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Commonly used material performance table

Number of visits: Date:2012-9-18 11:24

 

Mechanical
properties

Unit

Al2O3

SiC

Si3N4

ZrO2

GCr15

9Cr18

 
 

Density

g/cm3

3.95

3.15

3.20

6.00

7.8

7.9

 

Color

Yellowish

Black

Black And
Grey

White And
Black

Sliver
White

Sliver
White

Bending
strength

MPa

300~400

400~500

800~1200

950~1200

2400

2600

 

Modulus of
elasticity E

GPa

380

350

300-320

210

208

200

 

Poisson ratio

 

0.22

0.14

0.26

0.3

0.3

 

Hardness

Hv

1800

2000~2500

1400~1700

1100~1300

700~800

700~800

 

HRC

80

85~90

75~80

70~75

58-62

58-62

 

Fracture
Toughness

MPam1/2

3.0~4.0

3.0~4.0

5.0~7.0

8.0~10.0

20

25

 

Max use
temperature

1000

1300

800

400

120

150

 

Coefficient of
thermal
expansion

10-6/

8.4

4.0

3.3

10.3

11

17

 

TypeInfo: Technical Column

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