Audited Supplier
YMT2343R is a specialized version of the high-alloy Chromium-Molybdenum-Vanadium Hot Work Tool steel.
Engineered for the most demanding high-pressure Light Alloys (Al-Mg) die casting dies, adhering to NADCA #207-2011 PUBLICATION #229 specifications.
Delivered in annealed condition at less than 230HB max.
Main applications
High pressure Aluminium/Magnesium die casting moulds.
Moulds for low pressure Aluminium die castings.
Moulds for Aluminium gravity die castings.
Plastic injection moulds with optical mirror polishing.
The main features of YMT2343R are:
• excellent isotropy
• high mechanical properties and strength
• high hardenability
• high thermal conductivity
• high tempering resistance
• high thermal stability
• high thermal fatigue and hot cracking resistance
• excellent fracture toughness in hot and cold conditions
• high ductility
• high wear and erosion resistance
• high oxidation resistance
• high ductility
Chemical analysis
| Alloy | C | Si | Mn | Cr | Mo | V | ||
| % in wgt | 0.32-0.40 | 0.80-1.10 | 0.30-0.50 | 4.80-5.50 | 1.20-1.50 | 0.30-0.50 |
Physical and mechanical properties
Main physical properties
| 200 °C | 400°C | 600°C | ||
| Modulus of elasticity [MPa] | 210 | 183 | 168 | |
| Coefficient of thermal expansion [10-6/K] | - | 11.8 | 12.4 | |
| Thermal conductivity [W/m K] | 24.4 | 27.1 | 28.5 |
Main mechanical properties
| 400°C | 500°C | 600°C | ||
| UltimateTensileStrength (UTS) [MPa] | 1150 | 950 | 670 | |
| Yield stress (YS) [MPa] | 900 | 750 | 470 |
| Soft annealing | |
| Suggested temperature | 850°C |
| Heating | Max 50°C/h |
| Soaking time | Minimum 120 min from the temperatures settlement |
| Cooling | Slow in the furnace at max 25°C/h to 600°C afterward at room temperature |
| Stress Relieving | |
| Suggested temperature | For material in annealed condition: 700-750 °C. For material in H+T condition or after machining: 50°C less than the last tempering |
| Heating | Max 100 °C/h |
| Soaking time | Minimum 120 min from the temperature's settlement |
| Cooling | Slow in the furnace at max 25 °C/h to 200°C, afterward at room temperature |
| Hardening | |
| First pre-heating temperature | 400 °C |
| Heating | Max 150 °C/h |
| Soaking time | 25 min every 25 mm thickness |
| Second pre-heating temperature | 600 °C |
| Heating | Max 150 °C/h |
| Soaking time | 20 min every 25 mm thickness or when (Ts-Tc) < 90 °C |
| Third pre-heating temperature | 800 °C |
| Heating | Max 150 °C/h |
| Soaking time | 20 min every 25 mm thickness or when (Ts-Tc) < 90 °C |
| Austenitizing temperature | 990-1010°C |
| Heating | > 150°C/h |
| Soaking time | t = ( x + 39 ) / 2 or 30 min from (Ts-Tc) < 15 °C |
| Cooling | Air, vacuum cooling, salt bath, polymer in water |
| First tempering temperature | 560 - 590 °C |
| Soaking time | t' = 0,8 x + 120 |
| Cooling | Room temperature |
| Second tempering temperature | higher than the temperature used for the first temper. |
| Soaking time | t" = 0,8 x + 120 |
| Cooling | Room temperature |
| Third tempering temperature | 30-50 °C lower than the max temperature previously used |
| Soaking time | t'" = 0,8 x + 180 |
| Cooling | Slow cooling in the furnace up to 250 °C, afterward at room temperature |
