What is The Casting Shrinkage Rate of Various Suitable Alloys in Investment Casting

Types of alloy Free shrinkage Hindered contraction
Carbon steel and low alloy steel 1. 6 ~ 2.0 1. 3 ~ 1. 7
High Cr alloy steel 1. 3 ~ 1. 7 1.0 ~ 1. 4
Ferritic austenitic steel 1.8 ~ 2.2 1. 5 ~ 1.9
Austenitic steel 2.0 ~ 2.3 1.7 ~ 2.0
Gray cast iron 1.0 0.9
Nodular cast iron 1.0 0.8

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