Ceresist - Ceramic Materials - Corrosion Comparison

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Corrosion Comparison

Unlike mechanical means of degradation (abrasion, erosion, and wear), if a specified material is not resistant to the corrosive effects of the conveyed fluid, it will fail disastrously. In many industrial applications, we routinely find services that are both erosive and corrosive - thus presenting material selection challenges.

Ceramics are extremely inert to corrosive attack, and are also very wear resistant - making them ideal materials for use in services that are both corrosive and abrasive.

Ceramic Materials

Hardness Comparison

Corrosion Comparison

Physical Properties

Corrosion Comparison Chart

Fluid

20%
HCl

90%
H₂SO₄

60%
H₃PO₄

10%
HF

60%
HNO₃

30%
NaOH

Temperature

60°C

95°C

60°C

95°C

60°C

95°C

60°C

95°C

60°C

95°C

60°C

95°C

99.0% Alumina

A

B

C

A

B

C

99.5% Alumina

A

B

C

A

B

Zirconia

A

C

A

B

Silicon Carbide

A

Silicon Nitride

B

C

A

B

C

A

C

B

C

SS304

C

A

B

A

SS316

C

A

B

A

B

HC 276

B

C

B

C

A

B

C

A

HB

C

B

Stellite 6

C

B

C

B

C

A

B

C

Stellite 12

C

A

C

A

C

A

B

Tantalum

A

C

A

C

Zirconium

A

B

C

A

B

A

Legend

A - Negligible corrosion or fully compatible
B - Slight corrosion, use with periodic inspection
C - Excessive corrosion, not suitable for service