Formolene HJ6308: specs and equivalent grades
Formosa HDPE homopolymer for injection molded crates, totes and bins, made in Point Comfort, Texas. Published data, grades from other producers to ask about, and how to request a quote from one gaylord.
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The short answer
Formolene HJ6308 is a high density polyethylene (HDPE) injection molding resin from Formosa, listed under its HDPE homopolymer injection molding resins and made at Formosa Industries Corporation’s plant in Point Comfort, Texas. Formosa designs it for toughness and stiffness, especially at low temperatures, and suggests it for industrial crates, totes and bins. Published melt index is 8.2 g/10 min, measured at 190°C / 374°F, 2.16 kg, ASTM D1238, and density is 0.963 g/cm³ (ASTM D1505). Formosa states it meets FDA 21 CFR 177.1520. Grades to ask about include Formolene LH6008, Alathon M6580 and Marlex 9708. They are not identical, so compare the data sheets and run a trial before switching.
Also written as: Formosa HJ6308, FPC HJ6308, Formolene HJ 6308. We found no HJ6308U on Formosa’s current lists (November 2026). If your RFQ or label says HJ6308U, send us the label or COA; Formosa’s UV-stabilized crate grade on its current list is Formolene LH6008U. Quote the full code from your drawing or bag label.
Buying Formolene HJ6308: one gaylord to a railcar · supplier COA on every prime lot · access to 100+ partner warehouse locations · a polymer chemist checks the grade code before we quote · we aim to quote within one to three business days
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Formolene HJ6308 specs from the data sheet
Nominal values from Formosa’s Formolene HJ6308 data sheet (published 11/1/2019) and Formosa’s Formolene polyethylene product list. Formosa notes all properties were derived from compression molded specimens, may vary with operating conditions and additive packages, and are not specifications. The lot COA shows what you actually receive. Values only compare at the same test method and condition.
| Property | Value | Test method or note |
|---|---|---|
| Producer (brand owner) | Formosa Plastics Corporation, U.S.A. (Formolene trademark); made by Formosa Industries Corporation, Point Comfort, Texas | Formosa Formolene PE product list |
| Polymer | High density polyethylene, homopolymer | Listed by Formosa among its HDPE homopolymer injection molding resins |
| Process | Injection molding | Data sheet |
| Melt index | 8.2 g/10 min | 190°C / 374°F, 2.16 kg, ASTM D1238 |
| Density | 0.963 g/cm³ | ASTM D1505 |
| Tensile strength at yield | 4,400 psi (30 MPa) | ASTM D638 |
| Tensile elongation at break | 440% | ASTM D638 |
| Flexural modulus, 1% secant | 270,000 psi (1,900 MPa) | ASTM D790B |
| Flexural modulus, 2% secant | 230,000 psi (1,600 MPa) | ASTM D790B |
| ESCR | 3 h | ASTM D1693, Condition B, 10% Igepal, F50 |
| Notched Izod impact at -40°F | 0.89 ft-lb/in (47 J/m) | ASTM D256A |
| Additives | Antioxidant: yes. No UV stabilizer, antiblock or slip is listed. | Data sheet; product list |
| Food contact | Formosa states HJ6308 meets FDA 21 CFR 177.1520 for direct food contact. | Data sheet |
| Drying | Not published on the data sheet | HJ6308 sheet |
| Melt and mold temperature | Not published on the data sheet | HJ6308 sheet |
Source data sheets are listed at the bottom of this page. Confirm against the current sheet for your exact grade code and color.
The producer’s sheet gives no drying step; polyethylene does not normally need drying, but material moved from a cold warehouse into a warm plant can pick up surface condensation, so let it reach room temperature in the closed box before opening.
Grades to ask about instead of Formolene HJ6308
These grades from Formosa and other producers have similar published specs: unfilled HDPE for injection molding, melt index 8.0 to 8.2. None is a drop-in replacement: additive packages, flow at molding shear rates, color and approvals differ. If your part, drawing or customer approval names Formolene HJ6308, any change needs your approval and usually a trial.
| Grade | Producer | Melt flow | Density | Key property | How it compares |
|---|---|---|---|---|---|
| Formolene LH6008 | Formosa Plastics Corporation, U.S.A. | 8.0 g/10 min (190°C, 2.16 kg, ASTM D1238) | 0.965 g/cm³ (ASTM D1505) | Flexural modulus, 2% secant 225,000 psi (1,550 MPa) (ASTM D790B); tensile at yield 4,700 psi (32 MPa); ESCR 2 h (100% Igepal, 50°C, F50, ASTM D1693) | Close match. Formosa homopolymer injection resin for industrial crates, totes and bins and small appliances. Slightly lower melt index and slightly higher density. Its ESCR is measured in 100% Igepal, so do not compare it with HJ6308’s 10% Igepal figure. Formosa states it meets FDA 21 CFR 177.1520. A UV-stabilized version, LH6008U, has the same published values. Quote this alternative › |
| Alathon M6580 | LyondellBasell | 8.2 g/10 min (190°C, 2.16 kg, ASTM D1238) | 0.965 g/cm³ (23°C, ASTM D1505) | Flexural modulus, 1% secant 240,000 psi (1,650 MPa) and 2% secant 204,000 psi (1,410 MPa) (ASTM D790); notched Izod 0.68 ft-lb/in (36 J/m) at 23°C (ASTM D256) | Close match. Narrow molecular weight distribution homopolymer for cases, crates, trays, tote bins and open-head pails; LyondellBasell lists it for North America. Same melt index, slightly higher density. Its Izod is at 23°C and HJ6308’s at -40°F, so impact is not directly comparable. Regulatory details are in LyondellBasell’s Product Stewardship Bulletin. Quote this alternative › |
| Marlex 9708 | Chevron Phillips Chemical | 8.0 g/10 min (190°C, 2.16 kg, ASTM D1238) | 0.962 g/cm³ (ASTM D1505) | Flexural modulus, tangent 230,000 psi (1,580 MPa) (ASTM D790); notched Izod 0.8 ft-lb/in (40 J/m) at 73°F; ESCR under 10 h (Condition B, 100% Igepal, F50) | Close match on use. HDPE for injection molded crates, tote boxes and structural foam. CPChem’s 2021 data sheet calls it an ethylene homopolymer, but its August 2025 regulatory overview describes it as an ethylene-hexene copolymer, so confirm with CPChem if homopolymer matters for your part. Almost the same melt index and density. Stiffness is reported as tangent modulus, not secant, so the numbers do not line up directly. CPChem states FDA 21 CFR 177.1520(c) 3.2a, use conditions B through H. Quote this alternative › |
From each producer’s published data. Brand owners and grade names change; confirm on the current data sheet.
Typical uses for Formolene HJ6308
From Formosa’s HJ6308 data sheet and product list:
- Industrial crates
- Totes and bins
- Pallets (named in Formosa’s product list: “crates and pallets”)
What to check before you switch
- HJ6308U: we found no grade by that name on Formosa’s current HDPE lists or data sheet library. If your paperwork shows it, send the label or COA. For a UV-stabilized Formosa crate grade, ask about Formolene LH6008U, which is LH6008 with a UV stabilizer, not HJ6308.
- HJ6308 lists only an antioxidant. For crates or totes stored outdoors, ask about a UV-stabilized grade or a UV masterbatch; we offer custom compounding and color.
- ESCR is reported under different conditions: HJ6308 in 10% Igepal, LH6008 and Marlex 9708 in 100% Igepal. Ask for data at the same condition, or test your own parts. See environmental stress cracking.
- Low-temperature impact: HJ6308’s Izod is published at -40°F. If your crates see freezer or winter use, compare alternatives at the same temperature.
- Formosa’s values come from compression molded specimens. Molded crate properties will differ; judge by part tests.
- If your part needs food contact, ask for the producer’s regulatory letter for the exact grade before you rely on the data sheet statement.
- Compare melt flow, density and impact only at the same test condition and method (ASTM vs. ISO results differ). See melt flow index explained.
- Run a trial lot and check fill, warpage, cycle time and drop impact before you switch production. Our Dow DMDA-8007 NT 7 page covers another crate grade in the same melt index range.
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Buying Formolene HJ6308: price, lead time and lot size
- Lot size. From one gaylord to a railcar. See gaylord, LTL and truckload for typical weights per box.
- Where it ships from. We have access to 100+ partner warehouse locations. Material already in a partner warehouse usually moves sooner than a grade that has to come from the producer; your quote says which applies.
- Price. We do not publish prices because they move with feedstock, freight and order size. What moves your price most: lot size, color or UV package, ship-to region, and whether you need Formolene HJ6308 itself or can accept a matched alternative. See how resin is priced and the monthly market update.
- Paperwork. Supplier COA on every prime lot (what a COA shows). Ask for Formosa’s food-contact letter if your part needs one.
- Trying an alternative? Start with one gaylord as a trial lot, molded and checked before you commit a full release. Samples (~50 lb) are available upon credit approval.
- If Formolene HJ6308 itself is not available. Some branded grades are sold only through the producer’s own channels or go on allocation. If we cannot source it, we tell you, then quote a matched alternative with a side-by-side comparison.
Send the grade code, your annual volume and ship-to location. A polymer chemist checks it before we quote; we were founded by a family with 30+ years in the resin business. For several grades at once, use the resin RFQ template.
Trade names belong to their owners. ResinBridge is not affiliated with these producers; grade names are used only to identify the material. Data reflects published sheets as of November 2026.
Sources
- Formosa Formolene HJ6308 data sheet (PDF, published 11/1/2019)
- Formosa Formolene polyethylene product list (Formosa Industries Corporation, Point Comfort, Texas)
- Formosa Plastics USA Formolene polyethylene resins page (LH6008 and LH6008U listing)
- Formosa Formolene LH6008 data sheet (PDF)
- Formosa Formolene LH6008U data sheet (PDF)
- LyondellBasell Alathon M6580 product page
- LyondellBasell Alathon M6580 technical data sheet (PDF)
- Chevron Phillips Chemical Marlex 9708 data sheet (PDF, revised August 2021)
- Chevron Phillips Chemical Marlex 9708 Product Regulatory Overview (PDF, Revision 1, August 23, 2025)
Common questions
What is Formolene HJ6308?
Formolene HJ6308 is a high density polyethylene homopolymer for injection molding from Formosa, made at Formosa Industries Corporation’s plant in Point Comfort, Texas. Formosa designs it for toughness and stiffness, especially at low temperatures, and suggests it for industrial crates, totes and bins.
What is the melt index and density of Formolene HJ6308?
Melt index 8.2 g/10 min, measured at 190°C / 374°F, 2.16 kg, ASTM D1238, and density 0.963 g/cm³ (ASTM D1505), per Formosa’s data sheet.
Is there a Formolene HJ6308U?
We found no HJ6308U on Formosa’s current lists or in its data sheet library as of November 2026. Formosa’s UV-stabilized crate grade is Formolene LH6008U. If your paperwork says HJ6308U, send us the label or COA and we will check it.
What is equivalent to Formolene HJ6308?
Grades to ask about include Formolene LH6008, Alathon M6580 and Marlex 9708, all HDPE injection molding grades for crates and totes at a melt index of 8.0 to 8.2. None is identical; compare data sheets and run a trial, and get approval if your part names Formolene HJ6308.
Is Formolene HJ6308 food-contact compliant?
Formosa states that HJ6308 meets FDA 21 CFR 177.1520 for direct food contact. Ask for Formosa’s current regulatory letter for your exact use before you rely on it.
Can ResinBridge supply Formolene HJ6308?
We quote Formolene HJ6308 when our supply partners can source it. If they cannot, we say so up front and quote a matched alternative, named on the quote with its data sheet, so you can decide whether to trial it.
If your grade is not listed, tell us what you run. We source commodity, engineering and specialty resins.
Need Formolene HJ6308 or an alternative to qualify?
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ResinBridge is not an authorized distributor of Formolene; when we source Formolene HJ6308 through our supply network, we confirm lot origin and COA with your quote.
What to send for an accurate quote
- The grade name, from any supplier, or a data sheet
- Color (natural, black or a custom match)
- Fill type and percentage, if any
- Melt flow, if you know it
- Quantity for this order and what you use in a year
- Ship-to city and state or province
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