Fracture Analysis of Compressor Impellers in Olefin Units: Numerical and Metallurgical Approach

Table 2

Chemical composition of specimens (%wt.).

Samples	Al	Zn	Mg	Cu	Fe	Si	Cr
1	Bal.	6.42	2.19	1.99	0.204	0.073	0.22
2	Bal.	6.252	2.202	1.956	0.254	0.060	0.222
3	Bal.	6.848	2.166	1.079	0.138	0.064	0.198
Standard	Bal.	5.1–6.1	2.1–2.9	1.2–2	0–0.2	0–0.15	0.18–0.28