Grade DIN 1.4028 ( SUS420J2 ), finish 2B, cold rolled martensitic stainless steel sheets
Stainless steel grade 1.4028 ( 420J2 ) is medium-hardness martensitic grade. Corrosion resistant in water and steam.
Applied for cutting utensils, surgical instruments, measuring tools, mechanical parts esp. subject to wear.
Chemical composition ( in weight % )
Cutting utensils and surgical instruments, Measuring tools, Mechanical parts especially in wear resistant applications,
Springs, Printing industry...
Annealing of this material can be performed by heating uniformly to 840 - 900°C (1544 - 1652°F) and
held until the temperature is uniform throughout the section.
Soaking and cooling is required.
Stainless steel grade 420J2 can be hardened by heating 950 - 1020°C (1742 - 1868°F) and
held until temperature is uniform throughout the section.
This should be followed by quenching in oil or air cooling.
Tempering should be done when it is slightly warm.
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