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Mat.No. 1.3265, DIN S18-1-2-10, AISI T5
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Designation by Standards Mat. No. DIN EN AISI 1.3265 S18-1-2-10 HS18-0-1-10 T5 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.76 max. 0.45 max. 0.40 4.15 0.65 - 1.55 18.00 Co: 9.50 Description This alloy is a High Speed, tungsten type tool steel. It is a deep hardening steel. Applications Generally used as cutting tools, broaches and cold extrusion punches, turning blades, punchers, metal working blades. Physical properties (avarage values) at ambient tempe...
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Designation by Standards
| Mat. No. | DIN | EN | AISI |
| 1.3265 | S18-1-2-10 | HS18-0-1-10 | T5 |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.76 | max. 0.45 | max. 0.40 | 4.15 | 0.65 | - | 1.55 | 18.00 | Co: 9.50 |
Description
This alloy is a High Speed, tungsten type tool steel. It is a deep hardening steel.
Applications
Generally used as cutting tools, broaches and cold extrusion punches, turning blades, punchers, metal working blades.
Physical properties (avarage 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
Soft Annealing
Heat to 800-830oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 300.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 600-650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Hard4en from a temperature of 1250-1280oC followed by salt bath or thermal quenching or warm bath approx. 550oC.
Tempering
Tempering temperature: 550-590oC.
Tempering Temperature (oC) vs. Hardness (HRC)
| 100oC | 150oC | 200oC | 250oC | 300oC | 350oC | 400oC | 450oC | 500oC | 550oC | 600oC | 650oC |
| 64.0 | 64.5 | 63.0 | 62.5 | 62.0 | 62.0 | 62.5 | 63.6 | 64.8 | 66.0 | 64.0 | 60.0 |
Tempering Diagram
Click the image to enlarge the diagram.
Forging
Hot forming temperature: 1150-900oC.
Machinability
Machinability of T5 is only fair. It ranks as 50% that of the W group water hardening simple tool steels.
Corrosion Resistance
Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.
Forms manufactured: Please see the Dimensional Sales Program.
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