T15 High Speed Steel

bright surface T5 high speed steel bar

The T15 High Speed Steel is ?air or oil hardening tool steel that has exceptional wear resistance. It resists softening at high operating temperatures. ?Otai special steel is T15 steel stockholders and suppliers in china. we supply different?specification T15 HSS round bar, plate, flat bar material.

Related Specifications ASTM A600-1999

?T15 HSS Steel Chemical composition

C(%) 1.50~1.60 Si(%) 0.15~0.40 Mn(%) 0.10~0.40
P(%) ≤0.030 S(%) ≤0.030 Cr(%) 3.75~5.00
W(%) 11.75~13.0 V(%) 4.50~5.25 ?Mo ?≤1.00
Co(%) ?4.75~5.25

Form of Supply

T15 high speed steel, we can supply the?round bar, flat bar, plate and square block. Diameters can be sawn to your required lengths as one offs or multiple cut pieces. Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.


Typical tools in the application of T15 high speed steel good at including high-performance reamer, form tools, milling cutter, end milling, taps, reamers. ?T15 high speed steel can be any cutting?application on strong or abrasive materials that generate high cutting tool temperatures.

Regular size and Tolerance

T15 steel round bar: ?Diameter 2mm -200mm

T15 Steel plate: Thickness 2mm-300mm ?x Width 100mm-810mm X length

T15 HSS Flat bar: ?thickness 2mm-50mm x Width 10mm – 200mm

Others have not specified size, pls contact our?experienced sales team.

T15 high speed steel Equivalents and ?tool steel?Chemical composition

ASTM A600 C Si Mn Cr Mo P S V W Co
T15 1.50~1.60 0.15~0.40 0.15~0.40 3.75~5.00 ≤1.00 ≤0.030 ≤0.030 4.50~5.25 11.75~13.0 4.75~5.25
DIN W-Nr C Si Mn Cr Mo P S V W Co
1.3202 1.30~1.45 ≤0.45 ≤0.40 3.80~4.50 0.70~1.00 ≤0.030 ≤0.030 3.50~4.00 11.50~12.50 4.50~5.00
GB/T C Si Mn Cr Mo P S V W Co
W12Cr4V5Co5 1.50~1.60 0.15~0.40 0.15~0.40 3.75~5.00 <1.00 ≤0.030 ≤0.030 4.50~5.25 11.75~13.00 4.75~5.25
BS C Si Mn Cr Mo P S V W Co
BT15 1.40~1.60 ≤0.40 ≤0.40 4.25~5.00 ≤1.00 ≤0.030 ≤0.030 4.75~5.25 12.0~13.0 4.50~5.50
JIS C Si Mn Cr Mo P S V W Co
SKH10 1.45~1.60 ≤0.45 ≤0.40 3.80~4.50 ≤0.030 ≤0.030 4.20~5.20 11.50~13.50 4.20~5.20

T15 Tool Steel HSS steel Forging

Heat to forging?temperature, ensure forged ratio greater than 5:1.

T15?HSS Steel heat treatment

Heat treatment include annealing,?normalizing,?Quenching, Tempering, Nitriding , etc.

T15 High speed steel?Annealing?HSS

  • Hardness HBS | annealing: 277

T15 steel Cold drawn round bar

  • Hardness HBS | cold drawn: 293
  • The hardness of HBS| after cold drawing annealing: 285

T15 high speed tool steel?quenching

  • Quenching temperature: 1277 C / | salt bath furnace
  • Quenching temperature / temperature of controllable atmosphere furnace: 1288

Tempering of T15 steel plate

  • Tempering temperature / C: 538
  • The hardness is larger than HRC: 65



T15 High Speed steel round bar and flat sections can be cut to your required sizes. T15 High Speed ground steel bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. T15 High Speed steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.


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