US2020172999A1PendingUtilityA1

Al casting alloy

Assignee: KSM CASTINGS GROUP GMBHPriority: Dec 22, 2016Filed: Dec 12, 2017Published: Jun 4, 2020

Est. expiryDec 22, 2036(~10.4 yrs left)· nominal 20-yr term from priority

Inventors:Sebastian Uschner Manikandan Loganathan

C22F 1/043C22C 21/02C22C 21/04

PatentIndex Score

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References

Claims

Abstract

An Al casting alloy contains at least five of the following alloy components: Si: 2.5 to 7.5 wt.-%, Mg: 0.3 to 0.8 wt.-%, Cr: 0.10 to 0.35 wt.-%, Fe: 0.05 to 0.25 wt.-%, Mn: 0.1 to 0.8 wt.-%, Cu: 0.05 to 0.3 wt.-%, Sr: 0.01 to 0.06 wt.-%, Zr: <0.006 wt.-%, Zn: 0.05 to 0.3 wt.-%, Admixtures (in total): <0.2 wt.-%, supplemented to 100 wt.-% with Al, in each instance.

Claims

exact text as granted — not AI-modified

1 . An Al casting alloy that contains at least five of the following alloy components
 Si: 2.5 to 7.5 wt.-%,   Mg: 0.3 to 0.8 wt.-%,   Cr: 0.10 to 0.35 wt.-%,   Fe: 0.05 to 0.25 wt.-%,   Mn: 0.1 to 0.8 wt.-%,   Cu: 0.05 to 0.3 wt.-%,   Sr: 0.01 to 0.06 wt.-%,   Zr: &lt;0.006 wt.-%,   Zn: 0.05 to 0.3 wt.-%,   Admixtures (in total): &lt;0.2 wt.-%,   supplemented to 100 wt.-% with Al, in each instance.   
     
     
         2 . The Al casting alloy according to  claim 1 , wherein Si is contained at a content of at least or more than 2.5 wt.-%, preferably of at least or of more than 2.6 wt.-%, particularly preferably of at least or of more than 2.7 wt.-%, very particularly preferably of at least or of more than 2.8 wt.-%, even more preferably of at least or of more than 2.9 wt.-%. 
     
     
         3 . The Al casting alloy according to  claim 1 , wherein Si is contained at a content of maximally or of less than 3.5 wt.-%, preferably of maximally or of less than 3.4 wt.-%, particularly preferably of maximally or of less than 3.3 wt.-%, very particularly preferably of maximally or of less than 3.2 wt.-%, even more preferably of maximally or of less than 3.1 wt.-%. 
     
     
         4 . The Al casting alloy according to  claim 1 , wherein Si is contained at a content of at least or of more than 4.5 wt.-%, preferably of at least or of more than 4.6 wt.-%, particularly preferably of at least or of more than 4.7 wt.-%, very particularly preferably of at least or of more than 4.8 wt.-%, even more preferably of at least or of more than 4.9 wt.-%. 
     
     
         5 . The Al casting alloy according to  claim 1 , wherein Si is contained at a content of maximally or of less than 5.5 wt.-%, preferably of maximally or of less than 5.4 wt.-%, particularly preferably of maximally or of less than 5.3 wt.-%, very particularly preferably of maximally or of less than 5.2 wt.-%, even more preferably of maximally or of less than 5.1 wt.-%. 
     
     
         6 . The Al casting alloy according to  claim 1 , wherein Si is contained at a content of at least or of more than 6.5 wt.-%, preferably of at least or of more than 6.6 wt.-%, particularly preferably of at least or of more than 6.7 wt.-%, very particularly preferably of at least or of more than 6.8 wt.-%, even more preferably of at least or of more than 6.9 wt.-%. 
     
     
         7 . The Al casting alloy according to  claim 1 , wherein Si is contained at a content of maximally or of less than 7.5 wt.-%, preferably of maximally or of less than 7.4 wt.-%, particularly preferably of maximally or of less than 7.3 wt.-%, very particularly preferably of maximally or of less than 7.2 wt.-%, even more preferably of maximally or of less than 7.1 wt.-%. 
     
     
         8 . The Al casting alloy according to  claim 1 , wherein Mg is contained at a content of at least or of more than 0.3 wt.-%, preferably of at least or of more than 0.35 wt.-%, particularly preferably of at least or of more than 0.4 wt.-%, very particularly preferably of at least or of more than 0.45 wt.-%, even more preferably of at least or of more than 0.5 wt.-%. 
     
     
         9 . The Al casting alloy according to  claim 1 , wherein Mg is contained at a content of maximally or of less than 0.8 wt.-%, preferably of maximally or of less than 0.75 wt.-%, particularly preferably of maximally or of less than 0.7 wt.-%, very particularly preferably of maximally or of less than 0.65 wt.-%, even more preferably of maximally or of less than 0.60 wt.-%, even more preferably of maximally or of less than 0.55 wt.-%, even more preferably of maximally or of less than 0.50 wt.-%. 
     
     
         10 . The Al casting alloy according to  claim 1 , wherein Mn is contained at a content of at least or of more than 0.1 wt.-%, preferably of at least or of more than 0.2 wt.-%, particularly preferably of at least or of more than 0.3 wt.-%, very particularly preferably of at least or of more than 0.4 wt.-%. 
     
     
         11 . The Al casting alloy according to  claim 1 , wherein Mn is contained at a content of maximally or of less than 0.8 wt.-%, preferably of maximally or of less than 0.75 wt.-%, particularly preferably of maximally or of less than 0.7 wt.-%, very particularly preferably of maximally or of less than 0.65 wt.-%, even more preferably of maximally or of less than 0.60 wt.-%, even more preferably of maximally or of less than 0.55 wt.-%, even more preferably of maximally or of less than 0.50 wt.-%, even more preferably of maximally or of less than 0.45 wt.-%, even more preferably of maximally or of less than 0.40 wt.-%. 
     
     
         12 . The Al casting alloy according to  claim 1 , wherein Cr is contained at a content of at least or of more than 0.25 wt.-%, preferably of at least or of more than 0.26 wt.-%, particularly preferably of at least or of more than 0.27 wt.-%, very particularly preferably of at least or of more than 0.28 wt.-%, even more preferably of at least or of more than 0.29 wt.-%, even more preferably of at least or of more than 0.30 wt.-%. 
     
     
         13 . The Al casting alloy according to  claim 12 , wherein Cr is contained at a content of maximally or of less than 0.35 wt.-%, preferably of maximally or of less than 0.34 wt.-%, particularly preferably of maximally or of less than 0.33 wt.-%, very particularly preferably of maximally or of less than 0.32 wt.-%, even more preferably of maximally or of less than 0.31 wt.-%, even more preferably of maximally or of less than 0.30 wt.-%. 
     
     
         14 . The Al casting alloy according to  claim 1 , wherein Cr is contained at a content of at least or of more than 0.10 wt.-%, preferably of at least or of more than 0.11 wt.-%, particularly preferably of at least or of more than 0.12 wt.-%, very particularly preferably of at least or of more than 0.13 wt.-%, even more preferably of at least or of more than 0.14 wt.-%, even more preferably of at least or of more than 0.15 wt.-%. 
     
     
         15 . The Al casting alloy according to  claim 14 , wherein Cr is contained at a content of maximally or of less than 0.20 wt.-%, preferably of maximally or of less than 0.19 wt.-%, particularly preferably of maximally or of less than 0.18 wt.-%, very particularly preferably of maximally or of less than 0.17 wt.-%, even more preferably of maximally or of less than 0.16 wt.-%, even more preferably of maximally or of less than 0.15 wt.-%. 
     
     
         16 . The Al casting alloy according to  claim 1 , wherein Fe is contained at a content of at least or of more than 0.05 wt.-%, preferably of at least or of more than 0.07 wt.-%, particularly preferably of at least or of more than 0.09 wt.-%, very particularly preferably of at least or of more than 0.11 wt.-%, even more preferably of at least or of more than 0.13 wt.-%, even more preferably of at least or of more than 0.15 wt.-%. 
     
     
         17 . The Al casting alloy according to  claim 1 , wherein Fe is contained at a content of maximally or of less than 0.25 wt.-%, preferably of maximally or of less than 0.23 wt.-%, particularly preferably of maximally or of less than 0.21 wt.-%, very particularly preferably of maximally or of less than 0.19 wt.-%, even more preferably of maximally or of less than 0.17 wt.-%, even more preferably of maximally or of less than 0.15 wt.-%. 
     
     
         18 . The Al casting alloy according to  claim 1 , wherein Cu is contained at a content of at least or of more than 0.05 wt.-%, preferably of at least or of more than 0.10 wt.-%, particularly preferably of at least or of more than 0.15 wt.-%, very particularly preferably of at least or of more than 0.20 wt.-%. 
     
     
         19 . The Al casting alloy according to  claim 1 , wherein Cu is contained at a content of maximally or of less than 0.30 wt.-%, preferably of maximally or of less than 0.25 wt.-%, particularly preferably of maximally or of less than 0.20 wt.-%, very particularly preferably of maximally or of less than 0.15 wt.-%. 
     
     
         20 . The Al casting alloy according to  claim 1 , wherein Sr is contained at a content of at least or of more than 0.010 wt.-%, preferably of at least or of more than 0.020 wt.-%, particularly preferably of at least or of more than 0.030 wt.-%, very particularly preferably of at least or of more than 0.035 wt.-%, even more preferably of at least or of more than 0.040 wt.-%. 
     
     
         21 - 29 . (canceled)

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