TG-1.2367 is a Hot work tool steel with good wear resistance at high temperatures, high hardness and tempering strength.
Smelting method : EAF+LF+VD+ESR
Main Characteristics : High heat resistance, favorable high-temperature tenacity, high thermal fatigue resistance and abrasion performance, little change in heat treatment size, nitridation treatment, favorable polishability and favorable isotropic.
Major Applications : Long life pressure casting molds
Forged molds and inserts
Hot extrusion molds
Chemical constituent (%) :
| C | Si | Mn | Cr |
| 0.37 | 0.4 | 0.45 | 5.0 |
| Mo | V | P | S |
| 2.8 | 0.55 | ≤0.015 | ≤0.001 |
Physical Property :
| Room temperature density (kg/m³) | Specific heat of room temperature (J/Kg.K) | 200°C thermal conductivity (W/m.K) |
| 7.83 | - | 25.0 |
| Elastic mouldsus (N/nm²) | Linear Expensivity (x10-6K) 20 ~ 200°C
20 ~ 400°C
|
| 215,000 |
12
12.5
|
Ultrasonic flaw detection :
Flaw detection standard: as per Class A of GB/T4 162, flat bottom hole ≤Φ 2mm, or as per customer requirements.
Purity :
| Class A | Class B | ||
| Fine | Coarse | Fine | Coarse |
| 1.0 | 0.5 | 1.5 | 1.0 |
| Class C | Class D | ||
| Fine | Coarse | Fine | Coarse |
| 1.0 | 1.0 | 1.5 | 1.0 |
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 criteria 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) |
| > 60~200mm | 300 | 250 |
| > 201~300mm | 280 | 220 |
Supply Specification :
| Product Name | Specification/mm | Material |
| Forged round bar | Φ 71~810 | 1.2367 SUP |
| Forged module | (120~400) x (300~800) | 1.2367 SUP |
| Rolled round bar | Φ 14.5~70 | 1.2367 SUP |
| Rolled flat bar | (12~120) x (200~810) | 1.2367 SUP |
Thermal Treatment :
| Softening annealing | Quenching |
| Heating to 820-840°C for heat insulation; cooling to 600°C at 10°C/h air cooling. | 1,030~1,060°C 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 450~550°C. |
Excellent heat resistance and crack resistance, quite high tenacity, quite high ductility, favorable isotropic, favorite processability and polishability as well as favorable dimension stability during heat treatment.
For various metal pressure casting molds, for example: automobile engine cylinder body, cylinder cover, gearbox shell molds.
Hot extrusion molds, mainly for hot extrusion of aluminium profiles.
High-quality plastic molds, for example: high abrasion resistance plastic molds for automobiles.
Equivalent Grade from BOHLER W302 ISOBLOC