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Accessories APSX, Other Equipment, Plastic Injection Molding Machine
ASTM D638 Type IV Tensile Test Mold
Standard size 6061 aluminum mold machined by the Spyder CNC for the APSX-PIM.
Install + training included
Tailored service plan
Built for production teams
What your process engineer actually checks
From printed prototype to molded part
We use injection molding to bridge our own printed prototypes into short runs, so install includes validated parameters for your resin and tooling guidance. The team that trains you actually molds parts — not a distributor reading a manual.
An applications engineer on the line
Questions on tooling, shot size, cycle times, or pellet selection? A named applications engineer answers directly. Most replies in under 4 hours, NDA standard.
About this product
This pre-assembled aluminum mold is engineered for producing standard ASTM D638 Type IV tensile test specimens. Designed for seamless integration with the APSX-PIM machine, it includes all necessary mounting hardware for immediate operation.
Product Overview & Specifications
- Mold Dimensions: 4.8″ (W) × 6.0″ (H) × 2.0″ (D)
- Test Specimen Produced: ASTM D638 Type IV Tensile Bar
- Part Dimensions: 4.75″ (L) × 0.75″ (W) × 0.125″ (Thick)
- Included Components: Pre-installed alignment pins & bushings, four (4) shoulder bolts, one (1) set of clamping claws.
- Note: Multiple mold orders include only one set of claws to be shared between frames.
Key Features & Benefits
- Ready for Production: Arrives fully assembled with all pins, bushings, and hardware installed. Simply mount and begin molding.
- Active Thermal Management: The specifically designed longer shoulder bolts create a passive cooling gap between the mold and the nozzle plate until the machine is fully clamped. This design significantly improves thermal stability and cycle time by reducing heat transfer.
- Precision Engineering: Tight-tolerance pins and bushings guarantee perfect mold alignment for consistent, high-quality, and flash-free test specimens every time.
Installation & Alignment Procedure
- Mounting:
- Secure the left side of the mold to the machine’s platen using the four (4) provided shoulder bolts.
- Secure the right side using the included set of clamping claws.
- Orientation: Ensure the top edge of the mold is perfectly flush with the top of Block 4 on the APSX-PIM.
- Alignment Check:
- Use the manual control buttons to initiate the clamping cycle.
- Carefully observe as the mold halves begin to engage.
- HALT the machine immediately once alignment is initiated.
- Critical Safety Note: The pins and bushings are a tight, interference fit. They must be fully seated using the controlled force of the machine’s clamp. Do not attempt to press them together by hand, as this can cause injury or damage to components.
- Finalize Installation: Once aligned, complete the clamping cycle. The mold will make full contact with the nozzle plate only at the final clamp position, ensuring proper injection.
Running a different press? We’ll fit it.
These ASTM molds are configured for the APSX-PIM, but we also machine ASTM tensile, flexural and impact molds (D638, D790, D256) to fit third-party injection-molding machines — BOY, Arburg, Wittmann and others. Send us the mounting dimensions and nozzle/sprue location from a mold you run today, and we’ll CNC one to match. Standard and custom builds welcome.
| Brand | APSX |
| Country of origin | USA |
| Platform | FIM |
| Ejector Pin Option | Yes, No |
Need tooling or a specific resin?
We mold our own. Tooling and trials on request.
Need a mold built, an insert cut, or a trial run before committing? We can produce tooling and run sample shots on the actual machine so you see molded parts first. Typical tooling lead 2–4 weeks.
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· Ships from California · timeline confirmed at quotationCommon questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What is the ASTM D638 Type IV Tensile Test Mold?
The ASTM D638 Type IV Tensile Test Mold is a precision-machined aluminum injection mold designed to produce standardized ASTM D638 Type IV tensile test specimens. It is compatible with the APSX-PIM Plastic Injection Molding Machine and allows manufacturers, researchers, and educators to create consistent test bars for evaluating the mechanical properties of thermoplastic materials.
What is the ASTM D638 Type IV standard used for?
ASTM D638 is the industry standard for measuring the tensile properties of plastics. Type IV specimens are commonly used to determine tensile strength, elongation, Young's modulus, and other mechanical properties required for material qualification, product development, quality control, and research.
Is this mold compatible with the APSX-PIM injection molding machine?
Yes. This mold is specifically designed for seamless integration with the APSX-PIM Plastic Injection Molding Machine. It arrives pre-assembled with all required mounting hardware, alignment pins, bushings, shoulder bolts, and clamping components for quick installation.
What material is the mold made from?
The mold is precision machined from high-quality 6061 aluminum. This material provides excellent dimensional accuracy, thermal conductivity, durability, and repeatable molding performance while remaining lightweight and easy to handle.
What size tensile specimen does the mold produce?
The mold produces ASTM D638 Type IV tensile bars measuring approximately 4.75 inches long, 0.75 inches wide, and 0.125 inches thick, meeting the standard dimensions required for tensile testing.
Does the mold include all required hardware?
Yes. Each mold is delivered fully assembled with alignment pins, precision bushings, four shoulder bolts, and the necessary clamping hardware for installation on the APSX-PIM. Everything required to begin molding is included.
What is the purpose of the optional ejector pin system?
The optional ejector pin system simplifies part removal after molding. It helps eject finished tensile specimens quickly and consistently while reducing the risk of part damage, making it especially valuable for higher-volume testing or production environments.
Why are alignment pins and bushings important?
Precision alignment pins and bushings ensure that the mold halves close accurately during every cycle. Proper alignment minimizes flash, improves dimensional consistency, and produces high-quality test specimens suitable for reliable mechanical testing.
How does the mold improve cooling performance?
The mold uses specially designed shoulder bolts that create a passive cooling gap between the mold and the nozzle plate until the machine reaches full clamp force. This design improves thermal stability, reduces unwanted heat transfer, and helps shorten molding cycle times.
What materials can be molded with this tool?
The mold can be used with many common thermoplastic materials compatible with the APSX-PIM system, including ABS, PLA, polypropylene (PP), polyethylene (PE), nylon (PA), polycarbonate (PC), PETG, and other engineering plastics. Material selection should always follow the manufacturer's recommended processing conditions.
Who is this tensile test mold designed for?
The ASTM D638 Type IV Tensile Test Mold is ideal for research laboratories, universities, plastics manufacturers, material developers, quality control departments, engineering teams, and product development organizations that require standardized tensile specimens for mechanical testing.
Can this mold be used for material qualification?
Yes. The mold is specifically designed to produce repeatable ASTM D638 Type IV specimens for material qualification, process validation, quality assurance, and comparative testing of thermoplastic materials.
Is installation difficult?
No. The mold is designed for straightforward installation on the APSX-PIM machine. It includes all required mounting hardware, and Additive Plus provides installation guidance along with application support to help users begin molding quickly.
Can Additive Plus build custom injection molds?
Yes. In addition to standard ASTM molds, Additive Plus offers custom mold design, tooling development, prototype tooling, insert machining, and sample production services for customers with unique product or testing requirements.
Can I request a molding trial before purchasing custom tooling?
Yes. Additive Plus can perform sample molding trials using customer materials or custom tooling before production begins. This allows customers to evaluate molded parts, verify process parameters, and reduce development risk before investing in full-scale production.
Can I speak with an applications engineer before ordering?
Yes. Additive Plus provides direct access to experienced applications engineers who can answer questions about tooling, resin selection, process optimization, cycle times, machine compatibility, and custom molding solutions before you purchase.
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Order ASTM D638 Type IV Tensile Test Mold direct, or talk to materials engineer