speed x 1000 / (blade diameter x 3.14). For example, a 300mm HSS blade cutting medium carbon steel at 30 m/min is about 32 rpm.
Can We Quote From An Old HSS Saw Blade Photo?
In many cases, yes. If the customer wants to repeat the old specification, photos can be very helpful. But the photo must clearly show the printed blade size information on the old blade.
The most useful photo is not only a full blade photo. It should also show the marking area clearly, including outer diameter, thickness, bore size, tooth count, material grade, coating or any special factory code. If the marking is blurred or missing, we still need the tube material, tube wall thickness, machine model and current cutting problem.
What Buyers Should Send For A Faster Quotation
- HSS blade size: outer diameter x thickness x bore x tooth count
- Clear photo of the printed blade marking if it is a repeat order
- Tube outer diameter, wall thickness and material grade
- Machine model, spindle speed range and feed method
- Coolant or lubrication method
- Current cutting issue, such as burr, vibration, heating, short blade life or tooth breakage
Common Misunderstandings
More teeth are not always better
More teeth can help thin-wall tube cutting, but thick sections need chip space. If the pitch is too fine, chips cannot leave smoothly and the blade may overheat.
HSS blade size format is different from TCT and cermet
HSS and GF blades are usually solid HSS material blades without welded tips, so they are commonly written as outer diameter x thickness x bore x teeth. TCT and cermet blades usually separate kerf and plate thickness, for example 285 x 2.0/1.75 x 32 x 80T.
Old blade photos need markings, not only appearance
A photo of the tooth edge or blade surface can show wear, coating and tooth shape, but it does not always confirm the exact specification. Printed size information is still the safest reference for repeat quotation.
FAQ
What tooth count should I use for a 300mm HSS blade cutting 1.0mm tube?
As a starting reference, 280T is often used for 300mm HSS circular saw blades cutting around 1.0mm tube wall. Final selection should still consider material, machine condition and burr requirement.
Why does thin-wall tube usually need a finer pitch?
Thin-wall tube has a smaller cutting section and is easier to deform or vibrate. A finer pitch allows more teeth to share the load and can reduce impact during entry.
Can Yansam quote from old blade photos?
Usually yes if the printed blade marking is visible. Please send clear photos of the full blade and the marking area, plus tube material and wall thickness.
Is this table suitable for every HSS circular saw machine?
No. It is a practical reference. Machine rigidity, clamping, coolant, material grade and feed setting should be checked before final production.
Bottom Line
The HSS tooth count table is useful for quickly narrowing the selection, especially when the buyer already knows tube wall thickness and blade diameter. But a reliable quotation still needs the complete blade size, material, machine condition and cutting target.
If you have an old blade photo or a tube cutting problem, send the printed blade marking and workpiece information through our technical inquiry page. We can help check whether the tooth count is suitable before production.