Specifications

High quality zirconia ceramic piston plunger

zirconia ceramic piston, sleeve,shaft rod
High strength and mechnical strength
High density
Stable dimension

Specifications:

1) Material:

    a) 95% Al2O3
    b) 99.5% Al2O3
    c) ZrO2

2) Surface finish:

    a) Normal polish Ra 08-1.0μm
    b) Fine polish Ra 0.4-0.6μm
    c) Diamond polish Ra 0.2μm  

3) Properties:  

    a) Wear resistant
    b) Corrosion resistant
    c) Heat resistant .
    d) Stable dimensions
    e) Lightweight ,
    f) Long performance life

ceramics performance paramcter
NO.	item	unit	materials
			A-95	A-97	A-99	ZTA	ZRO2
1	density	g/cm 3	3.6	3.65	3.7	4.0-4.3	5.5-6.05
2	bending strength	Mpa	300	350	400	700	1100
3	fracture toughness	Mpam 1/2	4	4.5	5	7	12
4	Hardness	HRA	≥86	≥88	≥89	≥90	88-90
	Modulus of elasticity	GPa	320	350	390	300	220
5	coefficient of linear expansion	X10 -6 /k	6.5-11.2
6	Minimal residual unbalance of up to	Gmm/kg	≤0.8
7	unbalance reduction rate		≥85%