KDAMAX

• The crack length of KDAMAX is 40% shorter than that of SKD61.

• The KDAMAX slows the expansion of the width of the cracks on the surface of the dies.
• Occurrence of heat check on the surface of the KDAMAX (47HRC)
• Relationship between the heat check initiation life and the temperature

Test conditions

• High-frequency heating from 100􀋆 to 600􀋆 (with a temperature difference of 500􀋆􀀁between cooling and heating)

• The crack length of KDAMAX is 40% shorter than that of SKD61.
• The KDAMAX slows the progress of cracks from the die surface to the water hole.
• Relationship between the corner shape and Crack initiation life (times)

• The KDAMAX is more resistant to rust in water than the SDK61 or improved steel.

Test conditions

• Water temperature 30􀋆 Immersion time: 50 hours

• With the KDAMAX, the die is 1.3 to 10 times as resistant to cracks by aging at the water cooling holes as it is with the SDK61 or improved.
• Result of rotary bending fatigue test (hydrogen embrittled material: 43 HRC)
• Rotary bending fatigue test (hydrogen embrittled material) Result of rotary bending fatigue test (hydrogen embrittled 􀕳􀰸􀛂􀍛􀵼􀿑

• The KDAMAX is 50% more resistant to dissolution loss than the SKD61.

Test conditions

• Molten metal: ADC12
• Temperature: 700􀋆
• Retention time: One hour
• Test sample: 50HRC