TGA Alumina Crucible for Thermogravimetric Analysis | Repeatable High-Temperature Runs

ADCERAX supplies high quality TGA alumina crucibles from China. Made from ≥99% Al₂O₃, they offer high-temperature resistance, low contamination risk, and stable results. Standard items are in stock for fast supply, and customized dimensions or wall thickness.

Catalog No. AT-ALG-001-1
Material ≥99% Al2O3
Working Temperature Up to 1730°C (99.7% purity)
Expansion Coefficient ~8×10⁻⁶ /K (RT to 1200°C)
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TGA alumina crucible (also called alumina TGA crucible or alumina crucible for TGA) is a small Al₂O₃ cup used to hold samples during thermogravimetric analysis. Compared with metal or glass cups, dense alumina resists high temperatures and common lab reagents, enabling reliable weight-change tracking across heating programs.

Benefits of TGA Alumina Crucible

  • Baseline stability: thin-wall options improve thermal response while maintaining cup rigidity, helping reduce baseline drift during programmed ramps.
  • Low contamination risk: dense alumina surface minimizes interaction with common polymers, fillers, and inorganic powders, supporting consistent residue analysis.
  • Instrument fit & handling: volumes and rim profiles align with common pan holders; optional lids help control local gas exchange for volatile samples.

 

Alumina Crucible TGA Properties

Property Unit 99.5% Al₂O₃ 99.6% Al₂O₃ 99.7% Al₂O₃ 99.8% Al₂O₃ 99.9% Al₂O₃ 99.99% Al₂O₃
Alumina content % 99.5 99.6 99.7 99.8 99.9 99.99
Density g/cm³ 3.89 3.91 3.92 3.93 3.94 3.98
Open porosity % 0
Color Ivory Ivory Ivory Ivory Ivory Ivory
Water absorption % 0 0 0 0 0
Young’s modulus (Elastic modulus) GPa 375 356 357 358 359 362
Shear modulus GPa 152
Bulk modulus GPa 228
Poisson’s ratio 0.22
Compressive strength MPa 2600 2552 2554 2556 2558 2570
Flexural strength MPa 379 312 313 314 315 320
Fracture toughness MPa·m¹ᐟ² 4
Hardness GPa 14.1 (≈1440 kg/mm²) 23 24 25 26 30
Thermal conductivity W/m·K 35 32–37 33–38 34–39 35–40 36–42
Thermal shock resistance ΔT °C 222 223 224 225 228
Maximum use temperature (no load) °C ≤1750 1755 1760 1765 1770 1800
Coefficient of thermal expansion 10⁻⁶/°C 8.4
Specific heat J/kg·K 880
Volume resistivity Ω·cm >1×10¹⁴ >1×10¹⁴ >1×10¹⁴ >1×10¹⁴ >1×10¹⁴ >1×10¹⁴
Dielectric constant (relative permittivity) 9.8 9.83 9.84 9.85 9.86 9.92
Dielectric strength kV/mm 16.9 23.2 23.4 23.6 23.8 24
Dissipation factor (loss factor @ 1 kHz) 0.0002

 

Alumina Crucible TGA Specifications

Item NO. Item name Capacity MOQ Part# Compatible with
AT-ALG-001-1 Alumina Crucible (Glazed Inside) 14cc; Purity99.5% 20PCS AR9047 For LECO 701
AT-ALG-001 Alumina Crucible (Glazed Inside) 14cc; Purity99.5% 20PCS AR9047 For LECO 701
AT-ALG-002 Alumina Crucible (Unglazed) 14cc; Purity99.5% 20PCS AR9047 For LECO 701
AT-018 LECO Large Al₂O₃Crucible (Glazed Inside) 20CC; Purity99.5% 20PCS 621-331 /529-047 AR9047 For LECO 701
AT-018-1 ELTRA Al₂O₃Crucible 18CC; Purity99.5% 20PCS Eltra 26063
AT-018-4 LECO Large Al₂O₃Crucible (Yellow, Glazed Inside) 20CC; Purity99.5% 20SET 621-331 /529-047 AR9047 For LECO 701
AT-018-2 LECO Large Al₂O₃Crucible (Unglazed) 20CC; Purity99.5% 20PCS 621-331 /529-047 AR9047 For LECO 701
AT-MY-17 LECO Small Al₂O₃Crucible (Glazed Inside) 16CC; Purity99.5% 20PCS 529-042 529-402 AR9042 For LECO TGA 500/501/601/701; MAC 400/500
AT-MY-17-5 LECO Small Al₂O₃Crucible (Unglazed) 16CC; Purity99.5% 20PCS 529-042 529-402 AR9042 For LECO TGA 500/501/601/701; MAC 400/500
AT-020 LECO Large Al₂O₃Crucible (Fully Glazed) 37CC; Purity99.5% 20PCS customized product
AT-021 LECO Small Al₂O₃Crucible (Unglazed) 10CC; Purity99.5% 20PCS customized product
AT-019 LECO Large Al₂O₃Crucible Lid OD36.5*H6.5*T1.0mm. Purity99.5% 20PCS 529-048 Alpha AR9043 For TGA 20cc
AT-MY-18 LECO Al₂O₃Crucible Lid OD34.5*H6.5*T1.0mm Purity99.5% 20PCS 529-043 Alpha AR9043 For TGA 16cc

*Note: The table above shows only some standard specifications. For more specifications, please refer to the complete product catalogue or contact us for customization.

 

Alumina TGA Crucibles Packaging

  • With foam separation, sealed inner sleeve; outer carton with shock protection.

Alumina TGA Crucibles Packaging

TGA Alumina Crucible Applications

  • Laboratory Polymer Decomposition

    ✅ Key Advantages

    1. Tight mass-loss repeatability — thin-wall 70–85 µL cups improve response during 10–20 K/min ramps, supporting consistent onset/step readings.
    2. Low background residue — dense Al₂O₃ minimizes cup-derived artefacts when quantifying filler content or char yield.
    3. Controlled volatilization — flat or pierced lids stabilize local atmosphere for additives and low-MW fractions.

    ✅ Problem Solved

    In a weekly QC routine, switching to alumina TGA crucibles with lids reduced reruns caused by volatilization spikes and improved replicate RSD (mass-loss at 600 °C) from ~3% to ~1–1.5%, keeping batch release schedules on time.

  • Industrial Inorganic Precursors & Calcination Studies

    ✅ Key Advantages

    1. High-temperature headroom — up to 1,600 °C capability accommodates oxide/carbide precursor burn-off and residue checks.
    2. Chemical robustness — alumina cup withstands oxidizing/inert atmospheres used for calcination steps.
    3. Dimensional consistency — controlled rim Ø supports automated placement across sequences.

    ✅ Problem Solved
    For oxide precursor screening in industrial chemical processing, standard 900 µL crucibles enabled longer high-temperature holds without cup deformation, reducing aborted runs by >50% over a month-long test window.

  • Medical Biomaterials & Filler Analysis

    ✅ Key Advantages
    1. Accurate residue tracking — alumina crucibles allow precise mass-loss measurement of bone cement fillers and bio-composite residues.
    2. Stable baseline in moisture-sensitive tests — thin-wall cups reach equilibrium quickly, supporting reproducibility in hydrated biomaterials.
    3. Reduced cross-contamination — dense Al₂O₃ surface prevents carryover when analyzing pharmaceutical excipients or implant-grade powders.

    ✅ Problem Solved
    In a medical materials testing facility, switching to alumina TGA crucibles with lids reduced inconsistencies in filler content verification of bio-cements. Repeat test frequency dropped from 4–5 runs per lot to 1–2, ensuring regulatory compliance while saving analyst time.

 

Alumina TGA Crucibles Usage Instructions

  • Before the run

    1. Inspect rim and seating; verify volume and holder fit.
    2. Pre-condition new cups with an empty heat cycle if your SOP requires.
    3. For volatile samples, choose a flat or pierced lid and record total tare.

  • During the run

    1. Avoid overfilling; typical fill height ≤ 2/3 depth.
    2. Keep cup centred; confirm auto-sampler clearance.
    3. Use inert tweezers to prevent metal transfer.

  • After the run

    Allow to cool in a dust-free area; remove residues mechanically.

  • Storage

    Store in a lidded tray with separators; label by batch/volume; avoid cross-contact with steel tools.

  • Common mistakes & fixes

    1: baseline drift → check cup deformation, replace thin-wall cups after defined cycles.
    2: lid pop-off → verify seating and avoid overfilled foaming samples.
    3: auto-sampler fault → confirm rim Ø tolerance and tray position.

Alumina Crucible TGA FAQ

  1. Q: How to clean alumina crucible TGA?
    A: soak in appropriate solvent if compatible; follow with deionized water rinse and low-temperature bake-out.
  2. Q: How to remove iron from alumina crucible TGA?
    A: If minor Fe transfer occurs (from tools), use non-abrasive chelating soak per lab SOP; avoid aggressive grinding that changes mass.
  3. Q: Can I order a customized TGA alumina crucible for special depth or ID?
    A: Yes. We support customized TGA alumina crucible requests with drawing-based tolerances; typical lead time communicated after DFM review.
  4. Q: Are your cups compatible with TA-type platforms?
    A: Yes, we supply alumina TGA crucibles compatible with the TA instrument well. You can send holder dimensions to confirm fit.
  5. Q: What if I need a pierced lid for volatiles?
    A: ADCERAX is a china TGA alumina crucible manufacturer and factory with support for customize according to your drawings and sampling.
  6. Q: Can you supply a fair price TGA alumina crucible for laboratory use?
    A: Yes. ADCERAX can supply TGA alumina crucible options at a fair price in standard volumes of 70 µL, 85 µL, 900 µL, and other sizes, along with matching lids. Prices are based on order size and packaging (trial packs or wholesale cartons), ensuring both affordability and consistent quality for research and industrial testing needs.

What Our Customers Say: TGA Alumina Crucible

  • ⭐️⭐️⭐️⭐️⭐️
    “We received a stable supply of TGA alumina crucibles from China. The fair price and high quality make them suitable for our routine lab work.”
    -- John Miller – Lab Manager, US Testing Services
  • ⭐️⭐️⭐️⭐️⭐️
    “Custom depth and thin-wall design delivered as promised. The customized TGA alumina crucible matched our auto-sampler tray precisely.”
    -- Li Wei – Purchasing Officer, Shanghai Materials Co
  • ⭐️⭐️⭐️⭐️⭐️
    “We looked for a reliable China TGA alumina crucible factory and found ADCERAX. The direct supply made our procurement easier and reduced waiting time.”
    – QC Supervisor, UK Polymers Ltd.
  • ⭐️⭐️⭐️⭐️⭐️
    “I tested both 70 µL and 900 µL crucibles. The quality was consistent across batches, which is important for our routine TGA work.”
    –Maria Rossi – Research Scientist, EuroChem Italy
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Customized TGA Alumina Crucible

As a China TGA alumina crucible factory, we support both small trial runs and large wholesale supply, ensuring precise compatibility with TG-DTA and TGA instruments. Delivering high quality and flexible supply to meet laboratory and industrial needs. What You Can Specify:

  • Outer/Inner Dimensions & Tolerances(Ø, ID, depth, wall thickness)
  • Cup Geometry: standard/deep/shallow; thin-wall or reinforced wall
  • Lid Options: flat lid / pierced lid / domed lid; fit and clearance per holder
  • Surface Finish: as-sintered / light polished / glaze
  • Identification: batch code / etched part number for lot traceability

 

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