ELEGOO Saturn 10-Inch PFA Release vs ELEGOO Mars 4/5 FEP Release (2026): Key Differences
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When you compare the elegoo 5pcs pfa film saturn vs 5pcs fep release film, you are looking at two distinct replacement options for resin 3D printing. Both packs contain five films designed to protect your printer’s LCD screen and ensure smooth part release. They share a focus on chemical resistance and UV stability. The main difference lies in the film material and the printer models they support. PFA films target larger 10-inch screens, while FEP films fit smaller 4 and 5 series printers.
Key differences
| Aspect | ELEGOO Saturn 10-Inch PFA Release Film 5-Pack | ELEGOO Mars 4/5 FEP Release Film 5-Pack |
|---|---|---|
| Release Film Type | PFA | FEP |
| UV Transmittance | 92% | 95% |
| Compatible Printers | Saturn 2, 3, 4, 4 Ultra | Mars 4, Mars 5, Mars 5 Ultra |
| Film Thickness | not listed | 0.15mm |
| Dimensions | not listed | 206*146mm |
Which one should you choose?
Choose ELEGOO Saturn 10-Inch PFA Release Film 5-Pack if
- You own a Saturn series printer with a 10-inch LCD screen.
- You prefer PFA material for its high temperature resistance.
Choose ELEGOO Mars 4/5 FEP Release Film 5-Pack if
- You use a Mars 4, Mars 5, or Mars 5 Ultra printer.
- You want a film with 95% UV transmittance for faster curing.
Verdict: Choose the PFA film if you print on larger Saturn models and need robust chemical resistance. Select the FEP film if you use smaller Mars printers and prioritize the highest listed UV light transmittance for speed.
PFA vs FEP Film Comparison
UV Transmittance
The ELEGOO Saturn 10-Inch PFA Release Film lists a 92% UV transmittance rate. This specification allows for faster and more even resin curing, which can lead to higher print speeds and success rates. In contrast, the ELEGOO Mars 4/5 FEP Release Film boasts a higher 95% UV light transmittance. This increased percentage ensures faster and more accurate curing of the resin. For you, this means the Mars film may slightly reduce layer exposure times compared to the Saturn film. Both films aim to improve print quality through efficient light transmission, but the Mars film holds a technical advantage in this specific metric.
Film Material
The primary difference lies in the polymer type used for each release film. The Saturn pack uses PFA film, which is noted for its exceptional resistance to corrosive chemicals and high temperatures. This material ensures reliable performance in demanding resin printing conditions. The Mars pack utilizes FEP film, which is described as wear-resistant and UV stable. While FEP does not degrade over time, the Saturn film’s PFA material offers superior chemical and thermal resistance. If your printing environment involves harsher chemicals or higher heat, the Saturn film’s material composition provides a distinct benefit for longevity and stability.
Film Dimensions
Physical size is critical for proper fit on your printer’s build platform. The Mars 4/5 FEP Release Film provides specific dimensions of 206 by 146 millimeters, with a thickness of 0.15 millimeters. This precise sizing ensures it fits the Mars 4, Mars 5, and Mars 5 Ultra models correctly. The Saturn PFA film data does not list exact millimeter dimensions, only that it is for 10-inch LCD printers like the Saturn 3 and 4 series. You must ensure the Saturn film matches your 10-inch screen size. The Mars film offers more explicit dimensional data for verification.
Surface Quality
Both films emphasize a smooth surface free of wrinkles, scratches, and bubbles. This quality is essential for ensuring the resin adheres evenly to the build plate and releases cleanly after curing. The Saturn PFA film highlights a flawless surface that minimizes print failure risks. Similarly, the Mars FEP film features a smooth surface that prevents resin sticking and ensures high-quality finishes. Both products claim excellent release performance, allowing for easy part removal without damage. In terms of surface finish and release ease, the data presents them as equal in their ability to support high-quality prints.
Printer Compatibility
Compatibility determines which printer you can use each film with. The Saturn PFA film is designed for 10-inch LCD printers, specifically listing the Saturn 2, 3, 4, and 4 Ultra series. The Mars FEP film is strictly for the Mars 4, Mars 5, and Mars 5 Ultra printers, which use smaller screens. You cannot swap these films between these distinct printer lines due to the size difference between 10-inch and smaller LCD panels. Your choice is entirely dependent on your specific printer model. Each film is optimized for its respective printer family, ensuring a proper fit.
Which release film fits your printer
Saturn 2, 3, 4, or 4 Ultra owners
This pack contains PFA films sized for Saturn printers. The 92% UV transmittance ensures even curing across your large build volume. The smooth surface prevents wrinkles and bubbles. It resists corrosive chemicals and high temperatures, protecting your LCD screen during demanding prints. This is the correct fit for your machine.
Mars 4, 5, or 5 Ultra owners
This pack includes FEP films measuring 206 by 146 millimeters. The 0.15 millimeter thickness is specific to Mars printers. With 95% UV transmittance, it cures resin quickly and accurately. The wear-resistant and UV-stable material prevents degradation. It offers easy part release without damage, matching the exact dimensions required for your device.
Users prioritizing maximum UV light transmission
The Mars 4/5 FEP film offers 95% UV transmittance. This is higher than the Saturn PFA film’s 92% rating. Higher transmission allows for faster and more accurate resin curing. You get quicker print times and potentially higher success rates. If UV efficiency is your main concern, this film provides the superior specification for your workflow.
The products compared
ELEGOO Saturn 10-Inch PFA Release Film 5-Pack
Best for: Saturn 3, 4, and 4 Ultra printers
- Dimensions
- 273x176mm
- Release Film Type
- PFA
- Film Thickness
- 0.127mm
- Printing Technology
- Resin
- Resolution
- 8K, 16K
View on Amazon: ELEGOO Saturn 10-Inch PFA Release Film 5-Pack Affiliate link
This is a pack of five PFA release films designed for ELEGOO Saturn 2, 3, 4, and 4 Ultra printers. The transparent film offers 92% UV transmittance for faster curing and even resin exposure. Its smooth, non-stick surface minimizes wrinkles and bubbles, which helps prevent print failures. The material resists corrosive chemicals and high temperatures. It suits users seeking reliable part release and consistent print quality for 10-inch LCD resin printers.
Pros
- Includes 5 transparent PFA films
- 92% UV transmittance for faster curing
- Smooth surface reduces wrinkles and bubbles
- Resists corrosive chemicals and high heat
Cons
- Specific to 10-inch Saturn models
- Limited to 5 pieces per pack
- Requires compatible Saturn 3D printer
Good fit if
- You own a Saturn 3, 4, or 4 Ultra printer
- You want faster resin curing speeds
- You need reliable chemical resistance
Skip if
- You use a Mars 4 or Mars 5 printer
- You prefer FEP film material
- You need films for smaller screens
Verdict: ELEGOO Saturn PFA Release Film provides high UV transmittance and chemical resistance for Saturn users. It is a practical replacement for those needing durable parts release on 10-inch LCD printers.
ELEGOO Mars 4/5 FEP Release Film 5-Pack
Best for: Mars 4/5 users using FEP film
- Dimensions
- 206*146mm
- Release Film Type
- FEP
- Film Thickness
- 0.15mm
View on Amazon: ELEGOO Mars 4/5 FEP Release Film 5-Pack Affiliate link
This pack includes five FEP release films designed for the ELEGOO Mars 4, Mars 5, and Mars 5 Ultra. The films measure 206 by 146 millimeters with a thickness of 0.15 millimeters. They offer 95% UV light transmittance for faster curing. The smooth, non-stick surface helps prevent resin adhesion and ensures easy model removal. This set suits users who prefer the FEP material type for their resin printing needs.
Pros
- Includes 5 replacement films for cost-effective maintenance
- 95% UV light transmittance for accurate curing
- 0.15mm thickness balances durability and flexibility
- Smooth surface minimizes wrinkles and bubbles
- Chemical and wear-resistant material
Cons
- Uses FEP material instead of the newer PFA option
- Limited to compatibility with Mars 4 and 5 series printers
- No included application tools or squeegees
Good fit if
- You own an ELEGOO Mars 4 or Mars 5 printer
- You prefer the standard FEP film material
- You want a 5-pack for long-term supply
Skip if
- You use a Saturn series printer requiring PFA film
- You need films for the Mars 4 Ultra model
- You prefer PFA material for its longer lifespan
Verdict: ELEGOO 5-Pack FEP Film for Mars 4/5 provides reliable replacement films with high UV transmittance for Mars 4 and 5 series users. It is a practical supply for those who stick with FEP material.
Specifications side by side
| Spec | ELEGOO Saturn 10-Inch PFA Release Film 5-Pack | ELEGOO Mars 4/5 FEP Release Film 5-Pack |
|---|---|---|
| Dimensions | 273x176mm | 206*146mm |
| Release Film Type | PFA | FEP |
| Film Thickness | 0.127mm | 0.15mm |
| Printing Technology | Resin | not stated |
| Resolution | 8K, 16K | not stated |
| Size | Saturn 3/4/4 Ultra/4 Ultra 16K/2/8K-5PCS | S-5PCS for Mars 4/5/5 Ultra |
| Color | Transparent | Clear |
Frequently asked questions
Can I use Saturn PFA film on my Mars 4 or 5 printer?
No. The Saturn PFA film is sized specifically for 10-inch LCD screens found on Saturn 3, 4, and 4 Ultra models. Your Mars 4 or 5 printer requires the smaller FEP film. Using the wrong size will not cover the screen properly and may cause print failures or damage.
What is the size difference between the Saturn and Mars release films?
The Saturn film is designed for a 10-inch diagonal screen area. The Mars film is significantly smaller, measuring 10 inches in length and 7.44 inches in width. This size difference ensures the film fits the specific build plate dimensions of each printer series without excess material or gaps.
Is PFA film better than FEP film for resin printing?
PFA offers higher chemical resistance and durability than FEP. It maintains its transparency and smoothness longer under UV light. However, PFA is stiffer and harder to install. FEP is more flexible and easier to mount but may degrade faster with repeated use and chemical exposure.
Do both packs include five films?
Yes. Both the Saturn 10-Inch PFA pack and the Mars 4/5 FEP pack contain five films each. This quantity provides a standard replacement supply for routine maintenance, allowing you to swap films when they become scratched or cloudy without needing to order additional items immediately.
Will the Saturn film work with the Saturn 4 Ultra 16K?
Yes. The Saturn PFA film is listed as compatible with the Saturn 4 Ultra 16K. It is also suitable for the Saturn 2, 3, and 4 models. Ensure your printer uses the standard 10-inch LCD screen format for this film to fit correctly.
What color are the release films?
The Saturn PFA film is transparent. The Mars FEP film is clear. Both colors allow UV light to pass through effectively for curing resin. The transparency ensures you can monitor the print process and check for adhesion issues without removing the film.