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  • ASTM T2 High Speed Steel (UNS T12002)
  • ASTM T2 High Speed Steel (UNS T12002)

ASTM T2 High Speed Steel (UNS T12002)

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Specification, Chemical & Mechanical Performance

ASTM/AISI T2 high speed steel is a Tungsten High Speed Steel grade Tool Steel in specification of ASTM A600. ASTM A600 standard covers tungsten-type and molybdenum-type high-speed steels used primarily in the fabrication of tools. There are seven types of tungsten high-speed tool steels designated T1, T2, T4, T5, T6, T8 and T15 etc.


AISI T2 high speed steel is an air-hardening medium alloy tool steel that has wear resistance intermediate between the high carbon chromium tool steels and oil hardening tool steels. But it offers good toughness and exhibits minimal distortion on hardening.


1.AISI T2 High Speed Steel Supply Range

T2 Steel Round Bar: diameter 2mm – 800mm

T2 Steel Flat: thickness 2-20mm x width 10-100mm

T2 Tool Steel Plate: thickness 2-200mm x width 200-610mm

Surface Finish: Black, Rough Machined, Turned or as per given requirements.


2.Standard of AISI T2 High Speed Steel

Country USA
Standard ASTM A600
Grades T2 / T12002


3.AISI T2 High Speed Steel Chemical Composition Properties

ASTM A600 C Mn P S Si Cr V Mo W Co
T2 0.80 0.90 0.20 0.40 0.03 0.03 0.20 0.40 3.75 4.50 1.80 2.40 1.00 17.50 19.00


4.AISI T2 High Speed Steel Mechanical Properties

  • T2 Tool Steel Physical Properties
Properties Metric Imperial
Density 7.86 g/cm3 0.284 lb/in3
  • Mechanical Properties of T2 HSS Tool Steel 
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
339 (≥) 619 (≥) 11 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
  • Thermal Properties of T2 Tool Steel
Properties Metric Imperial
Thermal expansion co-efficient (@20-260°C/68-500°F) 10.6 µm/m°C 5.89 µin/in°F


5.Forging of ASTM T2 High Speed Steel

Soak AISI T2 tool steel for 1 hour at 2150 F (1177℃) prior to forging.

Do not work below 1850 F (1010℃). Post-work solution treatment is required prior to final hardening.


6.ASTM T2 High Speed Steel Heat Treatment

Annealing hardness
Cold pull hardness
Preheating temperature
Quenching temperature
Holding time
Hardening medium Temper temperature
After tempering hardness
salt-bath furnace controlled atmosphere furnace
235 262 788 1191 1204 5~15 air cooling 522 60


7.Applications of ASTM/AISI T2 High Speed Steel

AISI T2 high speed steel are mainly used in high speed tool and cutting applications such as drills, milling processes, reamers, etc. Some typical applications of T2 tool steel are as below:

  • Turning and slotting tools
  • Broaching tools
  • Reamers
  • Threading dies
  • Twist drills
  • Tapes

Besides of AISI T2 HSS tool steel materials, we are capable of supply AISI T1 Tool Steel for your high speed cutting purpose. You are welcome to send us requests anytime for the ASTM T2 high speed steel price. We are a better choice. Please leave a comment if there are any questions.