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T8-T10A hot rolled steel round bars
T8-T10A hot rolled steel round bars
T8-T10A hot rolled steel round bars
T8-T10A hot rolled steel round bars

T8-T10A hot rolled steel round bars

T8, T10 and T12 are carbon tool steels. They are very hard. The Brinell hardness in annealed state is more than 300.Manual saw blade is T12 material, just quenching, hardness is greater.10 and 20 are low carbon, high quality structural steel, very soft, Brinell hardness is less than 155.Therefore, the fitter saw, laborious, the saw is very easy to wear.
T8-T10A hot rolled steel round bars information

Tool steels are high quality steels developed with controlled chemical composition to form properties essential for working and shaping of other materials. They are normally delivered to the suppliers in the soft annealed condition, which makes it easy for the manufacturer to machine the material with cutting tool for different applications.AISI T8 tool steel is a tungsten-cobalt-vanadium high-speed tool steel. The following datasheet will provide an overview of grade T8 tool steels.
 

Chemical and Mechanical

Chemical Composition

The chemical composition of T8 tool steels is outlined in the following table.

Element Content (%)
Tungsten, W 13.25-14.75
Cobalt, Co 4.25-5.75
Chromium, Cr 3.75-4.5
Vanadium, V 1.80-2.40
Carbon, C 0.75-0.85
Molybdenum, Mo 0.4-1
Nickel, Ni 0.3
Copper, Cu 0.25
Manganese, Mn 0.2-0.4
Silicon, Si 0.2-0.4
Phosphorus, P 0.03
Sulfur, S 0.03

Physical Properties

The following table shows the physical properties of T8 tool steels.

Properties Metric Imperial
Density 8.43 g/cm3 0.267 lb/in3

Mechanical Properties

The mechanical properties of T8 tool steels are displayed in the following table.

Properties Metric Imperial
Tensile strength 1158 MPa 167.95 ksi
Elongation 15% 15%
Modulus of elasticity 190-210 GPa 27557- 30457 ksi
Poisson’s ratio 0.27-0.3 0.27-0.3

Thermal Properties

The thermal properties of T8 tool steels are given in the following table

Properties Metric Imperial
Thermal expansion co-efficient 16-17 µm/m°C 8.8-9.4 µin/in°F
Thermal conductivity 16 W/mK 110 BTU.in/hrft².°F
 
T8 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade
Grade Standard Country Application
T8 ASTM USA High-Speed Tool Steel
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