Technical data

Company

GCrl5

9Crl8

Si3N4

Zr02

p Density

g/cm³

7.8

7.9

3.2

6

a Coefficient of expansion

10-6/ degree

11

17

3.2

10.5

IE modulus of elastcity

GPa

208

200

320

210

u Poisson ratio

0.3

0.3

0-26

0.3

HV Hardness

Mpa

800

700

1700

1300

oBFlexural strength

Mpa

2400

2600

900

1000

Compressive strength

Nm/cm²

Kc Impact strength

W/mk

20

25

7

11

λ Thermal conductivity

mm2/m

30-40

15

3.5

3.5

Ω specific resistivity

J/KgK

1

0.75

1018

1015

specific heat

degree

450

450

800

400

MAX permissible sewice temperature

120

150

1000

800

anti?corrossion

none

weak

strong

strong

NO.of stress circle(50%destroy)

10*106

10*106

50*106

50*106

Destroy model

peel off

peel off

peel off

peel off/break

Anti?magnetism

none

none

good

good

Dimension stability

not good

not good

good

good

Insulate properties

not good

not good

good

good