Bayblend T65 XF: specs and equivalent grades
Covestro high-flow PC/ABS blend with a Vicat (B120) of 120°C. Published data, grades to ask about, and how to request a quote from one gaylord.
Request a QuoteThe short answer
Bayblend T65 XF is Covestro's high-flow PC/ABS blend with a Vicat softening temperature (B120) of 120°C, sold for injection molding; Covestro's product page describes it as high flowability; older data sheets add "improved flow compared with T65". Published melt volume rate is 18 cm³/10 min, measured at 260°C / 500°F, 5 kg, ISO 1133, and density is 1.13 g/cm³ (ISO 1183). Grades to ask about include Wonderloy PC-345 and Wonderloy PC-365 from Chi Mei, and Covestro's higher-heat Bayblend T85 XF. They are not identical, so compare the data sheets and run a trial before switching.
Buying Bayblend T65 XF: one gaylord to a railcar · supplier COA on every prime lot · ships from 22+ partner warehouse locations · a polymer chemist checks the grade code before we quote · we aim to quote within one to three business days
Have a part number or drawing callout?
Paste it as written. A polymer chemist will tell you which grade it calls for, suggest equivalents and quote it by email.
Bayblend T65 XF specs from the data sheet
Typical values from Covestro's published product data. Typical values 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) | Covestro | Product data page |
| Polymer | PC/ABS blend, high flow, Vicat B120 120°C | |
| Process | Injection molding | |
| Melt flow | MVR 18 cm³/10 min | 260°C / 500°F, 5 kg, ISO 1133 |
| Density | 1.13 g/cm³ (1,130 kg/m³, ISO 1183) | |
| Melt viscosity | 200 Pa·s | 260°C, 1,000 s⁻¹, ISO 11443 |
| Tensile modulus | 2,350 MPa (341,000 psi) | ISO 527 |
| Yield stress / yield strain | 54 MPa (7,830 psi) / 4.4 % | ISO 527 |
| Flexural modulus / flexural strength | 2,350 MPa (341,000 psi) / 84 MPa (12,200 psi) | ISO 178 |
| Notched Izod impact, 23°C / -30°C | 48 kJ/m² / 35 kJ/m² | ISO 180/A |
| Notched Charpy impact, 23°C / -30°C | 50 kJ/m² / 36 kJ/m² | ISO 179/1eA |
| HDT 1.8 MPa / 0.45 MPa | 102°C / 216°F; 122°C / 252°F | ISO 75 |
| Vicat softening temperature, 50 N | 118°C / 244°F (50°C/h); 120°C / 248°F (120°C/h) | ISO 306 |
| Mold shrinkage | 0.50–0.70 % | ISO 294-4, 60×60×2 mm |
| Flammability | UL 94 HB at 0.85 mm | UL 94 (as listed by Covestro) |
| Drying / melt temperature | 95–110°C (203–230°F) for 4 h, max 0.02 % moisture / 240–270°C (464–518°F) | Covestro processing data |
| Automotive specifications | A 2023 distributor copy (Formerra) lists Ford WSS-M4D684-B1 and WSS-M4D924-B1, GM GMW15581P-ABS+PC-T2 and -T5, and GM QK 000195 Type B and QK 002412, some for color 901510 Black only | Confirm the current list with Covestro |
| Food contact | Covestro states the product is not intended for regulated uses such as food contact, medical devices or toys without its prior written approval. |
Source data sheets are listed at the bottom of this page. Confirm against the current sheet for your exact grade code and color.
Grades to ask about instead of Bayblend T65 XF
These grades have similar published specs. Two are from Chi Mei; the third is Covestro's own higher-heat sister grade. None is a drop-in replacement: blend ratio, additive packages, color and approvals differ. If your part, drawing or customer approval names Bayblend T65 XF, any change needs your approval and usually a trial.
| Grade | Producer | Melt flow | Density | Key property | How it compares |
|---|---|---|---|---|---|
| Wonderloy PC-345 | Chi Mei | Not published on the sheet | Specific gravity 1.1 (ASTM D792) | Notched Izod 9.15 ft-lb/in (about 490 J/m) at 3.2 mm (ASTM D256); Vicat 125°C (ASTM D1525, 1 kg); HDT 95°C unannealed (ASTM D648); UL 94 HB at 1.5 and 3.0 mm | Partial match. General-purpose, high-flow PC/ABS. The Chi Mei sheet shows no melt flow, so ask for one or compare flow in a trial. Expect imported supply; confirm origin. Quote this alternative › |
| Wonderloy PC-365 | Chi Mei | Not published on the sheet | Specific gravity 1.13 (ASTM D792) | Notched Izod 10.7 ft-lb/in (about 570 J/m) at 3.2 mm (ASTM D256); Vicat 136°C (ASTM D1525, 1 kg); HDT 106°C unannealed (ASTM D648); UL 94 HB at 1.5 and 3.0 mm | Partial match. Chi Mei lists it as high heat, high impact. Its heat values are ASTM (Vicat at 1 kg), so they do not rank directly against T65 XF and T85 XF; compare in a trial. No published melt flow; imported supply. Quote this alternative › |
| Bayblend T85 XF | Covestro (same producer) | MVR 19 cm³/10 min (260°C / 500°F, 5 kg, ISO 1133) | 1.14 g/cm³ (ISO 1183) | Vicat B120 130°C; HDT 107°C at 1.8 MPa (ISO 75); notched Charpy 50 kJ/m² at 23°C (ISO 179/1eA); UL 94 HB at 0.85 mm | Not another producer: Covestro's higher-heat version, with similar flow and impact. Ask about it if the part runs hot. Melt temperature range is higher (260–280°C). Quote this alternative › |
From each producer's published data. Brand owners and grade names change; confirm on the current data sheet.
Typical uses for Bayblend T65 XF
From Covestro's product data and published listings:
- Injection-molded PC/ABS parts that need high flow (Covestro describes it as high flowability)
- Automotive parts: a distributor copy of the sheet lists Ford and GM material specifications
- Parts that need PC/ABS impact at low temperature: 36 kJ/m² notched Charpy at -30°C
What to check before you switch
- Automotive approvals are grade, color and sometimes plant specific. If your part is released to a Ford or GM spec under T65 XF, a substitute needs that OEM's approval, not just similar data.
- Regulated uses: Covestro's product page says T65 XF needs Covestro's written approval for food contact, medical or toy applications.
- The Chi Mei sheets for PC-345 and PC-365 are ASTM and show no melt flow; Covestro publishes ISO data. Vicat on the Chi Mei sheets is run with a 1 kg load, so it does not compare directly with Covestro's 50 N Vicat B.
- Heat class: T65 XF has a Vicat B120 of 120°C; T85 XF is 130°C. Pick by the part's service temperature, not by name.
- PC/ABS must be dry: Covestro lists 95–110°C for 4 hours to 0.02 % moisture. See our resin drying guide and PC vs. PC/ABS.
- Compare melt flow, density and impact only at the same test condition and method (ASTM vs. ISO results differ).
- Ask for the producer's food-contact or regulatory letter for the exact grade if the part needs one.
- Run a trial lot and check shrinkage, cycle time and appearance before you switch production.
Buying Bayblend T65 XF: 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. 22+ 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, ship-to region, and whether you need Bayblend T65 XF 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 the producer’s regulatory letter or UL file if your part needs them.
- Trying an alternative? Start with one gaylord as a trial lot, molded and checked before you commit a full release.
- If Bayblend T65 XF 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 have been in the resin business for 30+ years. 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 October 2026.
Sources
- Covestro Bayblend T65 XF product data
- Bayblend T65 XF data sheet, Formerra 2023 (Protolabs, PDF)
- Covestro Bayblend T85 XF product data
- Chi Mei Wonderloy PC-345 data sheet (PDF)
- Chi Mei Wonderloy PC-365 data sheet (PDF)
Common questions
What is Bayblend T65 XF?
Bayblend T65 XF is Covestro's high-flow PC/ABS blend with a Vicat softening temperature (B120) of 120°C, sold for injection molding.
What is the melt flow of Bayblend T65 XF?
MVR 18 cm³/10 min, measured at 260°C / 500°F, 5 kg, ISO 1133, per Covestro's published data.
What is equivalent to Bayblend T65 XF?
Grades to ask about include Chi Mei Wonderloy PC-345 and PC-365, and Covestro's higher-heat Bayblend T85 XF. None is identical; compare data sheets and run a trial, and get approval if your part names Bayblend T65 XF.
Is Bayblend T65 XF food-contact compliant?
Covestro states the product is not intended for regulated uses such as food contact, medical devices or toys without its prior written approval. Ask for a letter for your exact use.
Can ResinBridge quote Bayblend T65 XF?
We quote Bayblend T65 XF 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. We quote Bayblend T65 XF where we can source it, or a matched alternative, and say clearly which one you would get. Orders start at one gaylord; U.S. and Canada only.
If your grade is not listed, tell us what you run. We source commodity, engineering and specialty resins.
Need Bayblend T65 XF or an equivalent?
A polymer chemist reviews every request, then matches your grade or finds a matched alternative and prices it.
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
Quote Bayblend T65 XF or a matched alternative
A polymer chemist checks the data sheet and tells you exactly what you would get before you order.
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