The KDA1S is a new type of
steel for die-casting that has the same basic functions of the KDA1 and
features superior durability and cost-reduction performance.
1.Superior heat-check resistance
●Hard to crack in comparison with the SKD61, and has a finer structure. ●Has
superior heat-check resistance equivalent to the KDA1 and offers
a longer service life. 2.Superior machinability after hardening and annealing. ●30%
or more higher machinability than the SKD61. ●Approximately 5
times as high as the KDA1. 3.Superior tenacity ●80% or more higher tenacity than the
SKD61 (in the T direction). ●Good tenacity equivalent to the KDA1. 4.Superior heat-softening resistance. ●Twice as high heat-softening
resistance as the SKD61 maintains high hardness for a long time.
KDA1S features finer cracks than the SKD61 and has a heat-check
resistance equivalent to the improved SKD61.
machinability after hardening and annealing to the SKD61
KDA1S features superior melting-loss resistance to the SKD61, which
is remarkably improved by surface treatment.
KDA1S features superior heat-softening resistance to the SKD61.
KDA1S features superior tenacity to the SKD61.
Results of Charpy impact tests at room temperature
KDA1S features superior tenacity to the SKD61. Results of Charpy
impact tests at room temperature
NIPPON KOSHUHA STEEL CO., LTD. 2007, All Rights Reserved