Production of 1 TWC converter

Both sections (1 TWC)

NO_x-reduction (1/2 TWC)*

Weight, gram

7000 - 8000 [18]

3500 - 4000

Heat shield, gram

Aluminized steel

500 [50]

250

Canister, gram

18/8 stainless steel (type 304)

5000 [50] [51]

2500

Insulation, gram

Alumina-silica fibers, vermiculite and acryl binder

160 [50] - 500 [51]

80 - 250

Ceramic honeycomb, gram

Cordierite (1.4MgO∙3.6Al₂O₃∙5SiO₂)

1400 [50] [51]

700

Wash coat/catalytic coating, gram

Aluminum oxide (Al₂O₃)

Cerium oxide (CeO₂)

Zirconium oxide (ZrO₂)

Acetic acid (CH₃COOH)

Platinum (Pt)

Palladium (Pd)

Rhodium (Rh)

17 - 28

34 - 56

120 - 195

10

0.2 [18] [49]

1.4 [49] - 2.5 [18]

0.2 [18] [49]

8 - 14

17 - 28

60 - 98

5

0

0

0.2

Cardboard packaging, gram**

1000

500