MachineU > China Products > Chemicals > Inorganic Chemicals > Non-Metallic Products > Ceramics

High Precision 3.6g/cm3 - 3.9g/cm3 Alumina Ceramic Components

Specifications

Brand Name :

Antaeus

Model Number :

AD-A012

Certification :

Place of Origin :

Hunan,China

MOQ :

Negotiation

Price :

Negotiation

Payment Terms :

T/T or Negotiation

Supply Ability :

Full Supply

Delivery Time :

15-45 days

Packaging Details :

Inner vacuum packaging, outside carton.

Chemical ingredients :

Al2O3

Max. Use Temp. :

1650℃

Bulk Density :

3.6g/cm3-3.9g/cm3

Water absorption :

ROHS Hardness :

≥85

Flexural strength :

358(52) - 550 Mpa(psix10^3)

Compressive Strength :

2068(300) - 2600(377) Mpa(psix10^3)

Coefficient of thermal expansion :

7.6 - 8.2 / 1X10^-6/℃

Coefficient of thermal conductivity :

16-30.4 / W/m.K

Thermal Shock Resistance :

250℃

Dielectricity constant :

9-9.7 / 1MHz.25℃

Dielectric strength :

8.3(210) - 8.7(220) / ac-kV/mm(ac V/mil)

Volume Resistivity :

>10^13 ohm-cm

Description

High Precision 99 Alumina Ceramic Components Machining Parts

1. Description:

The main applications and some of the foundry products which are used in aluminium casting and processing.1) Window Frames: Due to its corrosion resistance, aluminium is well-suited to applications in which it comes into contact with the elements such as in window and door frames. Because aluminium is malleable, it is easy to produce into window frames with complex and aesthetically pleasing profiles. 2) Electronics: Aluminium is frequently used by the electronics industry in the production of capacitor foil, conductor tracks on silicon chips and hard disc drives. 3) Transport: Aluminium and its alloys are widely used in a range of transport applications as their low density dramatically to reduces vehicle weight and fuel consumption.

2. Feature Advantage:

1) High elasticity modulus

2) High compressive strength.

3) Anti corrosion

4) Abrasion resistance

5) Impact resistance

6) High precision

7) High stability

8) Good advanced ceramic materials

9) High welding sealing performance

10) High hardness and high density

11) Low thermal conductivity

12) Chemical inertness

13) Good wear resistance

14) High Fracture toughness

15) Good insulation performance

16) High temperature resistance

17) A variety of specifications is available

18) Satisfy various technical requests

19) Lower medium spoilage

20) Stiffness texture

21) Widely apply for automotive ceramic sensor , ceramic heater ,electric heating

3. Material Features / Properties:

Composite	(wt %)	99%	99.5%	99.8%
Color		White or Ivory	White or Ivory	White or Ivory
Density	g/cm 3	3.82	3.9	3.92
Hardness	HRA	83	85	85
Flexural Strength	Mpa (psi*10 3 )	375	386	381

4. Technical Parameters:

Technical Parameters of Ceramics
Items	Test Conditions	Unit or Symbol	99% AL2O3	95% AL2O3	90% AL2O3	Zirconia	Steatite	Silicon Carbide
Volume Density	--	g/cm3	≥3.70	≥3.62	≥3.40	≥5.90	≥2.60	≥3.08
Tightness	--	Pa·m³/s	≤1.0×10-11	≤1.0×10-11	≤1.0×10-11	-	-	-
Liquid Permeability	--	--	Pass	Pass	Pass		Pass	-
Flexural Strength	-	MPa	≥300	≥280	≥230	≥1100	≥120	≥400
Elastic Modulus	-	GPa	-	≥280	≥250	≥220	-	400
Poisson Ratio	-	-	-	0.20～0.25	0.20～0.25	-	-	-
Thermal Shock Resistance	800℃( Room Temperature) Cycle: 10 times		Pass	Pass	Pass	-	-	-
Coefficient of Linear Expansion	20℃～100℃	×10-6 K-1	-	-	-		≤8	-
	20℃～500℃	×10-6 K-1	6.5～7.5	6.5～7.5	6.5～7.5	6.5～11.2	-	-
	20℃～800℃	×10-6 K-1	6.5～8.0	6.5～8.0	6.3～7.3		-	4
	20℃～1200℃	×10-6 K-1	-	7.0～8.5	-	-	-	-
Coefficient of Thermal Conductivity	20℃	W/(m·k)	-	-	-	-	-	90～110
Coefficient of Thermal Conductivity	1000℃	W/(m·k)	-	-	-	-	-	90～110
Dielectric Constant	1MHz 20℃	-	9.0～10.5	9.0～10	9.0～10	-	≤7.5	-
	1MHz 50℃	-	-	9.0～10	-	-	-	-
	10GHz 20℃	-	9.0～10.5	9.0～10	9.0～10	-	-	-
Volume Resistivity	100℃	Ω·cm	≥1.0×1013	≥1.0×1013	≥1.0×1013	-	≥1.0×1012	-
	300℃		≥1.0×1013	≥1.0×1010	≥1.0×1013	-	-	-
	500℃		≥1.0×109	≥1.0×108	--	-	-	-
Disruptive Strength	D.C	kV/mm	≥17	≥15	≥15	-	≥20	-
Chemical Durability	1:9HCl	mg/c㎡	≤0.7	≤7.0	-	-	-	-
Chemical Durability	10%NaOH	mg/c㎡	≤0.1	≤0.2	-	--	-	-
Grain Size	-	μm	-	3~12	-	-	-	-

5. Process Flows:

Formulating --- Granulating --- Forming --- Sintering --- Grinding --- Inspecting --- Packing