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KDAMAX

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Introduction

The KDAMAX is high-performance hot-tool steel for large-size dies that features superior crack resistance at the round corners of metal molds and crack resistance at water holes.

Grades Equivalent

STANDARD
BRAZIL
AUSTRIA
EN
NOT GIVEN
VM13IM
W302
X40CrMoV5-1
SLOVANIA
ITALY
JIS
S.KOREA
UTOP M02-EFS
ESKY0S2
SKD61
STD61
TAIWAN
CZECH REP.
CHINA
AMERICA
GMH13
TLIEFS
YTR5
H-13

Features of KDAMAX

1. Superior heat-check resistance

Superior heat-check resistance for complicated mold shapes.

Prolongs the service life at round corners of metal molds where complex stresses are centralized when manufacturing thin products.

2. Suppresses large cracks at the water holes

Suppresses large cracks at the water holes due to embrittlement in water caused by rust.

3. Superior hardening performance

Improves the hardening performance to suppress tenacity deterioration in large-size products.

Applications Position of KDAMAX
+ Die casting molds
+ Hot forging molds
+ Molds with complex shapes with projections and cavities
+ Large size molds		 Position of kdamax
Heat-check resistance
1) Cracks in the KDAMAX are as shallow as 40% of those in the SKD61.
2) The width of cracks on the die surface expands slowly.

Heat check of kdamax		 Relation between heat check life and temprature
Crack resistance at R corners
1) Cracks in the KDAMAX are as short as 40% of those in the SKD61.
2) Cracks from the die surface to the water holes progress slowly.
Cracks in the kdamax		 Relation between corner shapes and crack life
Thermal processing characteristics
Thermal processing characteristics of kdamax Annealing temprature of kdamax
Annealing process temprature of kdamax
In-water embrittlement resistance
The KDAMAX suppresses rust generation in water in comparison with the
SKD61 and improved steel.
kdamax suppresses rus in water		 Water embrittlement resistance of kdamax
Fatigue resistance
Few cracks at the water hole of molds improve the service life by 1.3 to 10 times
in comparison with the SKD61 and improved steel.
Fatigue resistance of kdamax		 Fatigue resistance of kdamax
Melting-loss resistance
The KDAMAX has a 50% higher melting-loss performance than the SKD61.
Melting-loss resistance of kdamax

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Kushal Metal & Steel Industries