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China, Chinese T4 High Speed Tool Steel (T4, 1.3255, S 18-1-2-5, SKH3)1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Steel ProductsSpecial Steel1.3255S 18-1-2-5SKH3)Tool SteelSpecial Steel
Shanghai Bozhong Metal Group Co., Ltd.
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Product Description Products DetailsT4 High Speed Tool Steel (T4, 1.3255, S 18-1-2-5, SKH3)T4 Steel Round Bar: diameter 2mm - 200mmT4 Steels Flat: thickness 2-20mm x width 10-100mmT4 Steel Plate: thickness 2-200mm x width 200-810mmSurface Finish: Black, Rough Machined, Turned or as per given requirements.2.Relevant Steel Specifications of AISI T4 High Speed Tool SteelsCountryUSAGermanJapanStandardASTM A600DIN EN ISO 4957JIS G4403GradesT4/T12004S 18-1-2-5/1.3255SKH33.AISI T4 Tool Steel and Equivalents' Chemical CompositionASTM A600CMnPSSiCrVWMoCo T40.700.800.100.400.030.030.200.403.754.500.801.2017.5019.000.401.004.255.75DIN ISO 4957CMnPSSiCrVWMoCo S 18-1-2-5/1.32550.750.83…0.400.030.03…0.453.804.500.801.2017.5018.500.500.804.505.50JIS G4403CMnPSSiCrVWMoCo SKH30.730.83…0.400.030.03…0.453.804.500.801.2017.0019.00……4.505.504.High Speed Steel T4 Tool Steel Mechanical PropertiesPhysical Properties of High Speed T4 Tool SteelsPhysical properties (average values) at ambient temperatureModulus of elasticity [103 x N/mm2]: 217Density [g/cm3]: 8.70Thermal conductivity [W/m.K]: 19.0Electric resistivity [Ohm mm2/m]: 0.65Specific heat capacity[J/g.K]: 0.46Mechanical Properties of T-4 SteelPropertiesMetricImperialModulus of elasticity190-210 GPa27557-30458 ksiPoisson's ratio0.27-0.300.27-0.30Thermal Properties of T4 Tool SteelsPropertiesMetricImperialThermal expansion co-efficient11.9 μm/m°C6.6 μin/in°F 5.Forging of ASTM T4 Tool Steel MaterialsForging of T4 steel can be carried out from 850 to 1120°C (1775 to 2100°F).Preheat T4 steel material uniformly and slowly to 860-880°C.Increase the forging temperature up to 1050-1120°C.T4 hss tool steel should be cooled very slowly after forging.6.AISI/ASTM T4 Tool Steel Heat Treatment and PropertiesHardeningHarden 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.AnnealingT4 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.TemperingTempering temperature: 2x 560-580oC. Hardness after tempering is 64-65 HRC.7.Applications of ASTM/AISI T4 Tool SteelAISI T4 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 punchesBroaches etc.
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