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Help CenterTooling Mold Aluminum Plate 7075 T6 20mm 30mm 40mm High Hardness Flat Sheet for Mold Making
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At Hemaokang Steel (Shandong) Co., Ltd., we understand that the quality of your tooling starts with the raw material. Our Tooling Mold Aluminum Plate 7075 T6 is engineered to meet the demanding needs of mold and die makers who require high hardness, dimensional stability and excellent machinability. Available in 20mm, 30mm and 40mm thicknesses, this flat sheet is a reliable choice for applications that call for exceptional strength and wear resistance. In this product overview, you will find the technical characteristics, practical benefits and typical applications of this aluminum plate.
Product Overview
7075 is one of the strongest aluminum alloys available in the commercial market. It uses zinc as the main alloying element, together with magnesium and copper, and is combined with a T6 temper treatment that includes solution heat treatment and artificial aging. This process gives the material a good balance of high tensile strength, moderate hardness and acceptable machinability. For mold-making purposes, the high hardness and good dimensional stability of the T6 condition help reduce the risk of deformation during machining and repeated thermal cycling.
Why Choose 7075-T6 Aluminum for Mold Making?
Mold makers often select 7075-T6 aluminum plate when they need a lightweight solution that can withstand repetitive loads and maintain stable geometry. Compared to mild steel, this aluminum plate is about one-third the weight, making handling and assembly easier in tool rooms and production floors. At the same time, it provides good strength for support plates, mold bases, jigs, fixtures, prototype cavities and other tooling components.
Key Features & Benefits
- High Hardness: Supplies a harder surface than many standard aluminum grades, helping resist wear, scratches and minor impact during mold assembly and operation.
- Excellent Strength: Offers one of the highest strength-to-weight ratios among aluminum alloys, allowing thinner sections without sacrificing structural support.
- Dimensional Stability: The T6 temper and controlled processing help minimize internal stress, reducing the chance of warping after material is removed during CNC machining.
- Good Machinability: With appropriate tooling parameters, 7075-T6 can be milled, drilled, tapped and turned to produce accurate mold details.
- Lightweight Handling: Reduces operator fatigue and lowers the load on automated equipment, making the material practical for frequent mold changes.
- Wide Thickness Range: The available 20mm, 30mm and 40mm plates can be matched to different mold stack heights, backup plate designs and fixture requirements.
- Custom Production: Length, width, surface finish and additional processing steps can be tailored to your project.
Technical Specifications
| Alloy | 7075 |
| Temper | T6 |
| Thickness | 20mm, 30mm, 40mm |
| Form | Flat sheet / plate |
| Hardness | High hardness (typical HB 150) |
| Surface Condition | Mill finish; other finishes available upon request |
| Applications | Injection mold bases, blow mold tooling, jigs, fixtures, prototype molds |
| Processing | Cutting, milling, drilling, grinding (optional) |
Application Guidance
This 7075-T6 aluminum plate is especially suitable for supporting structures in plastic injection molds, rubber molds and blow molds. It can also be used for locating fixtures, assembly jigs, check gauges and prototype tooling where flatness and rigidity matter. Because the plate is supplied in flat sheet form, you can cut it to your required blank size before machining cavities or mounting holes.
For best results, we recommend using sharp carbide tooling and sufficient coolant when machining 7075-T6. Climb milling and balanced feed rates can help achieve a good surface finish while reducing the risk of chatter. If your design requires tight tolerances, stress relieving or additional flattening, these options can be discussed with our technical team.
Quality and Supply Assurance
Hemaokang Steel (Shandong) Co., Ltd. was established in 2025 and has built an export-focused operation with an annual export value between US$50 Million and US$100 Million. We employ 51–100 people and operate from Liaocheng, Shandong, China, with convenient access to Qingdao port for international shipping. Our company is ISO9001 certified, and our main markets include North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia and the domestic market. This global reach reflects our ability to serve diverse customers with consistent product quality and responsive communication.
We invite you to contact us for a quote or to discuss your specific plate dimensions, processing needs and delivery schedule. Our team is ready to support your mold-making projects with dependable supply and professional service.
FAQ
Q: What makes 7075 aluminum different from 6061?
A: 7075 uses zinc as the primary alloying element and generally offers higher strength than 6061. It is often chosen for tooling and structural parts where strength is more critical. 6061 is also popular for general machining and offers good corrosion resistance, while 7075-T6 provides greater hardness and mechanical strength.
Q: Is this plate suitable for injection mold cavities?
A: It is commonly used for mold bases, support plates, backup plates and prototype cavities. For very high production volumes or highly abrasive materials, tool steel may be more appropriate. For short-run and prototype molding, 7075-T6 aluminum is a practical and cost-effective option.
Q: Can you cut the plate to custom sizes?
A: Yes, we can supply cut-to-size blanks based on your drawings or specifications. Additional services such as milling, drilling and surface finishing are available upon request.
Q: Are other thicknesses available?
A: This product is offered in 20mm, 30mm and 40mm thicknesses. If you need a different thickness, please contact us with your requirement and we will confirm availability.
Q: How do you control flatness and tolerance?
A: We follow controlled processing and inspection procedures. Flatness and dimensional tolerances can be customized according to your application, and our technical team can help you define the most suitable specification.
Q: What is the delivery condition of the surface?
A: The standard condition is mill finish. If you need a polished, brushed or anodized surface, that can be discussed as an optional treatment.
Q: Do you support small quantity orders?
A: We accept a range of order quantities. Please contact our sales team with your required size and quantity so we can provide a suitable quotation.
Q: What quality system does your company follow?
A: Our company is ISO9001 certified, and we maintain a practical quality management approach for incoming material inspection, production coordination and final shipment preparation.
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