KDA1S

The KDA1S is a new type ofsteel for die-casting that has the same basic functions of the KDA1 and features superior durability and cost-reduction performance.

Features of KDA1S

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.
Superior machinability after hardening and annealing.
30% or more higher machinability than the SKD61.
Approximately 5 times as high as the KDA1.
Superior tenacity
80% or more higher tenacity than the SKD61 (in the T direction).
Good tenacity equivalent to the KDA1.
Superior heat-softening resistance.
Twice as high heat-softening resistance as the SKD61 maintains high hardness for a long time.

Applications		Position of KDA1S

●Die-casting molds ●Hot-forging dies

Heat-check resistance

The KDA1S features finer cracks than the SKD61 and has a heat-check resistance equivalent to the improved SKD61.

Machinability

Superior machinability after hardening and annealing to the SKD61

Thermal processing characteristics

Melting-loss resistance		Heat-softening resistance

The KDA1S features superior melting-loss resistance to the SKD61, which is remarkably improved by surface treatment.		The KDA1S features superior heat-softening resistance to the SKD61.

Strength and tenacity

The KDA1S features superior tenacity to the SKD61. Results of Charpy impact tests at room temperature

Physical properties

The KDA1S features superior tenacity to the SKD61. Results of Charpy impact tests at room temperature