HSS 1.3255 steel ,T4 tool steel  | 1.3255 high speed steel | SKH3 | W18Cr4VCo5 | HS18-1-1-5 / SS 2754

HSS 1.3255 steel is Tungsten series high speed steel,ASTM T4 tool steel is similar to T1 tool steel materials, but with 4.25~5.75% cobalt added to increase heat resistance. The red hardness of T4 steel and the high temperature hardness is a little higher than T1 tool steel. AISI T4 tool steel is a deep hardening alloy capable of Rockwell C 64 hardness. Otai Special Steel is a 1.3255 steel chinese main supplier , stockist and wholesalers.

Supply Form of ASTM T4 Tool Steel -W-Nr. HSS 1.3255  High Speed Steel

1.W-Nr. HSS 1.3255  steel Supply Range

HSS 1.3255   Steel Round Bar: diameter 2mm – 200mm
HSS 1.3255   Steels Flat: thickness 2-20mm x width 10-100mm
HSS 1.3255   : thickness 2-200mm x width 200-810mm
HSS 1.3255   : Black, Rough Machined, Turned or as per given requirements.

m2 tool steel -astm-high-speed-steel

2.Relevant Steel Specifications of HSS 1.3255   High Speed Tool Steels

Country USA German Japan
Standard ASTM A600 DIN EN ISO 4957 JIS G4403
Grades T4/T12004 S 18-1-2-5/1.3255 SKH3

3. HSS 1.3255   and Equivalents’ Chemical Composition

ASTM A600 C Mn P S Si Cr V W Mo Co
T4 0.70 0.80 0.10 0.40 0.03 0.03 0.20 0.40 3.75 4.50 0.80 1.20 17.50 19.00 0.40 1.00 4.25 5.75
DIN ISO 4957 C Mn P S Si Cr V W Mo Co
S 18-1-2-5/1.3255 0.75 0.83 … 0.40 0.03 0.03 … 0.45 3.80 4.50 0.80 1.20 17.50 18.50 0.50 0.80 4.50 5.50
JIS G4403 C Mn P S Si Cr V W Mo Co
SKH3 0.73 0.83 … 0.40 0.03 0.03 … 0.45 3.80 4.50 0.80 1.20 17.00 19.00 … … 4.50 5.50

4.HSS 1.3255 Tool Steel Mechanical Properties

 Physical Properties of HSS 1.3255  

  • Physical properties (average values) at ambient temperature
  • Modulus of elasticity [103 x N/mm2]: 217
  • Density [g/cm3]: 8.70
  • Thermal conductivity [W/m.K]: 19.0
  • Electric resistivity [Ohm mm2/m]: 0.65
  • Specific heat capacity[J/g.K]: 0.46
  • Mechanical Properties of HSS 1.3255  
Properties Metric Imperial
Modulus of elasticity 190-210 GPa 27557-30458 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30

 

Themal properties of HSS 1.3255  

 

Properties Metric Imperial
Thermal expansion co-efficient 11.9 µm/m°C 6.6 µin/in°F

5.HSS 1.3255   Steel Heat Treatment and Properties

  • Hardening

Harden T4 high speed tool steel from a temperature of 1260-1290oC followed by oil, air quenching or warm bath at 550oC. Hardness after quenching is 63-66 HRC.

  • Annealing

T4 steel should be annealed after hot working. Increase the temperature of T4 high speed steel to 860°C(Max220°C per hour). Hold at the temperature and then cool slowly with the furnace. The annealed hardness achieved should be below HB255.

  • Tempering

Tempering temperature: 2x 560-580oC. Hardness after tempering is 64-65 HRC.

6.Applications of HSS 1.3255   High speed Steel

HSS 1.3255    high speed tool steels are widely used as cutting tools, broaches and cold extrusion punches, turning, planing and milling cutters for roughing work.

Typical applications are:

  • Drills,
  • Milling Cutters,
  • Thread Cutting Tools,
  • Knurling Tools,
  • Cold extrusion punches
  • Broaches etc.

Besides of HSS 1.3255   high speed tool steel materials, we are also capable of supplying T1 high speed steel, T10 tool steels, T15 tool steel etc. Just contact us for more details and latest price offer. If you have any questions, also leave a comment below.

If you have any HSS 1.3255   High speed steel inquiry and question for Price, Application, hot treatment, Please don’t hesitate to contact us.

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