Interchangeable valve body & bonnet materials

Specified Material	Alternative Material	Notes
A105 / A216 WCB / AISI 4140	A105N A216 WCC A352 LCC / LCB A350 LF2	Forged Carbon Steel Cast Carbon Steel Low Temperature CS Low Temperature CS
13% Chrome Stainless	AISI 410 SS A182 F6 / F6NM A351 CF8M Type 316 SS 17-4 PH A182 F51 UNS S31803	13% Chrome 13% Chrome Austenitic Castings A182 F316 / 316L High strength grade Duplex Stainless Duplex Stainless
Type 316 SS	A351 CF8M Type 316 SS A182 F51 UNS S31803	Austenitic Castings A182 F316 / 316L Duplex Stainless Duplex Stainless
Bronze	Aluminium Bronze Nickel Aluminium Bronze Monel
Nickel Aluminium Bronze	Monel
Duplex SS	ASTM A182 Gr F51 (UNS S31803) ASTM A890 J92205

Read more: http://www.instreng.com/instrumentation-selection-calculations/438-interchangeable-valve-body-bonnet-materials.html