Materials classes for pumps

Pump parts Materials classes
I-1 I-2 S-1 S-3 S-4 S-5 S-6
Casing Cast iron Cast iron Carbon steel Carbon steel Carbon steelCarbon steel Carbon steel
Inner casing parts Cast iron Bronze Cast iron Ni-Resist Cast iron Carbon steel 12% CR
Shaft Carbon steel Carbon steel Carbon steel Carbon steelCarbon steel AISI 4140 AISI 4140
Impeller Cast iron Bronze Cast iron Ni-Resist Carbon steel Carbon steel 12% CR


Pump parts Materials classes
S-8 S-9 C-6 A-7 A-8 D-1 D-2
Casing Carbon steel Carbon steel12% CR AUS 316 AUSDuplex Superduplex
Inner casing parts  316 AUS Ni-Cu Alloy12% CR AUS316 AUS Duplex Superduplex
Shaft 316 AUS Ni-Cu Alloy12% CRAUS316 AUS Duplex Superduplex
Impeller 316 AUS Ni-Cu Alloy 12% CR AUS 316 AUS Duplex Superduplex