Alumina Silicate Grade "A" Lava

Technical Products, Inc. have tons of the finest quality Grade "A" Lava (Alumina Silicate) in stock and ready to deliver. Top quality and low prices- an unbeatable combination. Our staff has vast knowledge and experience in firing ceramics. Technical Products, Inc. has on-site several kilns to meet the demands of our customers. If you require just a firing process on your parts look to TPI we do that too.

General

Grade "A" Lava is a natural ceramic material. In chemical terms it is a hydrous alumina silicate. We supply this material in standard rods, blocks, and plates as well as special shapes.
Lava is a natural mineral that is mined, it may have grain, fractures, color, or other natural characteristics out of TPI's control. Thermal Processing may also cause inconsistencies as this material grows. TPI tries to control sizes and fractures but we claim no responsibility for fractures after firing.

Machining

Unfired Grade "A" Lava is a free machining material that can be shaped using most machine tools. The material is non-toxic but as with any airborne dust it could a be respiratory irritant if directly inhaled. Common sense and dust collection systems are recommended.

Firing

The following procedure should be followed carefully to avoid cracking:

Machined parts should be placed in a cool furnace and protected from direct heat radiation. The use of refractory furniture, boxes,or baffles is recommended. A heating rate of 200ºF - 250ºF per hour is typical. The rate of heating should not exceed 300ºF per hour.

Parts with cross sections exceeding 1/2" are more critical and cracking may occur during the firing cycle. If a cross section of 1/2" or greater is unavoidable, a heating rate of approximately 50ºF - 150ºF per hour and strategically placed stress relief holes may help minimize cracking.

The maturing temperature of Grade "A" Lava is between 1850ºF and 2000ºF. The temperature should be maintained for approximately 30 minutes up to 1/4" cross section and 45 minutes for 1/2" and greater cross sections. Fired pieces may be removed from the furnace after cooling below 200ºF.

During the firing process, Grade "A" Lava expands approximately 2%. A temperature of 2000ºF should not be exceeded. If 2000ºF is exceeded, crystallization, distortion, shrinkage and a loss of stated material properties will occur.

As with most natural materials, texture, color, hardness, machinability, final expansion, and ideal firing temperatures may vary. L911A color changes from dark gray to a pink/tan color after firing processes have been performed.

Please feel free to contact our technical staff with any additional questions that you may have.

Note: The information provided on this page is given as a guideline only. Specific applications may require other processes.


Lava Un-Fired, Bisque Fired & Full Fired

Lava

Alumina Silicate
Grade "A" Lava
L911A

Lava L911A

Versatile

Electrical Components
Prototype
Welding cups

FF Lava

Super Machinability

Bobbins & Spools
Bushings & Spacers
Coil Forms & Bars

Alumina Silicate

Lowest Cost

Alumina Silicate is known for its high temperature use, excellent thermal and low cost.

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Kiln Firing

Unfired, Bisque fired, & Full fired
applications in both the unfired and fully fired state

L911A - ALumina Silicate

Natural Material

Grade "A" (L911A) may have grain, fractures, color, or other natural characteristics.


Alumina Silicate Grade "A" (Lava) Rod Stock
Part# Diameter x Length Part# Diameter x Length
UFL1-0804 1/2"  Dia. x 4" UFL1-3604 2 ¼" Dia. x 4"
UFL1-0806 1/2"  Dia. x 6" UFL1-3606 2 ¼" Dia. x 6"
UFL1-0812 1/2"  Dia. x 12" UFL1-3612 2 ¼" Dia. x 12"
UFL1-1204 3/4"  Dia. x 4" UFL1-4804 3" Dia. x 4"
UFL1-1206 3/4"  Dia. x 6" UFL1-4806 3" Dia. x 6"
UFL1-1212 3/4"  Dia. x 12" UFL1-4812 3" Dia. x 12"
UFL1-1604 1"  Dia. x 4" UFL1-6404 4" Dia. x 4"
UFL1-1606 1"  Dia. x 6" UFL1-6406 4" Dia. x 6"
UFL1-1612 1"  Dia. x 12" UFL1-6412 4" Dia. x 12"
UFL1-2004 1 ¼"  Dia. x 4" UFL1-7204 4 ½" Dia. x 4"
UFL1-2006 1 ¼"  Dia. x 6" UFL1-7206 4 ½"  Dia. x 6"
UFL1-2012 1 ¼"  Dia. x 12" UFL1-7212 4 ½"  Dia. x 12"
UFL1-2404 1 ½"  Dia. x 4" UFL1-8004 5"  Dia. x 4"
UFL1-2406 1 ½"  Dia. x 6" UFL1-8006 5"  Dia. x 6"
UFL1-2412 1 ½"  Dia. x 12" UFL1-8012 5"  Dia. x 12"
UFL1-2804 1 3/4"  Dia. x 4" UFL1-9604 6"  Dia. x 4"
UFL1-2806 1 3/4"  Dia. x 6" UFL1-9606 6"  Dia. x 6"
UFL1-2812 1 3/4"  Dia. x 12" UFL1-9612 6"  Dia. x 12"
UFL1-3204 2"  Dia. x 4"    
UFL1-3206 2"  Dia. x 6"    
UFL1-3212 2"  Dia. x 12"    
Tolerances:
1/2" - 3/4" Dia. +.015"/-.000"
7/8" - 2 1/4" Dia. +.060"/-.000"
3" - 6" Dia.+.125"/-.000"
Length & Width are saw cut plus side
Tight tolerances available upon request & maybe subject to price change.
Item are not sold Online. Please call for pricing.
Alumina Silicate Grade "A" (Lava) Sheet Stock
Part# Thick x Width x Length Part# Thick x Width x Length
UFL2-020404 1/8" x 4" x 4" UFL2-240404 1 ½" x 4" x 4"
UFL2-020606 1/8" x 6" x 6" UFL2-240606 1 ½"x 6" x 6"
UFL2-021212 1/8" x 12" x 12" UFL2-241212 1 ½" x 12" x 12"
UFL2-040404 1/4" x 4" x 4" UFL2-320404 2" x 4" x 4"
UFL2-040606 1/4" x 6" x 6" UFL2-320606 2" x 6" x 6"
UFL2-041212 1/4" x 12" x 12" UFL2-321212 2" x 12" x 12"
UFL2-060404 3/8" x 4" x 4" UFL2-480404 3" x 4" x 4"
UFL2-060606 3/8" x 6" x 6" UFL2-480606 3" x 6" x 6"
UFL2-061212 3/8" x 12" x 12" UFL2-481212 3" x 12" x 12"
UFL2-080404 1/2" x 4" x 4" UFL2-640404 4" x 4" x 4"
UFL2-080606 1/2" x 6" x 6" UFL2-640606 4" x 6" x 6"
UFL2-081212 1/2" x 12" x 12" UFL2-641212 4" x 12" x 12"
UFL2-120404 3/4" x 4" x 4" UFL2-800404 5" x 4" x 4"
UFL2-120606 3/4" x 6" x 6" UFL2-800606 5" x 6" x 6"
UFL2-121212 3/4" x 12" x 12" UFL2-801212 5" x 12" x 12"
UFL2-160404 1" x 4" x 4" UFL2-960404 6" x 4" x 4"
UFL2-160606 1" x 6" x 6" UFL2-960606 6" x 6" x 6"
UFL2-161212 1" x 12" x 12" UFL2-961212 6" x 12" x 12"
UFL2-200404 1 ¼" x 4" x 4" Lava UF Raw Quarry Block
UFL2-200606 1 ¼" x 6" x 6" UFL7-081212 8" x 12" x 12"
UFL2-201212 1 ¼" x 12" x 12"    
Tolerances:
1/8" - 1/4" Thick +.015"/-.000"
3/8" - 1/2" Thick +.030"/-.000"
3/4" - 6" Thick +.060"/-.000"
Length and Raw Quarry Block are saw cut plus side
Tight tolerances available upon request & maybe subject to price change.
Item are not sold Online. Please call for pricing.
Alumina Silicate Grade "A" (Lava) Bar Stock
Part# Thickness Squared x Length Part# Thickness Squared x Length
UFL4-0804 1/2" sq. x 4" UFL4-3204 2" sq. x 4"
UFL4-0806 1/2" sq. x 6" UFL4-3206 2" sq. x 6"
UFL4-0812 1/2" sq. x 12" UFL4-3212 2" sq. x 12"
UFL4-1204 3/4" sq. x 4" UFL4-4804 3" sq. x 4"
UFL4-1206 3/4" sq. x 6" UFL4-4806 3" sq. x 6"
UFL4-1212 3/4" sq. x 12" UFL4-4812 3" sq. x 12"
UFL4-1604 1" sq. x 4" UFL4-6404 4" sq. x 4"
UFL4-1606 1" sq. x 6" UFL4-6406 4" sq. x 6"
UFL4-1612 1" sq. x 12" UFL4-6412 4" sq. x 12"
UFL4-2004 1 ¼" sq. x 4" UFL4-8004 5" sq. x 4"
UFL4-2006 1 ¼" sq. x 6" UFL4-8006 5" sq. x 6"
UFL4-2012 1 ¼" sq. x 12" UFL4-8012 5" sq. x 12"
UFL4-2404 1 ½" sq. x 4" UFL4-9604 6" sq. x 4"
UFL4-2406 1 ½" sq. x 6" UFL4-9606 6" sq. x 6"
UFL4-2412 1 ½" sq. x 12" UFL4-9612 6" sq. x 12"

 

Tolerances:
1/2"  Square +.030"/-.000"
3/4" - 6"  Square +.060"/-.000"
Length are saw cut plus side
Tight tolerances available upon request & maybe subject to price change.
Item are not sold Online. Please call for pricing.

Contact Us


Technical Products, Inc.
198 West Progress Drive
West Bend, WI 53095

PO Box 189
Hubertus, WI 53033

P: (262) 335-3635
F: (262) 335-3606
Email
tpi@technicalproductsinc.com