LEXAN 141R: specs and equivalent grades
SABIC polycarbonate (PC), medium viscosity, general purpose, with mold release. Published data, grades from other producers to ask about, and how to request a quote from one gaylord.
Updated October 2026
Request a QuoteThe short answer
LEXAN 141R is SABIC's polycarbonate (PC), medium viscosity, general purpose, with mold release, sold for injection molding. Published melt flow is 11 g/10 min, measured at 300°C / 572°F, 1.2 kg, ASTM D1238, and density is 1.20 g/cm³ (ISO 1183). Grades from other producers to ask about include Makrolon 2605 and CALIBRE 301-10. They are not identical, so compare the data sheets and run a trial before switching.
LEXAN 141R specs from the data sheet
Typical values from SABIC's published data sheet. 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) | SABIC | Data sheet |
| Polymer | Polycarbonate (PC), medium viscosity, general purpose, with mold release | |
| Process | Injection molding | |
| Melt flow | 11 g/10 min | 300°C / 572°F, 1.2 kg, ASTM D1238 |
| Density | 1.20 g/cm³ (ISO 1183) | |
| Melt volume rate (141R sheet), 300°C / 572°F, 1.2 kg | 12.0 cm³/10 min | ISO 1133 |
| Flexural modulus, 50 mm span | 2,340 MPa (339,000 psi) | ASTM D790 |
| Tensile strength at yield | 62.0 MPa (8,990 psi) | ASTM D638 |
| Notched Izod impact, 23°C / 73°F | 800 J/m (15 ft-lb/in) | ASTM D256 |
| HDT 0.45 MPa / 1.8 MPa, unannealed, 6.4 mm | 137°C / 279°F; 132°C / 270°F | ASTM D648 |
| Vicat softening temperature | 154°C / 309°F | ASTM D1525 |
| Light transmittance, 2.54 mm | 88 % | ASTM D1003 |
| Additives | Release agent (per the 2005 LEXAN 141R sheet) |
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 LEXAN 141R
These grades from other producers have similar published specs. 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 LEXAN 141R, any change needs your approval and usually a trial.
| Grade | Producer | Melt flow | Density | Key property | How it compares |
|---|---|---|---|---|---|
| Makrolon 2605 | Covestro | 12 cm³/10 min MVR (300°C / 572°F, 1.2 kg, ISO 1133) | 1.20 g/cm³ (ISO 1183) | Tensile modulus 2,400 MPa (ISO 527); HDT 1.8 MPa 125°C / 257°F | Easy release, release agent, injection; North America listed. Same MVR as LEXAN 141R. |
| CALIBRE 301-10 | Trinseo | 10 g/10 min (300°C / 572°F, 1.2 kg, ISO 1133) | 1.20 g/cm³ (ISO 1183) | Flexural modulus 2,400 MPa (ISO 178); notched Izod 90 kJ/m² (ISO 180/1A) | Release agent; North America listed. Confirm current CALIBRE availability with Trinseo. |
From each producer's published data. Brand owners and grade names change; confirm on the current data sheet.
Typical uses for LEXAN 141R
From SABIC's data sheet and published listings:
- Multi-purpose injection molded parts in transparent, translucent and opaque colors
- Appliances
- Automotive lighting
- Electrical and electronic parts
- Lighting
- Optical applications
What to check before you switch
- The Americas property data located are for LEXAN 141 (UL Prospector copy, last updated 9/29/2023); 141R is the release-agent version per a 2005 141R data sheet. Confirm with the supplier whether you are buying 141 or 141R, and the color code.
- Brand owner shown as SABIC on the current data sheet copy; confirm the producer name on the sheet you receive.
- Release agent, UV stabilization and color packages differ between PC grades of equal flow; specify them in the RFQ.
- Medical, optical and food-contact uses each need the producer's specific letter.
- 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 LEXAN 141R or an equivalent
Send us the grade name, your annual volume and ship-to location. A polymer chemist checks the data sheet and we quote LEXAN 141R where we can source it, or a qualified equivalent, saying clearly which one you would get. Orders start at one gaylord. For background on this resin family see Polycarbonate grades and buying guide; 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
- protolabs.com/media/hzhnbfyb/lexan-141.pdf
- rolec.com/fileadmin/Media/58/d3/Datenblatt_technoCASE_PC_LEXAN%2B141R_en.pdf
Common questions
What is LEXAN 141R?
LEXAN 141R is SABIC's polycarbonate (PC), medium viscosity, general purpose, with mold release, sold for injection molding.
What is the melt flow of LEXAN 141R?
11 g/10 min, measured at 300°C / 572°F, 1.2 kg, ASTM D1238, per the published data sheet.
What is equivalent to LEXAN 141R?
Grades from other producers to ask about include Makrolon 2605 and CALIBRE 301-10. None is identical; compare data sheets and run a trial, and get approval if your part names LEXAN 141R.
Is LEXAN 141R food-contact compliant?
SABIC's data sheet does not state food-contact status for this grade; ask for the producer's regulatory letter for the exact grade.
Can ResinBridge quote LEXAN 141R?
Yes. Send the grade name and volume. A polymer chemist checks it and we quote the grade where we can source it, or a qualified equivalent, and say which one. 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 LEXAN 141R or an equivalent?
A polymer chemist reviews every request, then matches your grade or finds a qualified equivalent 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 LEXAN 141R or a qualified equivalent
A polymer chemist checks the data sheet and tells you exactly what you would get before you order.
Request a QuoteNot sure which grade fits your part?
Send the grade you run now, or describe the part. A polymer chemist reviews every request.