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Alumina (Al₂O₃) Crucibles

High-purity alumina (Al₂O₃) crucibles for sintering, melting and thermal analysis, and general high-temperature use up to 1600°C.

Alumina (Al₂O₃, corundum) crucibles are the most widely used ceramic crucible for general high-temperature work — ceramic sintering, ash determination, metal melting and thermal analysis (TGA/DSC). Scuvette supplies high-purity Al₂O₃ crucibles in custom sizes for laboratories and industry, with long-term service temperatures up to 1600°C.

Why Choose Alumina (Al₂O₃) Crucibles

  • Cost-effective, widely available high-temperature ceramic with long-term service up to 1600°C.
  • Stable in neutral, oxidizing and many acid-environment conditions.
  • Low contamination of high-purity melts; available at 95% / 99% / 99.7% purity.
  • Good dimensional stability and moderate thermal-shock resistance for repeated use.
  • Custom shapes and sizes; OEM / ODM supported.

Specifications

MaterialAlumina (Al₂O₃), high-purity
Max service temperatureUp to 1600°C (long-term service; confirm atmosphere limits with our team)
Typical purity99%
ShapeCylindrical
LidWithout lid as standard; threaded-lid options available for selected sizes
CustomizationOEM / ODM, custom sizes available

Square / Rectangular Alumina Crucibles (49 Stock Sizes)

Scuvette supplies 99% alumina (Al₂O₃) square & rectangular crucibles in 49 stock sizes, each available open top (no lid), with lid (inner convex lid; flat lid for the 65×65× series), or as a single lid. High-purity corundum, rated up to 1600°C. See the dedicated page Square Alumina Crucibles.

45×8×6 mm
Wall 1.5 mm · 0.9 ml · Inner Convex Lid
No Lid US$2.40
With Lid US$4.00
Lid Only US$1.60
20×20×10 mm
Wall 2 mm · 2 ml · Inner Convex Lid
No Lid US$2.00
With Lid US$3.00
Lid Only US$1.00
20×20×17 mm
Wall 2 mm · 2 ml · Inner Convex Lid
No Lid US$2.00
With Lid US$3.00
Lid Only US$1.00
30×20×10 mm
Wall 3 mm · 2 ml · Inner Convex Lid
No Lid US$2.40
With Lid US$4.00
Lid Only US$1.60
50×10×10 mm
Wall 2 mm · 2 ml · Inner Convex Lid
No Lid US$2.90
With Lid US$4.20
Lid Only US$1.30
22×22×14 mm
Wall 2 mm · 3 ml · Inner Convex Lid
No Lid US$2.20
With Lid US$3.50
Lid Only US$1.30
25×15×15 mm
Wall 2 mm · 3 ml · Inner Convex Lid
No Lid US$2.40
With Lid US$4.00
Lid Only US$1.60
30×30×10 mm
Wall 3 mm · 4 ml · Inner Convex Lid
No Lid US$2.40
With Lid US$4.00
Lid Only US$1.60
50×20×10 mm
Wall 3 mm · 4 ml · Inner Convex Lid
No Lid US$4.00
With Lid US$5.50
Lid Only US$1.50
50×25×10 mm
Wall 3 mm · 4 ml · Inner Convex Lid
No Lid US$4.20
With Lid US$6.00
Lid Only US$1.80
30×20×17 mm
Wall 3 mm · 4.5 ml · Inner Convex Lid
No Lid US$2.40
With Lid US$4.00
Lid Only US$1.60
50×20×15 mm
Wall 3 mm · 7 ml · Inner Convex Lid
No Lid US$4.20
With Lid US$6.00
Lid Only US$1.80
30×30×20 mm
Wall 3.5 mm · 8.5 ml · Inner Convex Lid
No Lid US$3.40
With Lid US$5.00
Lid Only US$1.60
60×30×10 mm
Wall 3 mm · 9 ml · Inner Convex Lid
No Lid US$5.70
With Lid US$8.60
Lid Only US$2.90
50×20×20 mm
Wall 3 mm · 10 ml · Inner Convex Lid
No Lid US$4.20
With Lid US$6.00
Lid Only US$1.80
50×40×10 mm
Wall 3 mm · 10 ml · Inner Convex Lid
No Lid US$4.30
With Lid US$7.00
Lid Only US$2.70
50×50×10 mm
Wall 4 mm · 10.5 ml · Inner Convex Lid
No Lid US$5.70
With Lid US$10.00
Lid Only US$4.30
40×30×20 mm
Wall 3 mm · 13 ml · Inner Convex Lid
No Lid US$4.50
With Lid US$6.50
Lid Only US$2.00
50×25×20 mm
Wall 3 mm · 14 ml · Inner Convex Lid
No Lid US$5.20
With Lid US$7.00
Lid Only US$1.80
30×30×30 mm
Wall 3 mm · 15 ml · Inner Convex Lid
No Lid US$4.10
With Lid US$5.70
Lid Only US$1.60
60×30×15 mm
Wall 3 mm · 15 ml · Inner Convex Lid
No Lid US$6.40
With Lid US$9.30
Lid Only US$2.90
40×30×25 mm
Wall 3 mm · 17 ml · Inner Convex Lid
No Lid US$5.40
With Lid US$7.80
Lid Only US$2.40
50×40×15 mm
Wall 3 mm · 17 ml · Inner Convex Lid
No Lid US$4.80
With Lid US$7.50
Lid Only US$2.70
40×40×20 mm
Wall 3 mm · 18 ml · Inner Convex Lid
No Lid US$5.40
With Lid US$7.80
Lid Only US$2.40
50×25×25 mm
Wall 3 mm · 18 ml · Inner Convex Lid
No Lid US$6.70
With Lid US$8.50
Lid Only US$1.80
60×30×20 mm
Wall 3 mm · 20 ml · Inner Convex Lid
No Lid US$7.10
With Lid US$10.00
Lid Only US$2.90
40×30×30 mm
Wall 3 mm · 22 ml · Inner Convex Lid
No Lid US$6.20
With Lid US$8.60
Lid Only US$2.40
50×25×35 mm
Wall 3 mm · 25 ml · Inner Convex Lid
No Lid US$7.40
With Lid US$9.20
Lid Only US$1.80
50×40×20 mm
Wall 3 mm · 25 ml · Inner Convex Lid
No Lid US$5.80
With Lid US$8.50
Lid Only US$2.70
60×30×25 mm
Wall 3 mm · 28 ml · Inner Convex Lid
No Lid US$7.80
With Lid US$10.70
Lid Only US$2.90
40×40×30 mm
Wall 3 mm · 30 ml · Inner Convex Lid
No Lid US$8.00
With Lid US$10.50
Lid Only US$2.50
50×50×20 mm
Wall 3.5 mm · 30 ml · Inner Convex Lid
No Lid US$8.50
With Lid US$12.80
Lid Only US$4.30
60×40×20 mm
Wall 3 mm · 30 ml · Inner Convex Lid
No Lid US$9.30
With Lid US$12.90
Lid Only US$3.60
60×30×30 mm
Wall 3 mm · 35 ml · Inner Convex Lid
No Lid US$8.50
With Lid US$11.40
Lid Only US$2.90
50×50×25 mm
Wall 3.5 mm · 39 ml · Inner Convex Lid
No Lid US$10.00
With Lid US$14.30
Lid Only US$4.30
70×70×15 mm
Wall 4.5 mm · 39 ml · Inner Convex Lid
No Lid US$14.30
With Lid US$22.10
Lid Only US$7.80
40×40×40 mm
Wall 3 mm · 40 ml · Inner Convex Lid
No Lid US$9.60
With Lid US$12.00
Lid Only US$2.40
60×60×20 mm
Wall 4.5 mm · 40 ml · Inner Convex Lid
No Lid US$12.90
With Lid US$19.20
Lid Only US$6.30
60×60×25 mm
Wall 4.5 mm · 40 ml · Inner Convex Lid
No Lid US$18.00
With Lid US$24.30
Lid Only US$6.30
50×50×30 mm
Wall 3.5 mm · 45 ml · Inner Convex Lid
No Lid US$13.50
With Lid US$17.80
Lid Only US$4.30
60×60×30 mm
Wall 4.5 mm · 65 ml · Inner Convex Lid
No Lid US$18.00
With Lid US$24.30
Lid Only US$6.30
65×65×25 mm
Wall 4.5 mm · 65 ml · Flat Lid
No Lid US$21.40
With Lid US$31.40
Lid Only US$10.00
65×65×30 mm
Wall 4.5 mm · 80 ml · Flat Lid
No Lid US$22.90
With Lid US$32.90
Lid Only US$10.00
60×60×30 mm
Wall 4.5 mm · 90 ml · Inner Convex Lid
No Lid US$18.70
With Lid US$25.00
Lid Only US$6.30
65×65×35 mm
Wall 4.5 mm · 95 ml · Flat Lid
No Lid US$25.00
With Lid US$35.00
Lid Only US$10.00
70×70×30 mm
Wall 4 mm · 100 ml · Inner Convex Lid
No Lid US$20.10
With Lid US$27.90
Lid Only US$7.80
60×60×50 mm
Wall 4.5 mm · 110 ml · Inner Convex Lid
No Lid US$21.60
With Lid US$27.90
Lid Only US$6.30
70×70×45 mm
Wall 4 mm · 150 ml · Inner Convex Lid
No Lid US$30.10
With Lid US$37.90
Lid Only US$7.80
65×65×65 mm
Wall 4 mm · 190 ml · Flat Lid
No Lid US$35.00
With Lid US$45.00
Lid Only US$10.00

Available Sizes

Our cylindrical alumina crucibles are available in a wide range of outer diameter × height combinations. Capacities are approximate reference values from the factory catalogue.

Dimensions (Ø × H, mm)Capacity (ml)Note
10 × 100.4
20 × 30.4
11 × 201
12 × 121
10 × 401.5
13 × 251.5
20 × 101.5
14 × 251.75Threaded lid
10 × 502
16 × 202
30 × 52
10 × 602.5
12 × 392.5
16 × 282.5
30 × 103
18 × 263.5
14 × 454
20 × 204
16 × 506
19 × 356
28 × 176.5
16 × 567
23 × 277
18 × 407
16 × 708
25 × 258
25 × 308.5Threaded lid
20 × 5010
30 × 2510
54 × 810
19 × 5810.5
30 × 3012
50 × 1514.5
35 × 3015
23 × 6016
25 × 6018
28 × 5825
35 × 4025
37 × 4225Threaded lid
40 × 3530
60 × 2031
40 × 4033
50 × 3035
35 × 5036
35 × 6540
40 × 5045
50 × 4045
30 × 10050
45 × 4550
60 × 3052
40 × 6055
50 × 5060
40 × 8070
35 × 10070
60 × 4070
45 × 6575
50 × 6075
35 × 12080
75 × 2785
40 × 127100
63.5 × 160101Threaded
60 × 60110
50 × 80115
40 × 120120
40 × 137120
45 × 110120
80 × 60 × 60120Flanged
90 × 30140
50 × 100150
70 × 50150
60 × 80175
50 × 120180
59 × 87180
66 × 66180
80 × 50180
80 × 60 × 70180Flanged
100 × 35190
70 × 70215
100 × 40215
60 × 100225
50 × 180230
55 × 145250
60 × 120270
80 × 80300
90 × 65300
70 × 90300
100 × 50300
60 × 145310
70 × 120320
70 × 100330
100 × 60330
140 × 35380
80 × 100390
71.2 × 157.6390Threaded
66 × 150400
115 × 50410
114 × 60416
70 × 145425
80 × 120450
90 × 90450
95 × 95500
100 × 85500
115 × 70560
90 × 120575
80 × 160580
130 × 60590
80 × 170600
100 × 100600
88 × 150640
150 × 50670
91 × 163790
80 × 200800
110 × 120850
140 × 70850
160 × 60850
115 × 110890
150 × 65900
100 × 165990
115 × 120990
115 × 1301000
150 × 801000
120 × 1201060
100 × 1801100
100 × 2001200
100 × 2101290
125 × 1401300
115 × 1551325
125 × 1501400
130 × 1301500
140 × 1201500
175 × 801540
140 × 1401600
170 × 901600
150 × 1201770
150 × 1401900
115 × 2002100
150 × 1502200
150 × 1602300
150 × 1702350
130 × 2452500
200 × 1002500
150 × 1802600
230 × 802600
160 × 1602650
140 × 2402800
180 × 1703600
148 × 2653630
200 × 1203870
220 × 1203870
185 × 2205000
200 × 2005250
220 × 2207000

Applications

  • Ceramic and powder sintering, calcination and firing.
  • Ash determination and loss-on-ignition (LOI) testing.
  • Melting non-ferrous and some reactive metals (e.g. aluminium).
  • TGA / DSC and other thermal analysis; sample containment.

Handling & Thermal Notes

  • Pre-heat gradually to avoid thermal shock.
  • Avoid strongly alkaline melts, molten alkali carbonates and fluoride fluxes — alumina reacts with these.
  • Store dry; ceramic can absorb moisture over time.
  • Confirm rated temperature and atmosphere limits with our technical team before use.

Frequently Asked Questions

What is alumina (Al₂O₃) used for in crucibles?

Alumina crucibles are the standard general-purpose ceramic crucible for high-temperature work — sintering, ash testing, metal melting and thermal analysis (TGA/DSC) where stable, low-contamination containment up to 1600°C is required.

Can alumina crucibles be used for TGA / DSC?

Yes — high-purity alumina is a common crucible material for TGA/DSC and ashing because of its thermal stability and low background up to ~1600°C.

Which melts react with alumina crucibles?

Alumina can react with strong alkaline melts, molten alkali carbonates and fluoride fluxes. For strongly alkaline or reactive melts, MgO or zirconia is preferred. Confirm chemical compatibility for your specific melt with our team before use.

Request a Quote or Custom Size

Need a specific grade, capacity or shape? Contact sales@scuvette.com for lead time, customization and pricing. OEM / ODM supported. Worldwide shipping.

Inquiry Now

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