Howco Group Technical Guide Stainless & Duplex 420M

Nickel & Super Alloys

 

Super 13 Cr.

450

F44 Al 6082

410

431

31803-F51 Al 7075
420 Mod. 316L

32760-F55  
F6NM 304L

660 (a-286)  
17/4PH XM19

Al 6061  
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13 Cr Stainless  

 

GENERAL SCOPE
 

This is a martensitic stainless steel used in the hardened and tempered condition. It is used extensively on completion equipment in both bar and tubulars form, for structural and pressure containing members, in standard and CO2 environments. pH, chlorides, temperature and H2S can limit its use in other environments. The grade is approved by NACE MR0175 supplied to 22 HRC for packers and other sub-surface equipment.
 

This alloy generally has better hot working characteristics than 410, and is less susceptible to cracking at heat treatment.

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