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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 |
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| 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.  |
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| 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.  |
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| Thermal processing characteristics | |
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| In-water embrittlement resistance | |
| The KDAMAX suppresses rust generation in water in comparison with the SKD61 and improved steel.  |
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| 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.  |
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| Melting-loss resistance | |
The KDAMAX has a 50% higher melting-loss performance than the SKD61.
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