ABS vs. PETG

Attribute	ABS	PETG
Strength	High	High
Flexibility	Low	High
Impact Resistance	High	High
Temperature Resistance	Low	High
Chemical Resistance	Low	High

When it comes to 3D printing, choosing the right filament material is crucial for achieving the desired results. Two popular options in the market are ABS (Acrylonitrile Butadiene Styrene) and PETG (Polyethylene Terephthalate Glycol). Both materials have their own unique attributes and characteristics that make them suitable for different applications. In this article, we will compare the key features of ABS and PETG to help you make an informed decision for your next 3D printing project.

Strength and Durability

ABS is known for its strength and durability, making it a popular choice for functional parts that require impact resistance. It has a higher tensile strength compared to PETG, which makes it ideal for applications where the printed parts will be subjected to mechanical stress. On the other hand, PETG is also a strong material but is more flexible than ABS. This flexibility can be advantageous in certain applications where a bit of give is needed to prevent breakage.

Printability

ABS and PETG have different printing characteristics that can affect the overall printing experience. ABS has a higher printing temperature compared to PETG, which can make it more challenging to work with for beginners. It also tends to warp more easily, especially if not printed on a heated bed. On the other hand, PETG is easier to print with due to its lower printing temperature and reduced warping tendencies. This makes it a more user-friendly option for those new to 3D printing.

Surface Finish

When it comes to surface finish, ABS and PETG have distinct differences. ABS has a glossy finish when printed, which can give the final part a polished look. However, ABS is prone to layer adhesion issues, which can result in a rough surface finish if not properly calibrated. PETG, on the other hand, has a more matte finish compared to ABS. It also has better layer adhesion, resulting in smoother and more consistent surface finishes.

Chemical Resistance

ABS and PETG have different levels of chemical resistance, which can be an important factor depending on the intended use of the printed part. ABS is resistant to a wide range of chemicals, making it suitable for applications where exposure to harsh chemicals is a concern. On the other hand, PETG has limited chemical resistance and may degrade when exposed to certain solvents. It is important to consider the chemical environment in which the printed part will be used when choosing between ABS and PETG.

Environmental Impact

Another important factor to consider when choosing between ABS and PETG is their environmental impact. ABS is a petroleum-based plastic, which means it is not biodegradable and can contribute to environmental pollution. On the other hand, PETG is a more environmentally friendly option as it is recyclable and can be easily processed into new filament. If sustainability is a priority for your 3D printing projects, PETG may be the better choice.

Cost

Cost is often a deciding factor when choosing between ABS and PETG for 3D printing. ABS is generally more affordable than PETG, making it a budget-friendly option for those looking to keep costs low. However, the cost difference may vary depending on the brand and quality of the filament. It is important to consider both the upfront cost of the filament and the long-term durability of the printed parts when making a decision based on cost.

Conclusion

In conclusion, both ABS and PETG have their own unique attributes and characteristics that make them suitable for different applications in 3D printing. ABS is known for its strength and durability, while PETG offers ease of printing and better surface finish. Consider factors such as strength, printability, surface finish, chemical resistance, environmental impact, and cost when choosing between ABS and PETG for your next 3D printing project. Ultimately, the best choice will depend on your specific requirements and preferences.