| Grade | Alias / Standard | Hardness (HRC) | Use temp (°C) | Application | Rel. cost |
|---|---|---|---|---|---|
| H13 | AISI H13 · 1.2344 · 4Cr5MoSiV1 | 44–52 | ≤ 600 | Extrusion & porthole dies, hot work | •• |
| H11 | AISI H11 · 1.2343 | 44–52 | ≤ 580 | Inserts, mandrels; moderate impact | • |
| SKD61 | JIS · ≈ H13 | 46–52 | ≤ 600 | Japanese-spec porthole dies | • |
| 8407 | H13 premium (Uddeholm) | 46–52 | ≤ 620 | High-output porthole dies | ••• |
| S7 | AISI S7 | 52–56 | ≤ 400 | Shock tooling, backing plates, wedges | •• |
| P20 | 1.2311 | 30–34 | ≤ 300 | Pre-hardened die bases, plates | • |
| Alloy | Extrudability | Extrusion temp (°C) | Typical products | Note |
|---|---|---|---|---|
| 6063 | A | 480–525 | Doors, windows, radiators, decorative | General purpose; easiest to extrude |
| 6061 | B | 455–500 | Structural profiles | Medium strength; good weldability |
| 6082 | B | 450–495 | Heavy structural / engineering | High strength; needs more press force |
| 6005A | B | 460–505 | Frames, railway stock | Balanced strength and extrudability |
| 3003 | A | 500–550 | Heat exchangers, tubing | Soft alloy; high flow rate |
| 7075 | D | 400–450 | Aerospace components | Very high strength; hard to extrude |
| Material | Melt temp (°C) | Density (g/cm³) | Mold shrinkage (%) | Processing note |
|---|---|---|---|---|
| HDPE | 180–230 | 0.94–0.96 | 1.5–4.0 | High crystallinity; control cooling |
| PP | 190–245 | 0.90–0.91 | 1.0–2.5 | General purpose; low density |
| ABS | 200–250 | 1.04–1.06 | 0.4–0.7 | Moisture-sensitive; dry before use |
| PVC | 160–200 | 1.38–1.40 | 0.3–1.0 | Heat-sensitive; limit residence time |
| PS | 180–240 | 1.04–1.05 | 0.4–0.7 | Easy flow, brittle |
| PMMA | 210–250 | 1.17–1.20 | 0.3–0.6 | Optical grade; polish die surface |