Material focus
HDPE selection, applications, and sibling resin routing on this page.
HDPE
HDPE Injection Molding: Properties, Applications and Design Guide
HDPE is the workhorse polyethylene for stiff-but-tough molded parts that must resist moisture and many household chemicals.
HDPE
When to specify HDPE
How procurement and design teams use HDPE on injection molded programs.
HDPE is the workhorse polyethylene for stiff-but-tough molded parts that must resist moisture and many household chemicals. Buyers choose it for caps , thin-walled containers, and outdoor components where PP is too flexible or ABS cost is unnecessary. Quote with the exact grade when you know it, or describe chemical exposure and impact needs so engineering can recommend a candidate. At NetProto, programs run from first-article validation through production on one hardened steel tool with no minimum order quantity. Upload CAD on the instant quote platform for DFM feedback before tooling release. For a more flexible polyethylene, see LDPE .
Key traits
Why buyers specify HDPE
Engineering and sourcing highlights. No NetProto processing numbers on this page.
Sourcing
Grade and compliance context travels with CAD on the instant quote platform.
Program fit
First articles through production on one steel tool, no MOQ.
NetProto platform
Instant CAD quoting and DFM feedback before tooling release.
Tooling lead time
Hardened steel tool build in about 10 business days on qualified programs (part complexity dependent).
Common grades
Common HDPE (High Density Polyethylene) grades by use case
Pick one of these on the instant quote, or name any other commercial grade in the RFQ notes.
| Use case | Example grade | Typical parts |
|---|---|---|
| General injection | Sabic M80064 | Electrical, chemical, and general industrial moldings |
| High rigidity household | LG LUTENE-H ME9180 | Household products, crates, and industrial parts |
| Crates and pallets | TAISOX 8050 | Crates, boxes, seats, and pallet components |
Applications
Where this resin shows up on BOMs
Typical molded parts and what to specify on the purchase order.
| Application | Why this resin | Specify on the PO |
|---|---|---|
| Bottle caps and closures | Good snap and living hinge options on copolymer grades | HDPE grade, color, food-contact statement if needed |
| Tanks and chemical containers | Strong chemical resistance vs many acids and bases | Resin grade + continuous service fluid |
| Outdoor yard and utility parts | UV-stable grades available; avoid assuming all HDPE is outdoor rated | UV grade callout or environment notes |
| Pipe fittings and conduit | Stiffness and chemical resistance. Confirm the pressure class on the supplier documents. | HDPE grade and the pressure class named by the buyer. |
RFQ
Ready to quote? Have this information ready
Prepare these details, then upload CAD on the instant quote platform.
State HDPE vs LDPE if you know the flexibility target.
Call out food or potable water contact so the right compliance documents can be requested from the resin supplier.
Note color: natural, black, or masterbatch with let-down ratio.
Commercial grade, or the use case to match (impact, stiffness, large part flow, food contact listed)
Expected annual volume (helps cavity and tool planning)
Optional: target piece-price band for sourcing discussions
Next step
Upload CAD for an instant quote
Grade not finalized? Note HDPE on the RFQ and attach environment notes.
Compare and explore
Related guides
Pairwise comparisons and sibling material pages.
Materials library
Browse all resin guides.
Materials library
PP vs PE
Packaging and container routing.
PP vs PE
Polypropylene
Living hinges and higher heat than PE.
Polypropylene
Reading a material datasheet
What the TDS (Technical Data Sheet) values mean for a molded part.
Reading a material datasheet
Specify resin grade on an RFQ
How to write grade, color, and fillers so the quote matches the part.
Specify resin grade on an RFQFAQ
HDPE injection molding FAQ
Is HDPE the same as MDPE or LDPE?
No. HDPE is stiffer; LDPE is softer and more flexible. Specify the family on the BOM.
Can HDPE parts be clear?
Most HDPE is opaque. For clarity look at PP random copolymer or PET, not HDPE.
What is the minimum order quantity for molded parts at NetProto?
NetProto has no minimum order quantity on molded parts from your production tool. Upload CAD on the instant quote platform to scope tooling and part pricing for your volume.
How do I quote this resin without a final grade selected?
List the resin family on the RFQ, attach environment and compliance notes, and upload CAD. At NetProto, engineers use DFM review to narrow grades before tooling release.
Next step
Quote HDPE parts with your CAD
Upload geometry and list HDPE or the target grade on the instant quote platform.