---
title: "Vapor Smoothing PA12: Published Results | AMT PostPro"
description: "PA12 on PostPro vapor smoothing: compatibility, published elongation, dimensional, burst-pressure and skin-contact results, and PA12 parts in the field."
canonical: https://amtechnologies.com/community/guides/pa12-what-we-know/
updated: 2026-10-06
type: guide
---
Community guide Materials / PA12

# Vapor smoothing PA12: what AMT has published

PA12 is one of the most widely printed powder bed materials. It is listed as compatible on all four PostPro systems (SFX, SF2X, SF50 and SF100), with PostPro Pure and with FA326.

- By AMT Team
- Guide
- 1 min read
- Updated Oct 2026
- Sources[1,2,3,4,5,6,7]

## Published results on PA12

| Material and process | Result | Source |
| --- | --- | --- |
| PA12, voxeljet HSS | Elongation at break +38.1% (XY)[3]; dimensional change 0.39 mm (0.4%) | AMT whitepaper, Feb 2024 |
| PA2200, SLS | Burst pressure up to +7%[4]; maximum dimensional change 0.4% | AMT whitepaper, Jan 2024 |
| HP 3D HR PA 12, HP MJF, PostPro Pure | No reduction in strength or durability; no cytotoxic effects | AMT whitepaper, Jun 2025 |

## PA12 in the field

- **ABConcept** ran over 100 vapor smoothed HP MJF PA12 components through more than 2,450 km of the Rallye du Maroc (case study, Dec 2025).
- **Protolabs** produces flame-retardant parts in HP 3D HR PA 12 FR on HP MJF, vapor smoothed, with UL94 V-0 compliance (case study, Jun 2026).

Both have full case studies: [ABConcept](https://amtechnologies.com/resources/case-studies/3d-printed-rally-car-parts/) and [Protolabs](https://amtechnologies.com/resources/case-studies/flame-retardant-3d-printed-parts/).

## Grades

PA12 from different printers and suppliers is not all the same powder. AMT’s compatible materials lists name the grades that have been tested; see the [documents page](https://amtechnologies.com/resources/documents/).

Forum · Over to you

Which PA12 grades and printers do you smooth? Share results and photos, and questions about grades that are not on the list.

[Answer in the forum thread (opens the community forum in a new tab)](https://amtpostpro.discourse.group/t/vapor-smoothing-pa12-what-amt-has-published/54)

Next step

## See the price. Run the numbers. Hold the part.

List prices are public and the cost-per-part math is yours to check, with no email needed for either. The free benchmark puts your own parts, vapor smoothed, in your hands.

1. 01 Quote

   ### Build your quote

   Pick a system and its options and get an itemized total on screen, from AMT’s published list prices.

   [Build your quote](https://amtechnologies.com/quote/)
2. 02 ROI

   ### Calculate your ROI

   Compare your cost per part with manual finishing, using your own labor rate and volumes. Every assumption is editable.

   [Calculate ROI](https://amtechnologies.com/roi/)
3. 03 Benchmark

   ### Test your parts, free

   Ship us your parts with a prepaid label. We vapor smooth them and send them back with before-and-after photos and a benchmark report.

   [Test your parts, free](https://benchmarking.amtechnologies.com/submit?utm_source=amtechnologies.com&utm_medium=community-page&utm_campaign=site-2026&utm_content=pa12-what-we-know-decision)

   No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks[8]

Prices: AMT list prices, excluding tax and shipping; confirmed in your formal quote.

[Not sure which system? Help me choose](https://amtechnologies.com/configurator/)

## Sources

1. [Vapor smoothing: SF and X-series family page and SFX, SF2X, SF50, SF100 product pages](https://amtechnologies.com/products/vapor-smoothing/) · AMT · read Oct 6, 2026 · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sfx-desktop-vapor-smoothing-system/) · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf2x/) · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf50/) · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf100/)
2. [Vapor smoothing consumables: PostPro Pure (FA5802), FA326 and FA9202](https://amtechnologies.com/products/vapor-smoothing/consumables/) · AMT · read Oct 6, 2026
3. [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
4. [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
5. [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
6. [How vapor smoothing helps 3D-printed rally car parts perform in extreme racing conditions (ABConcept case study)](https://amtechnologies.com/resources/case-studies/3d-printed-rally-car-parts/) · AMT · Dec 10, 2025
7. [Flame-retardant 3D-printed parts with UL94 V-0 compliance (Protolabs case study)](https://amtechnologies.com/resources/case-studies/flame-retardant-3d-printed-parts/) · AMT · Jun 3, 2026
8. [PostPro benchmarking: send us your 3D printed parts](https://benchmarking.amtechnologies.com/) · AMT · read Oct 6, 2026