TGGP-13 Supreme can be regarded as an “all-round” steel used in several application areas. The high degree of purity and the very fine structure shows improvement in dies and components where high mechanical and thermal stresses are involved.
Smelting method : EAF+LF+VD+ESR
Main Characteristics : High ductility, high thermal fatigue resistance, high thermal erosion resistance, high isotropic property, high purity and small heat treatment distortion.
Major Applications : Long-life Al, Mg and Zn alloy pressure casting molds, for example: automobile engine cylinder body, cylinder cover, gearbox shell molds.
Large-scale hot extrusion molds; for example, aluminium alloy extrusion molds for high-speed rails and metros.
Precise hot forging molds; for example, automobile engine crankshaft and connecting rod molds; gear molds of gear boxes.
Equivalent Grade from UDDEHOLM / ORVAR SUPREME
Chemical constituent (%) :
| C | Si | Mn | Cr |
| 0.39 | 1.1 | 0.4 | 5.3 |
| Mo | V | P | S |
| 1.45 | 1.0 | ≤0.009 | ≤0.001 |
Physical Property :
| Room temperature density (kg/m³) | Specific heat of room temperature (J/Kg.K) | 200°C thermal conductivity (W/m.K) |
| 7.80 | 430 | 22 |
| Elastic mouldsus (N/nm²) | Linear Expensivity (x10-6K) 20 ~ 200°C
20 ~ 400°C
|
| 215,000 |
11.3
11.9
|
Ultrasonic flaw detection :
As per SEP1921: E/e flaw detection or GB/T4 162 Class AA flaw detection, i.e., flat bottom hole ≤Φ 1mm, no flaw detection noise wave shall appear or please comply with customer regulation.
Purity :
| Class A | Class B | ||
| Fine | Coarse | Fine | Coarse |
| 0.5 | 0 | 1.0 | 0.5 |
| Class C | Class D | ||
| Fine | Coarse | Fine | Coarse |
| 0.5 | 0 | 1.0 | 0.5 |
Delivery State :
(1) Delivery hardness: delivery under annealing state, delivery hardness ≤229HB;
(2) Organization state and impact power requirement: the organization and segregation shall comply with North American Die Casting Association No. 207 criterion;
(3) Impact power sample; please sample according to the central part of steel. The samples shall be treated according to criterions in North American Die Casting Association, making sure that hardness of samples at 45±2HRC. Dimension of sample: 7*10*55. Gapless.
| Specification (diameter, thickness mm) | Average impact power at the center part not less than (J) | Minimum impact power per sample not less than (J) |
| > 60~300mm | 300 | 250 |
| > 300mm | 300 | 200 |
Supply Specification :
| Product Name | Specification/mm | Material |
| Forged round bar | Φ 71~810 | TGGP 13 |
| Forged module | (120~400) x (300~800) | TGGP 13 |
| Rolled round bar | Φ 14.5~70 | TGGP 13 |
| Rolled flat bar | (12~120) x (200~810) | TGGP 13 |
Thermal Treatment :
| Softening annealing | Quenching |
| Heating to 850°C for heat insulation; cooling to 600°C at 10°C/h air cooling. | 1,020~1,040°C quenching; high speed gas quenching or hot oil cooling |
| Tempering |
| Selecting tempering temperature according to hardness requirements; please conduct tempering for 3 times; prevent tempering under 425~550°C. |
High ductility, high thermal fatigue resistance, high thermal erosion resistance, high isotropic property, high purity and small heat treatment distortion.
Long-life Al, Mg and Zn alloy pressure casting molds, for example: automobile engine cylinder body, cylinder cover, gearbox shell molds.
Large-scale hot extrusion molds; for example, aluminium alloy extrusion molds for high-speed rails and metros.
Precise hot forging molds; for example, automobile engine crankshaft and connecting rod molds; gear molds of gear boxes.
Equivalent Grade from UDDEHOLM / ORVAR SUPREME