BEHAVIOR OF IRON ACCORDING TO TEMPERATURE GRADIENTS

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BEHAVIOR OF IRON ACCORDING TO TEMPERATURE GRADIENTS

Gray iron

Ductile iron

Low carbon steel castinhg

Low Alloy steel casting

Basic thermal resistance parameter (Eα/k)

24

67

55

89

Sheer thermal resistance parameter   [U / (Eα/k)]

9

7

9

7

Estimated thermal stress 1200°F

Good

Average

Average / Good

Average / Good

Thermal shock

Bad / Average

Average

Good

Good

Thermal constraints Mechanical endurance at 1200°F

Bad / Average

Average

Good

Good / Very good

High temperature resistance (Ksi)

4

6

9

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