| 1.2312 MOD | 40 CrMnMoS 8 6 |
1.2312 MOD is plastic mould tool steels, suitable to operate in high temperature, used mainly for plastic moulds, hydroforming tools and frames for plastic pressure dies. They are highly hardenable, resistant to tempering and strong in high temperature.
| Machinability | Thermal Conductivity | Fracture Toughness | Corrosion
Resistance |
Weldability | Wear
Resistance |
High-Gloss Polishability | Etch
Grainability |
Chrome Plating Ability | Through
Hardenability |
Nitridability | PVD
Coatability |
Thermal Strength | |
| 1.2311 | 3 | 3 | 2 | 0 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | 2 |
| 1.2312 | 4 | 3 | 0 | 0 | 1 | 2 | 0 | 0 | 1 | 2 | 2 | 1 | 2 |
| 1.2711 | 2 | 3 | 3 | 0 | 3 | 4 | 4 | 3 | 4 | 3 | 3 | 3 | 3 |
| 1.2738 | 3 | 3 | 2 | 0 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 2 |
| 2738 mod | 3 | 4 | 3 | 0 | 4 | 3 | 4 | 4 | 4 | 4 | 3 | 3 | 3 |
4: very good
3: good
2: neutral
1: conditionally suitable
0: unsuitable
Composition:
| %C | %Si | %Mn | %P | %S | %Cr | %Mo | %Ni | %W | % Ti |
| 0,35-0,45 | 0,30-0,50 | 1,40-1,60 | 0,030 | 0,05-0,10 | – | 1,80-2,00 | 0,15-0,25 | – | – |
Hot working:
Forging temperature range: 1100-850℃
Note: Heat to 1200 ℃. Do not forge below 850.
Heat treatment:
| soft annealing | Hardness HB30 | hardeninig | tempering | temper hardness(HRC) |
| 760-780 | 230 | 830-870 | 640-680 |
Main application:
Tools for synthetic plastics-processing
Shape of product:
Round, flat, step shape, ring, disc other shape depend on customer needs