PROPRIETARY Exera 4C27A free-cutting Stainless steels
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PROPRIETARY Exera 4C27A free-cutting Chemical Composition
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PROPRIETARY Exera 4C27A free-cutting Physical Properties
Temperature
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PROPRIETARY Exera 4C27A free-cutting Heat Treatments
- When required, soft-annealing should be conducted for a period of 1h at a temperature of 650-680°C.
d < 6 mm: Hardening at 1030-1050°C, soaking time: 3-6 min, quenching in oil at 50°C.
d > 6 mm: Hardening at 1030-1050°C, soaking time: 6-10 min, quenching in oil at 50°C.
d < 2 mm may also be cooled in air, or to prevent oxidation, in a protective gas.The smaller the dimensions, the shorter the soaking time. To prevent oxidation and decarburization, hardening should be carried out in a protective gas atmosphere using nitrogen, argon or vacuum.
Tempering: Heat at 100-350°C for 30-60 min. Temperatures below 350°C are recommended for the retention of favorable corrosion resistance.
The core of the material should have a tempering time of at least 30 min. To reduce the risk of cracking tempering should be conducted immediately after hardening. The heating rate should not be too high, particularly in the case of intricately shaped components.
PROPRIETARY Exera 4C27A free-cutting Mechanical Properties
Temperature
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PROPRIETARY Exera 4C27A free-cutting International Equivalent Materials
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