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High Speed Steel Bar / HSS Bar

High speed steel bar provides stock for drills, taps, reamers and other cutting tools. HSS is chosen for its ability to keep a hard cutting edge as heat builds during machining. The bar normally needs shaping, hardening and finishing before use.

The grade affects both tool cost and working life. M2 is a common starting point for general cutting tools. Cobalt-bearing M35 and M42 offer greater resistance to softening at higher temperatures, but their extra cost needs to suit the job.

Dexter Steel supplies HSS bars with cutting and specified processing. For tool manufacturers, suitable blank dimensions reduce waste. The supplied condition and finishing allowance should fit the planned machining and heat-treatment route.

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More Details

HSS bar is bought by manufacturers of drills, taps, reamers and cutters. Its main value is keeping a hard cutting edge as heat builds during use.

At Dexter Steel, we distinguish between stock for making tools and blanks intended for direct grinding. Annealed bar normally needs machining and heat treatment. Hardened blanks require a different specification and production route.

Making that distinction early helps avoid receiving material that adds an unexpected operation to your workshop.

Choose the Grade

GradeMain reason to consider it
M2A practical balance of tool performance and material cost
M35Better resistance to softening under cutting heat than M2
M42Strong heat and wear resistance for more demanding cutting jobs

The workpiece and cutting conditions matter more than the grade ranking alone. Paying for more cobalt brings little value if M2 already delivers an acceptable tool life.

For repeat production, compare material cost with sharpening frequency, tool changes and rejected parts.

Supply That Fits Your Tool Production

Bar diameter, straightness and surface condition affect how much work remains before the tool is finished. Oversized stock adds removal time and scrap.

We can quote cut lengths and review other processing from your drawing. The blank still needs suitable allowance for heat treatment and final grinding, particularly on cutting edges and shanks that require close dimensions.