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- Validated cure profile + datasheet for the SLA systems we support
- Mutual NDA before any file or spec review
Materials, Engineering, Manufacturing, Resin 3D Printing Materials, SLA 3D Printing Materials · SLA
KS608A UV SLA Resin – High Accuracy, Toughness & Low Shrinkage for 3D Printing
KS608A is a tough, heat- and moisture-resistant UV SLA resin for accurate, durable parts — ABS-like finish, low shrinkage and low yellowing, with a validated cure profile in every order. Supplied in a 10 kg (22 lb) container.
- ✓ Tough, ABS-like mechanicals — 25–30 MPa tensile, 58–70 J/m notched Izod, 12–20% elongation
- ✓ Heat & moisture resistant — HDT 58–68°C, Tg 55–70°C for warm functional testing
- ✓ Runs on any 405 nm SLA (desktop or large-format) with the included cure profile
- ✓ In US stock · ships from Los Angeles in 1–2 business days · datasheet included
$670
Price held 7 days after order.
NDA standard
Ships in 1–2 business days
What your process engineer actually checks
What your process engineer actually checks
Validated, load-and-print cure profiles
Every KS608A order ships with a tested exposure/cure profile for the SLA systems we support and a full datasheet — viscosity, cure energy, mechanicals, HDT. Dial the build in once, then reorder the same chemistry.
A materials engineer on the line
Questions on post-cure schedule, elongation, yellowing, machinability, or vacuum-casting masters? A materials engineer answers directly — most replies under 4 hours, NDA standard.
About this product
KS608A is a tough, heat- and moisture-resistant UV SLA resin for accurate, durable parts. It carries the accuracy and convenience of the standard KS408A resin but is significantly stronger and holds higher temperatures — with a light-yellow, ABS-like finish. It runs on laser-based (405 nm) SLA systems — desktop or large-format — and is built for functional prototypes, concept models, low-volume production, and vacuum-casting master patterns across automotive, aerospace, architecture, and consumer-electronics work. Supplied in a 10 kg (22 lb) container.
Why engineers choose KS608A
Four things product-design and prototyping teams verify before standardizing a tough SLA resin.
Tough, ABS-like mechanicals
25–30 MPa tensile, 65–74 MPa flexural, 58–70 J/m notched Izod and 12–20% elongation. Parts survive snap-fits, functional testing and light production handling, with the look and feel of ABS at SLA tolerances.
Heat & moisture resistance
HDT 58–68°C (0.46 MPa) and 55–70°C Tg hold shape under warm assembly and functional testing, with improved dimensional retention in humid conditions versus standard SLA resin.
Accuracy with low shrinkage
A stable, well-characterized cure (Dp 0.135–0.155 mm, Ec 9–12 mJ/cm²) with minimal shrinkage and strong dimensional stability — for tight-tolerance prototypes and repeatable fit checks.
Machinable & casting-ready
Machines cleanly and takes finishing with minimal effort — a proven master pattern for vacuum casting. Light-yellow, ABS-like appearance and a long shelf life in the machine.
How we ship it
Every order arrives as a working process, not just a bottle — profiled, batch-checked and documented.
Step 01
Validated cure profile
A tested exposure and cure profile for the SLA systems we support, so you dial the build in once and reorder the same chemistry.
Step 02
Batch-checked before dispatch
Viscosity and cure energy verified against the KS608A datasheet on every batch — reorders behave the same, run after run.
Step 03
Datasheet + engineer on file
The full mechanical and optical datasheet ships in every order, and a materials engineer is on call for post-cure and application questions.
Printer compatibility
- Compatible systems: laser-based (405 nm) SLA (stereolithography) systems — desktop and large-format. Confirm your printer’s wavelength with our engineers if you’re unsure.
- Pack size: supplied in a 10 kg (22 lb) container.
- Color: light yellow (tough).
- Ships with: a validated exposure/cure profile for the SLA printers we support, plus the full datasheet.
- Unlisted printer? Our materials engineers help you dial in exposure and post-cure.
Technical specifications
| Property | Test method | Value |
|---|---|---|
| Appearance / color | — | Light yellow |
| Viscosity | @ 28°C | 355–455 cps |
| Liquid density | @ 25°C | 1.11–1.14 g/cm³ |
| Penetration depth (Dp) | — | 0.135–0.155 mm |
| Critical exposure (Ec) | — | 9–12 mJ/cm² |
| Build layer thickness | — | 0.05–0.15 mm |
| Hardness, Shore D | ASTM D2240 | 76–82 |
| Tensile strength | ASTM D638 | 25–30 MPa |
| Tensile modulus | ASTM D638 | 2,160–2,360 MPa |
| Elongation at break | ASTM D638 | 12–20% |
| Flexural strength | ASTM D790 | 65–74 MPa |
| Flexural modulus | ASTM D790 | 2,650–2,760 MPa |
| Impact, notched Izod | ASTM D256 | 58–70 J/m |
| Heat deflection temp (HDT) | ASTM D648 @ 66 psi | 58–68°C |
| Glass transition (Tg) | DMA, E″ peak | 55–70°C |
| Density, UV post-cure | — | 1.14–1.16 g/cm³ |
Values are typical property ranges from the KS608A datasheet; full mechanical properties are reached after UV post-cure. Confirm exact figures for your printer and post-cure schedule with our materials team.
Typical applications
Where teams run KS608A today.
Functional prototypes
Snap-fits, housings, fit & function tests
Concept models
Design review and appearance models
Low-volume production
Short-run functional end-use parts
Automotive parts
Under-hood-adjacent prototypes, brackets
Architecture models
Detailed scaled models and mockups
Vacuum-casting masters
Machinable, stable ABS-like patterns
Not sure KS608A is the right resin?
Three same-family SLA resins — tap the closest match and we’ll help you qualify it.
Don’t need the high heatKS408A UV SLA ResinView resin →
Need clear partsKS158T TransparentView resin →
Prefer a black finishKS808-BK BlackView resin →
Need clear partsKS158T TransparentView resin →
Prefer a black finishKS808-BK BlackView resin →
Tell us your part, printer and target properties — our materials engineer will confirm the right resin and cure schedule on a spec call.
Why source KS608A through Additive Plus
- Validated cure profiles for the SLA systems we support — no exposure trial-and-error.
- Batch-checked consistency — viscosity and cure energy verified to the datasheet so you reorder without re-qualifying.
- Materials engineering support — post-cure schedules, finishing, and vacuum-casting guidance from a real engineer.
- Ships from Los Angeles in 1–2 business days; custom and filled formulations qualified in-house, sub-24h engineer response.
| Brand | Kings3D |
| Country of origin | China |
| [email protected] MPA (°C) | 58-68 |
| Density | 1.11-1.14g/cm³ at 25 ℃ |
| Viscosity | 355-455 cps at 28 ℃ |
| Dp | 0.0053-0.0061in / 0.135-0.155mm |
| Ec | 9-12 mJ/c㎡ |
| Building layer thickness | 0.0019-0.0059in / 0.05-0.15mm |
| Hardness, Shore D | 76-82 (ASTM D 2240) |
| Flexural modulus, Mpa | 2,650-2,760 (ASTM D 790) |
| Tensile modulus, MPa | 2,160-2,360 (ASTM D 638) |
| Tensile strength, MPa | 25-30 (ASTM D 638) |
| Impact strength, notched lzod, J/m | 58 - 70 (ASTM D 256) |
| Glass transition, Tg，℃ | 55-70 (DMA，E”peak) |
| Density, g/cm3 | 1.14-1.16 (UV Postcure) |
| Technology | SLA |
| Printing Materials | Resins |
| Available colors | Light Yellow Tough |
| Flexural Strength (MPA) | 65-74 |
| Elongation at Break (%) | 12-20 |
Product videos
Don't see the resin you need?
Custom & filled formulations Profiles for printers we don't list yetTest specimens before you commit
Need a tuned resin, a filled or castable formulation, or a profile for a printer we don't list yet? Our materials team qualifies custom formulations and prints test specimens before you commit. Typical lead 2–4 weeks.
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· Lead time on requestFrom engineers running KS608A UV SLA Resin
Unedited feedback from teams that reorder KS608A.
★★★★★
Cure profile loaded straight into our printer and hit spec on the first build. Tough enough that our functional prototypes survive the drop tests we used to outsource in ABS.
MK
Marcus K. Process Engineer · Industrial Design
★★★★★
We run it as a vacuum-casting master — machines clean, holds dimensions, and the light-yellow finish reads close to ABS. Batch viscosity is identical run to run.
PS
Priya S. R&D Lead · Product Development
★★★★★
Asked about post-cure and HDT for a warm-environment part on a Friday; a materials engineer replied with real elongation and HDT data. Parts hold shape near the engine bay.
DR
Diego R. Production Lead · Automotive
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
Which SLA printers is KS608A compatible with?
KS608A is a general-purpose UV SLA resin compatible with laser-based (405 nm) SLA (stereolithography) systems — desktop or large-format. It ships with a validated exposure and cure profile for the SLA printers we support. If you run a printer we haven't profiled yet, or you're unsure of its wavelength, our materials engineers help you confirm fit and dial in exposure and post-cure.
How tough is KS608A, and how does it compare to ABS?
KS608A reaches 25–30 MPa tensile strength, 65–74 MPa flexural strength, 58–70 J/m notched Izod impact and 12–20% elongation at break. Its mechanical behavior and light-yellow appearance are close to molded ABS, which makes it suitable for functional prototypes and light production parts rather than only display models.
What temperature can KS608A parts withstand?
KS608A has a heat deflection temperature (HDT) of 58–68°C at 0.46 MPa and a glass transition (Tg) of 55–70°C. That covers warm assembly, functional testing, and under-hood-adjacent prototypes. It is not a high-temperature engineering resin for sustained service above those limits.
What post-processing does KS608A require?
Wash printed parts (typically in IPA) to remove uncured resin, then UV post-cure. Full mechanical properties are reached after post-cure, and density rises to 1.14–1.16 g/cm³. KS608A needs minimal part finishing and machines cleanly, so it is fast to bring to a finished surface.
Can KS608A be used as a vacuum-casting master pattern?
Yes. KS608A is machinable, dimensionally stable, and has an ABS-like finish, which makes it a proven master pattern for vacuum casting. Its improved dimension retention in humid conditions helps masters hold tolerance through the silicone-molding process.
What accuracy and layer thickness can I expect?
KS608A has a penetration depth (Dp) of 0.135–0.155 mm and critical exposure (Ec) of 9–12 mJ/cm², and supports build layer thicknesses of 0.05–0.15 mm. Combined with low shrinkage and strong dimensional stability, it holds tight tolerances for fit checks and functional prototypes.
What is the shelf life and how should KS608A be stored?
KS608A has a long shelf life, including in the machine vat. Store it sealed and away from direct light and UV, in a cool, stable environment — the same handling as other photopolymer SLA resins. Stir or gently agitate before use if it has been standing.
Do you offer volume pricing or custom formulations of KS608A?
KS608A ships in a standard 10 kg (22 lb) container. For larger orders or an official purchase order, contact us for volume pricing. Our materials team also qualifies custom and filled or castable formulations and profiles resins for printers we don't list yet — typically within 2–4 weeks, with test specimens before you commit.
Place your order, or talk to an engineer first
Order KS608A UV SLA Resin – High Accuracy, Toughness & Low Shrinkage for 3D Printing direct, or talk to materials engineer