US2016097112A1PendingUtilityA1

Ni-Fe-Cr-Mo Alloy

Assignee: VDM Metals GmbHPriority: Oct 29, 2010Filed: Oct 23, 2015Published: Apr 7, 2016

Est. expiryOct 29, 2030(~4.3 yrs left)· nominal 20-yr term from priority

C22C 30/02F16L 9/02C22C 38/005C22C 38/42B23K 35/304C22C 38/08C22C 30/00B23K 35/0261C22C 38/001C22C 38/004C22C 38/44C22F 1/10C22C 19/055C22C 38/02C22C 38/06C22C 38/54B23K 35/02C22C 38/58B32B 15/01

PatentIndex Score

Cited by

References

Claims

Abstract

The invention relates to an alloy comprising (in mass %) Ni 33-35%, Cr 26-28%, Mo 6-7%, Cu 0.5-1.5%, Mn 1.0-4%, Si max. 0.1%, Al 0.01-0.3%, C max. 0.01%, N 0.1-0.25%, B 0.001-0.004%, SE>0 to 1%, and Fe remainder, including unavoidable impurities.

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
         1 . A structural part comprising an alloy with (in mass %)
 Ni 33-35%   Cr 26-28%   Mo 6-7%   Cu 0.5-1.5%   Mn 1.0-4%   Si max. 0.1%   Al 0.01-0.3%   C max. 0.01%   N 0.1-0.25%   B 0.001-0.004%   RE &gt;0 to 1%   Fe remainder, including unavoidable impurities, wherein the structural part has an erosion rate of less than 0.20 mm/year in technical phosphoric acid with a chloride concentration up to 1000 ppm at 100° C.   
     
     
         2 . A structural part comprising an alloy with (in mass %)
 Ni 33-35%   Cr 26-28%   Mo 6-7%   Cu 0.5-1.5%   Mn 1.0-4%   Si max. 0.1%   Al 0.01-0.3%   C max. 0.01%   N 0.1-0.25%   B 0.001-0.004%   RE &gt;0 to 1%   Fe remainder, including unavoidable impurities, wherein the structural part, under conditions according to ASTM G 28, Practice A, is resistant to intergranular corrosion and has an erosion rate of less than 0.5 mm/year.   
     
     
         3 . The structural part according to  claim 1 , wherein the Ni content (in mass %) is 33.5-34.5%. 
     
     
         4 . The structural part according to  claim 1 , wherein the Mn content (in mass %) is 1.5-3.5%. 
     
     
         5 . The structural part according to  claim 1 , wherein the Mn content (in mass %) is 1.5-3.0%. 
     
     
         6 . The structural part according to  claim 1 , wherein the Mn content (in mass %) is 1.5-2.6%. 
     
     
         7 . The structural part according to  claim 1 , wherein the manganese content (in mass %) is 1.5 to 2.0%. 
     
     
         8 . The structural part according to  claim 1 , wherein the nitrogen content (in mass %) is 0.14 to 0.22%. 
     
     
         9 . The structural part according to  claim 1 , wherein RE is formed by cerium mixed metal in contents between 0.001 and 0.1%. 
     
     
         10 . The structural part according to  claim 9 , wherein the grand total of RE is max. 0.06%. 
     
     
         11 . The structural part according to  claim 1 , wherein the effect total PREN (=mass % Cr+3.3 mass % Mo+30 mass % N)≧50. 
     
     
         12 . The structural part according to  claim 1 , wherein the effect total PREN (=mass % Cr+3.3 mass % Mo+30 mass % N)≧54.

Join the waitlist — get patent alerts

Track US2016097112A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.