Cold Extrusion Mould Tool Steel
Fushun are main manufacturer of tool steel for Cold Extrusion Mould.
What is Cold Extrusion Mould?
Cold extrusion moulds are advanced tooling systems engineered to shape metal parts by forcing material through a precisely designed opening under room temperature conditions. These moulds are constructed with complex geometrical features and tight tolerances to control material flow under extreme pressures, typically ranging from 1000-2000 MPa. The complete mould assembly includes multiple precision-engineered components such as punches, containers, and forming matrices, all working in harmony to transform raw material into finished parts.
The primary purpose of cold extrusion moulds is to manufacture high-precision components with superior surface finish and enhanced mechanical properties. They are widely used in automotive, aerospace, and industrial applications to produce parts like transmission components, structural elements, and precision shafts. This process delivers significant advantages including minimal material waste, improved strength through work hardening, exceptional dimensional accuracy, and outstanding surface quality. Cold extrusion can achieve substantial material reduction ratios while maintaining consistent part quality in high-volume production.
The mould materials used in cold extrusion applications contain carefully balanced combinations of alloying elements to achieve optimal performance under severe working conditions. These high-performance tool steels typically contain high percentages of chromium (8-12%), tungsten (6-12%), molybdenum (4-8%), and vanadium (2-4%). This specific composition enables the material to achieve extreme hardness levels (62-65 HRC) while maintaining sufficient toughness to resist cracking. The microstructure features finely distributed carbides in a tempered martensite matrix, providing exceptional wear resistance and dimensional stability. Advanced surface treatments and coatings are often applied to further enhance wear resistance and reduce friction during the extrusion process.
Cold Extrusion Mould Materials
| — | — | — | Cr4W2MoV | |
| — | — | — | 6Cr4W3Mo2VNb | |
| — | — | 6W6Mo5Cr4V | ||
| — | — | — | W6Mo5Cr4V2 | |
| — | — | — | 7Cr7Mo2V2Si | |
| D2 | SKD10 | 1.2379 | X153CrMoV12 | Cr12Mo1V1 |
Chemical Composition of Cold Extrusion Mould
| Grade | C | Si | Mn | Cr | W | Mo | V |
| Cr4W2MoV | 1.12～1.25 | 0.40～0.70 | ≤0.40 | 3.50～4.00 | 1.90～2.60 | 0.80～1.20 | 0.80～1.10 |
| 6Cr4W3Mo2VNb | 0.60～0.70 | ≤0.40 | ≤0.40 | 3.80～4.40 | 2.50～3.50 | 1.80～2.50 | 0.80～1.20 |
| 6W6Mo5Cr4V | 0.55～0.65 | ≤0.40 | ≤0.50 | 3.70～4.30 | 6.00～7.00 | 4.50～5.50 | 0.70～1.10 |
| W6Mo5Cr4V2 | 0.80～0.90 | 0.15～0.40 | 0.20～0.45 | 3.80～4.40 | 5.50～6.75 | 4.50～5.50 | 1.75～2.20 |
| 7Cr7Mo2V2Si | 0.68～0.78 | 0.70～1.20 | ≤0.40 | 6.50～7.50 | 1.90～2.30 | 1.80～2.20 | |
| Cr12Mo1V1 | 1.40～1.60 | ≤0.60 | ≤0.50 | 11.00～13.00 | 0.70～1.20 | 0.50～1.10 |
Properties of Cold Extrusion Mould Steel
| Grade | Annealed HBW | Hardened HRC |
| Cr4W2MoV | ≤269 | 60 |
| 6Cr4W3Mo2VNb | ≤255 | 60 |
| 6W6Mo5Cr4V | ≤269 | 60 |
| W6Mo5Cr4V2 | ≤255 | 64 |
| 7Cr7Mo2V2Si | ≤255 | 60 |
| Cr12Mo1V1 | ≤255 | 59 |
Available Shapes from Fushun
*Round Bar
*Flat Bar
*Block
*Plate
Contact Information
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