--- title: "Vapor Smoothing Whitepapers: Test Data | AMT PostPro" description: "Vapor smoothing test data by material and printer: PA12, PA11, TPU, TPA and PP with HP, BASF, Evonik, Stratasys, voxeljet and more. Free PDFs." canonical: https://amtechnologies.com/resources/whitepapers/ updated: 2026-10-06 type: resources --- Resources · Whitepapers # Test data, material by material Studies by AMT with BASF Forward AM, HP, Evonik, Arkema, Ricoh, Formlabs, Stratasys, voxeljet and Hansgrohe: what vapor smoothing does to surface roughness, mechanical properties and dimensions, material by material. Every whitepaper is a free PDF: fill in a short form and it opens. - 13.42 → 1.18 µm[1] surface roughness, BASF Ultrasint TPU01 - +38.1% (XY)[2] elongation at break, voxeljet HSS PA12 - ≤ 0.4%[2] dimensional change, voxeljet HSS PA12 - up to +7%[3] burst pressure, SLS PA2200 ## All whitepapers - Whitepaper HP Multi Jet Fusion ## [HP MJF parts smoothed with FA5802 (Pure)](https://amtechnologies.com/resources/whitepapers/vapor-smoothing-of-hp-multi-jet-fusion-mjf-parts-with-amts-sustainable-postpro-pureconsumable/) No cytotoxic effects and no loss of strength[4] With HP Jun 2025 - Whitepaper Stratasys SAF ## [Stratasys SAF PA12 with FA5802 (Pure)](https://amtechnologies.com/resources/whitepapers/vapor-smoothing-stratasys-saf/) Smoother surfaces, increased impact strength, dimensional accuracy maintained[5] With Stratasys Mar 2025 - Whitepaper voxeljet High Speed Sintering (HSS) ## [voxeljet HSS PA12](https://amtechnologies.com/resources/whitepapers/vapor-smoothing-voxeljets-hss-pa12-with-amt-postpro/) Elongation at break +38.1% (XY)[2] With voxeljet Feb 2024 - Whitepaper SLS ## [SLS PA2200, with Hansgrohe](https://amtechnologies.com/resources/whitepapers/performance-improvements-of-vapour-smoothed-sls-pa2200-parts/) Burst pressure up to +7%[3] With Hansgrohe Jan 2024 - Whitepaper Formlabs SLS ## [Formlabs SLS powders](https://amtechnologies.com/resources/whitepapers/enhancing-the-surface-quality-of-sls-3d-printed-parts-with-vapor-smoothing/) Up to 81% lower surface roughness, consistent semi-glossy finish[6] With Formlabs Oct 2023 - Whitepaper HP Multi Jet Fusion (5200 series) ## [BASF Ultrasint TPU01](https://amtechnologies.com/resources/whitepapers/surface-enhancement-of-ultrasint-tpu01-parts-by-postpro-vapor-smoothing/) Surface roughness 13.42 → 1.18 µm[1] With BASF Forward AM Nov 2022 - Whitepaper HP Multi Jet Fusion 4200 ## [HP High Reusability PA12](https://amtechnologies.com/resources/whitepapers/automated-finishing-technology-for-post-processing-mjf-parts/) No loss in tensile strength; at most 0.4% dimensional change[7] With HP Nov 2022 - Whitepaper SLS ## [Arkema Rilsan PA11, SLS](https://amtechnologies.com/resources/whitepapers/sls-printed-nylon-11-parts/) Higher elongation at break and break stress; tensile strength and modulus unchanged[8] With Arkema Nov 2022 - Whitepaper HP Multi Jet Fusion 4200 ## [Evonik TPA elastomer](https://amtechnologies.com/resources/whitepapers/improving-evonik-tpa-part-properties-with-postpro-vapor-smoothing/) Better tear strength and compression set; better color retention under UV[9] With Evonik Nov 2022 - Whitepaper SLS (RICOH AMS5500P) ## [Ricoh polypropylene, SLS](https://amtechnologies.com/resources/whitepapers/new-process-to-smooth-polypropylene-3d-printed-parts/) About 95% lower surface roughness[10] With Ricoh Nov 2022 - Whitepaper Powder bed fusion ## [BASF Ultrasint PP](https://amtechnologies.com/resources/whitepapers/postpro-vapor-smoothing-ultrasint-pp-parts-to-unlock-new-potentials/) Surface roughness from 11.04 µm to 1.45 µm[11] With BASF Forward AM Sep 2022 Whitepapers published before October 2024 carry a date badge; several of them tested PostPro3D, the earlier generation of AMT’s automated vapor smoothing systems. For which grades are approved today, see the [compatible materials lists](https://amtechnologies.com/resources/documents/). Test your parts ## Send us a part. See it smoothed. We vapor smooth your own parts and send them back with the results. No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks[12] [Test your parts, free](https://amtechnologies.com/test-your-parts/) [See the systems](https://amtechnologies.com/products/vapor-smoothing/) ## Sources 1. [Ultrasint TPU01 enhancement with PostPro vapor smoothing (whitepaper)](https://amtechnologies.com/resources/whitepapers/surface-enhancement-of-ultrasint-tpu01-parts-by-postpro-vapor-smoothing/) · AMT · Nov 7, 2022 2. [Vapor smoothing voxeljet's HSS PA12 with AMT PostPro (whitepaper)](https://amtechnologies.com/resources/whitepapers/vapor-smoothing-voxeljets-hss-pa12-with-amt-postpro/) · AMT · Feb 6, 2024 3. [Performance improvements of vapor smoothed SLS PA2200 parts (whitepaper)](https://amtechnologies.com/resources/whitepapers/performance-improvements-of-vapour-smoothed-sls-pa2200-parts/) · AMT · Jan 8, 2024 4. [Vapor smoothing of HP MJF parts with sustainable PostPro Pure consumable (whitepaper)](https://amtechnologies.com/resources/whitepapers/vapor-smoothing-of-hp-multi-jet-fusion-mjf-parts-with-amts-sustainable-postpro-pureconsumable/) · AMT · Jun 20, 2025 5. [Vapor smoothing for Stratasys SAF: process insights (whitepaper)](https://amtechnologies.com/resources/whitepapers/vapor-smoothing-stratasys-saf/) · AMT · Mar 19, 2025 6. [Formlabs and AMT: surface quality improvement of SLS parts using vapor smoothing (whitepaper)](https://amtechnologies.com/resources/whitepapers/enhancing-the-surface-quality-of-sls-3d-printed-parts-with-vapor-smoothing/) · AMT · Oct 6, 2023 7. [Automated surface finishing for HP High Reusability PA12 (whitepaper)](https://amtechnologies.com/resources/whitepapers/automated-finishing-technology-for-post-processing-mjf-parts/) · AMT · Nov 7, 2022 8. [Improving SLS nylon 11 parts with vapor smoothing (whitepaper)](https://amtechnologies.com/resources/whitepapers/sls-printed-nylon-11-parts/) · AMT · Nov 7, 2022 9. [Evonik TPA: improving part properties with vapor smoothing (whitepaper)](https://amtechnologies.com/resources/whitepapers/improving-evonik-tpa-part-properties-with-postpro-vapor-smoothing/) · AMT · Nov 7, 2022 10. [RICOH polypropylene: enhancing polypropylene parts with vapor smoothing (whitepaper)](https://amtechnologies.com/resources/whitepapers/new-process-to-smooth-polypropylene-3d-printed-parts/) · AMT · Nov 7, 2022 11. [Enhancing Ultrasint PP parts with vapor smoothing (whitepaper)](https://amtechnologies.com/resources/whitepapers/postpro-vapor-smoothing-ultrasint-pp-parts-to-unlock-new-potentials/) · AMT · Sep 24, 2022 12. [PostPro benchmarking: send us your 3D printed parts](https://benchmarking.amtechnologies.com/) · AMT · read Oct 6, 2026