Senrui Precision — Mold Steel Database · Nine-Dimensional Property Map · Five Systems (Pre-hardened/Mirror/Corrosion-Resistant/Hot-Work/Cold-Work) · Key Physical Property Comparison
Nine-Dimensional Radar Chart Analysis
Key quantitative metrics of Senrui's commonly used mold steels: hardness, heat resistance, mirror finish and system coverage.
Covering five major systems: pre-hardened, mirror, corrosion-resistant, hot-work, and cold-work; click tags to filter quickly; click the cards above to view the nine-dimension map details.
| Grade | Category | Hardness HRC | Key Properties | Typical Applications |
|---|---|---|---|---|
| P20 (2311) | Pre-Hardened Plastic Mold | 28–35 | General-Purpose Pre-Hardened, Easy to Machine | Home Appliance / Daily-Use Molds |
| 718H (738) | Pre-Hardened, High Polishability | 33–38 | High Polish, High-Gloss Molds | Automotive / Home Appliance Appearance Molds |
| 2738 (738HH) | Pre-Hardened & Hardened | 35–40 | Large Long-Life Molds | Automotive Bumper Molds |
| 2312 (1.2312) | Pre-Hardened, Free-Cutting | 28–34 | Fast Machining, Low Cost | Structural / Bracket Molds |
| NAK80 | Mirror-Finish Pre-Hardened | 37–43 | Mirror Grade, No Heat Treatment Required | High-Gloss / Textured Molds |
| NAK55 | Mirror Finish, Free-Cutting | 37–43 | Etched Graphics, Easy to Machine | Etched Decorative Molds |
| S136 (2083) | Corrosion-Resistant Stainless Steel | 48–52 | Corrosion-Resistant Mirror Finish, Transparent Parts | Medical / Food / Transparent Molds |
| 420 (1.2083) | Martensitic, Corrosion Resistant | 48–55 | Hardenable, Corrosion Resistant | Corrosive Resins / General-Purpose Molds |
| H13 (2344) | Hot Work Tool Steel | 44–52 | Red Hardness, Thermal Fatigue Resistance | Die Casting / High Mold Temperature Molds |
| 8407 | Premium Hot Work | 44–52 | High Toughness, Long Life | High-End Die Casting Molds |
| 2343 (1.2343) | Hot Work, High Toughness | 42–50 | High Toughness, Heat Crack Resistance | Hot Forging / Extrusion Molds |
| DC53 (SKD11) | Cold Work, High Wear Resistance | 60–62 | Ultra Wear Resistant, Stamping | Stamping / Blanking Molds |
| SKD11 (1.2379) | Cold Work Tool Steel | 58–60 | High Hardness & Wear Resistance, General-Purpose | Stamping / Forming Molds |
Common questions on mold steel selection and application? Our engineers will answer.
By product type and requirements: for high-gloss appearance choose mirror steel (NAK80/S136); for corrosion resistance choose stainless steel (S136/420); for long-life hot molds choose hot-work steel (H13/2344); for high-wear stamping choose cold-work steel (DC53); for general structures choose pre-hardened steel (P20/718H).
Pre-hardened steel is heat-treated at the mill and ready to use with low machining deformation; hardened steel requires post heat treatment to reach hardness, suited to higher wear/corrosion resistance but needs deformation control.
NAK80 is mirror-finished as delivered, no heat treatment; S136 can reach mirror after hardening and is corrosion-resistant, suitable for transparent / medical parts.
Excellent red hardness and thermal fatigue resistance; withstands high mold temperatures and rapid heating/cooling (e.g., RHCM, die casting).
P20 / 718H / NAK80 / S136 / H13 / 2344 / DC53, etc. are commonly used in mass production; see the Nine-Dimension Atlas card for details.
Upload the part and production-volume requirement; Senrui mold engineers will combine polishing, corrosion resistance, life, and cost to recommend the most suitable steel and heat-treatment plan.