Page 94 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

For cleaning the cast iron prior to enamelling only angular shot blasting material on the basis 8.1.2. Cast iron with spherical graphite complying to DIN EN 1563
of cast-steel or chilled cast iron has been proved. Both grades are having the essential (spherical graphite iron)

hardness and edge stability (Vickers-Hardness HV above 650). Fractionated corundum
also is very well suitable. Chemical analysis

The following limiting values of the main elements should be kept:

Cast iron with spherical graphite
Structure after thermal treatment

Ferritic Ferritic/Perlitic
a) Carbon, total C 3.00 - 4.00 3.00 - 4.00
b) Carbon, combined C max. 0.10 max. 0.50
c) Silicon Si 2.80 - 4.00 2.40 - 3.00
d) Manganese Mn max. 0.20 max. 0.40
e) Phosphorus P max. 0.05 max. 0.05
f) Sulphur S max. 0.005 max. 0.005
g) Magnesium Mg max. 0.05 max. 0.05
h) Aluminum Al max. 0.005 max. 0.005

Trace elements

i) Chromium Cr max. 0.05
j) Copper Cu max. 0.10
k) Molybdenum Mo max. 0.05
l) Nickel Ni max. 0.05
m) Titanium Ti max. 0.05

n) Vanadium V max. 0.05
o) Tin Sn max. 0,05
p) Sum Cr + V + Ti max. 0,12

Saturation value Sc = min. 1.04 max. 1.08
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