1.2436 turned rounds
- pinxin
- huangshi
- within 30-45days
- 50000 Ton/Tons per Month
1.2436 high wear-resistant chromium steel, high carbon, high chromium ledeburite steel, cold work die steel.. Used to make cold work die with large cross-section, complex shape, high impact force and high wear resistance. Cold work molds include cold punching dies, wire drawing dies, drawing dies, stamping dies, thread rolling dies, thread rolling plates, cold heading dies and cold extrusion dies. The cold work die is made of steel, which should have high hardness, strength, wear resistance, sufficient toughness, and high hardenability, hardenability and other process properties according to the working conditions of its manufacture. Alloy tool steels used for this kind of purposes generally belong to high-carbon alloy steels, with a carbon mass fraction above 0.80%. Chromium is an important alloying element of this type of steel, and its mass fraction is usually not more than 5%. However, for some steels with high wear resistance and small deformation after quenching, the highest chromium mass fraction can reach 13%, and in order to form a large amount of carbides, the carbon mass fraction in the steel is also very high, up to 2.0%~ 2.3%. Cold work die steel has a high carbon content, and most of its structure is hypereutectoid steel or ledeburite steel. Commonly used steels include high carbon low alloy steel, high carbon high chromium steel, chromium molybdenum steel, medium carbon chromium tungsten steel, etc.
1.2436 Chemical Analysis (%):
| C | Mn | Si | Cr | V | W | P | S |
| 2.00-2.25 | 0.15-0.45 | 0.10-0.40 | 11.0-12.0 | - | 0.60-0.80 | ≤0.03 | ≤0.03 |
characteristic:
1.2436 high wear-resistant chromium steel, high carbon, high chromium ledeburite steel, cold work die steel. Containing higher carbon (1.45%~2.3% and more than 12% chromium, in addition to a small amount of molybdenum and vanadium, it belongs to the as-cast structure of steel, which is similar to the as-cast structure of high-speed steel, and a large amount of eutectic is excited during the crystallization process The network is too traffic (where the carbide content is about 20%, and the eutectic temperature is about 1150°C). These carbides are very hard and brittle. Although forging and processing, the carbides are broken to a certain extent, but the carbides Along the rolling direction, it is distributed in bands, nets, blocks, and piles, and the degree of segregation becomes serious with the increase of the steel diameter.
The steel has high hardenability, hardenability, toughness, wear resistance (3 to 4 times higher than general low alloy tool steel) and small quenching volume deformation.
Reference corresponding grade
Chinese GB standard grade Cr12W, German DIN material number 1.2436, German DIN standard grade x210Crw12, Italian UM standard grade X215CrW121KU, Spanish UNE standard grade X210CrW12, Japanese JlS standard grade SKD2, Austrian standard grade K107, Sweden SSAB (ASSAB) Standard grade Xw5, Swedish SS standard grade 2710, British BS standard grade BS1.
Heat treatment specifications
The starting temperature is 1150°C and the final temperature is 850°C.
Harden back to specification
Quenching temperature 960~980℃, oil cooling, tempering temperature (180±10)℃
