US2004031353A1PendingUtilityA1
Material with high ballistic protective effect
Est. expiryDec 19, 2021(expired)· nominal 20-yr term from priority
Inventors:Horst Saiger
C22C 38/22F41H 5/0442C22C 38/44C22C 38/24C22C 38/40
31
PatentIndex Score
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Cited by
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0
Claims
Abstract
A process for making an article with ballistic protective effect and an article obtainable thereby, as well as a method of providing an object with ballistic protection provided by a corresponding material. The alloys used for making the article comprise the elements C, Si, Mn, Cr, Ni, Mo and V within certain concentration ranges and contain a limited amount of impurities. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A process for making an article with ballistic protective effect, comprising providing an alloy which comprises, in percent by weight:
Carbon (C)
0.26
to
0.79;
Silicon (Si)
0.2
to
1.2;
Manganese (Mn)
0.2
to
0.9;
Chromium (Cr)
1.1
to
7.94;
Molybdenum (Mo)
0.56
to
3.49;
Vanadium (V)
0.26
to
1.74;
the balance being iron (Fe) as well as accompanying elements and impurities, provided that the total concentration of phosphorus (P) and sulfur (S) is less than 0.025:
P+S <0.025;
the concentration of nickel (Ni) is less than 0.28:
Ni<0.28;
and the total concentration of arsenic (As), antimony (Sb), bismuth (B), tin (Sn), zinc (Zn) and boron (B) is less than 0.011:
As+Sb+Bi+Sn+Zn+B< 0.011;
and shaping the alloy into said article.
2 . The process of claim 1 , wherein the alloy comprises one or more of C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.36
to
0.64;
Si
0.36
to
0.9;
Mn
0.36
to
0.7;
Cr
1.7
to
5.95;
Mo
1.05
to
2.9;
V
0.36
to
1.25.
3 . The process of claim 1 , wherein the alloy comprises one or more of C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.41
to
0.58;
Si
0.41
to
0.68;
Mn
0.41
to
0.59;
Cr
2.61
to
5.2;
Mo
1.3
to
2.7;
V
0.39
to
0.83.
4 . The process of claim 2 , wherein the alloy comprises one or more of C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.41
to
0.58;
Si
0.41
to
0.68;
Mn
0.41
to
0.59;
Cr
2.61
to
5.2;
Mo
1.3
to
2.7;
V
0.39
to
0.83.
5 . The process of claim 2 , wherein the concentration of sulfur in the alloy is less than 0.005 percent by weight.
6 . The process of claim 1 , which further comprises subjecting the alloy to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
7 . The process of claim 4 , which further comprises subjecting the alloy to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
8 . The process of claim 1 , which further comprises subjecting the article to a heat treatment to a strength of higher than 1800 N/mm 2 .
9 . The process of claim 2 , which further comprises subjecting the article to a heat treatment to a strength of higher than 2000 N/mm 2 .
10 . The process of claim 7 , which further comprises subjecting the article to a heat treatment to a strength of higher than 2100 N/mm 2 .
11 . The process of claim 1 , wherein the alloy comprises C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.41
to
0.58;
Si
0.41
to
0.68;
Mn
0.41
to
0.59;
Cr
2.61
to
5.2;
Mo
1.3
to
2.7;
V
0.39
to
0.83;
and wherein the process further comprises subjecting the alloy to a technology selected from ladle metallurgy, vacuum treatment vacuum smelting, vacuum arc remelting, clectroslag remelting, powder metallurgy or any combination thereof, and subjecting the article to a heat treatment to a strength of higher than 2000 N/mm 2 .
12 . The process of claim 11 , wherein the concentration of sulfur in the alloy is less than 0.005 percent by weight.
13 . An article obtainable by the process of claim 1 .
14 . An article obtainable by the process of claim 11 .
15 . An article for providing ballistic protection, wherein the article comprises an alloy which comprises, in percent by weight:
Carbon (C)
0.26
to
0.79;
Silicon (Si)
0.2
to
1.2;
Manganese (Mn)
0.2
to
0.9;
Chromium (Cr)
1.1
to
7.94;
Molybdenum (Mo)
0.56
to
3.49;
Vanadium (V)
0.26
to
1.74;
the balance being iron (Fe) as well as accompanying elements and impurities, provided that the total concentration of phosphorus (P) and sulfur (S) is less than 0.025:
P+S< 0.025;
the concentration of nickel (Ni) is less than 0.28:
Ni<0.28;
and the total concentration of arsenic (As), antimony (Sb), bismuth (Bi), tin (Sn), zinc (Zn) and boron (B) is less than 0.011;
As+Sb+Bi+Sn+Zn+B< 0.011;
and wherein the article has a strength of higher than 1800 N/mm 2 .
16 . The article of claim 15 , wherein the article has a toughness at room temperature of higher than SEP 150 J.
17 . The article of claim 16 , wherein the article has a strength of higher than 2000 N/mm 2 .
18 . The article of claim 17 , wherein the article has a toughness at room temperature of higher than SEP 185 J.
19 . The article of claim 18 , wherein the article has a strength of higher than 2100 N/mm 2 .
20 . The article of claim 19 , wherein the article has a toughness at room temperature of higher than SEP 245 J.
21 . The article of claim 16 , wherein the article comprises a plate.
22 . The article of claim 21 , wherein the plate has a thickness of at least 5 mm.
23 . The article of claim 17 , wherein the alloy comprises one or more of C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.36
to
0.64;
Si
0.36
to
0.9;
Mn
0.36
to
0.7;
Cr
1.7
to
5.95;
Mo
1.05
to
2.9;
V
0.36
to
1.25.
24 . The article of claim 19 , wherein the alloy comprises one or more of C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.41
to
0.58;
Si
0.41
to
0.68;
Mn
0.41
to
0.59;
Cr
2.61
to
5.2;
Mo
1.3
to
2.7;
V
0.39
to
0.83.
25 . The article of claim 20 in the form of a plate having a thickness of at least 5 mm, wherein the alloy comprises C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.41
to
0.58;
Si
0.41
to
0.68;
Mn
0.41
to
0.59;
Cr
2.61
to
5.2;
Mo
1.3
to
2.7;
V
0.39
to
0.83;
and wherein the alloy has been subjected to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
26 . A method of providing an object with ballistic protection, comprising covering at least one of the surfaces of the object with a material of an alloy which comprises, in percent by weight:
Carbon (C)
0.26
to
0.79;
Silicon (Si)
0.2
to
1.2;
Manganese (Mn)
0.2
to
0.9;
Chromium (Cr)
1.1
to
7.94;
Molybdenum (Mo)
0.56
to
3.49;
Vanadium (V)
0.26
to
1.74;
the balance being iron (Fe) as well as accompanying elements and impurities, provided that the total concentration of phosphorus (P) and sulfur (S) is less than 0.025:
P+S< 0.025;
the concentration of nickel (Ni) is less than 0.28:
Ni<0.28;
and the total concentration of arsenic (As), antimony (Sb), bismuth (Bi), tin (Sn), zinc (Zn) and boron (B) is less than 0.011:
As+Sb+Bi+Sn+Zn+B< 0.011.
27 . The method of claim 26 , wherein the alloy comprises C, Si, Mn, Cr, Mo, and V in the following concentrations, in percent by weight:
C
0.36
to
0.64;
Si
0.36
to
0.9;
Mn
0.36
to
0.7;
Cr
1.7
to
5.95;
Mo
1.05
to
2.9;
V
0.36
to
1.25.
28 . The method of claim 26 , wherein the alloy has been subjected to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
29 . The method of claim 27 , wherein the material has a strength of higher than 1800 N/mm 2 and a toughness at room temperature of higher than SEP 150 J.
30 . The method of claim 29 , wherein the material has a strength of higher than 2000 N/mm 2 .
31 . The method of claim 30 , wherein the material has a toughness at room temperature of higher than SEP 185 J.
32 . A process for making an article with ballistic protective effect, comprising providing an alloy which comprises, in percent by weight:
Carbop (C)
0.3
to
0.6;
Silicon (Si)
0.08
to
0.59;
Manganese (Mn)
0.1
to
0.6;
Chromium (Cr)
0.9
to
1.5;
Nickel (Ni)
2.4
to
5.5;
the balance being iron (Fe) as well as accompanying elements and impurities, provided that the total concentration of phosphorus (P) and sulfur (S) is less than 0.025:
P+S< 0025;
the concentration of molybdenum (Mo) is less than 0.34 and the concentration of tungsten (W) is less than 0.29, with the total of the concentration of molybdenum and the concentration of tungsten divided by 2 not exceeding 0.38:
Mo
<
0.34
W
<
0.29
;
Mo
+
W
2
<
0.38
;
and the total concentration of arsenic (As), antimony (Sb), bismuth (Bi), tin (Sn), zinc (Zn) and boron (B) is less than 0.011;
As+Sb+Bi+Sn+Zn+B< 0.011;
and shaping the alloy into said article.
33 . The process of claim 32 , wherein the alloy comprises one or more of C, Si, Mn, Cr, and Ni in the following concentrations, in percent by weight:
C
0.36
to
0.54;
Si
0.11
to
0.39;
Mn
0.18
to
0.49;
Cr
1.15
to
1.4;
Ni
2.56
to
4.9.
34 . The process of claim 32 , wherein the alloy comprises one or more of C, Mn, and Ni in the following concentrations, in percent by weight:
C
0.41
to
0.49;
Mn
0.25
to
0.38;
Ni
2.9
to
3.9.
35 . The process of claim 33 , wherein the alloy comprises one or more of C, Mn, and Ni in the following concentrations, in percent by weight:
C
0.41
to
0.49;
Mn
0.25
to
0.38;
Ni
2.9
to
3.9.
36 . The process of claim 33 , wherein the concentration of sulfur in the alloy is less than 0.005 percent by weight.
37 . The process of claim 32 , which further comprises subjecting the alloy to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
38 . The process of claim 35 , which further comprises subjecting the alloy to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
39 . The process of claim 32 , which further comprises subjecting the article to a heat treatment to a strength of higher than 1800 N/mm 2 .
40 . The process of claim 33 which further comprises subjecting the article to a heat treatment to a strength of higher than 2000 N/mm 2 .
41 . The process of claim 38 , which further comprises subjecting the article to a heat treatment to a strength of higher than 2100 N/mm 2 .
42 . The process of claim 32 , wherein the alloy comprises C, Si, Mn, Cr, and Ni in the following concentrations, in percent by weight:
C
0.41
to
0.49;
Si
0.11
to
0.39;
Mn
0.25
to
0.38;
Cr
1.15
to
1.4;
Ni
2.9
to
3.9;
and wherein the process further comprises subjecting the alloy to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof, and subjecting the article to a heat treatment to a strength of higher than 2000 N/mm 2 .
43 . The process of claim 42 , wherein the concentration of sulfur in the alloy is less than 0.005 percent by weight.
44 . An article obtainable by the process of claim 32 .
45 . An article obtainable by the process of claim 42 .
46 . An article for providing ballistic protection, wherein the article comprises an alloy which comprises, in percent by weight:
Carbon (C)
0.3
to
0.6;
Silicon (Si)
0.08
to
0.59;
Manganese (Mn)
0.1
to
0.6;
Chromium (Cr)
0.9
to
1.5;
Nickel (Ni)
2.4
to
5.5;
the balance being iron (Fe) as well as accompanying elements and impurities, provided that the total concentration of phosphorus (P) and sulfur (S) is less than 0.025.
P+S< 0.025;
the concentration of molybdenum (Mo) is less than 0.34 and the concentration of tungsten (W) is less than 0.29, with the total of the concentration of molybdenum and the concentration of tungsten divided by 2 not exceeding 0.38:
Mo
<
0.34
W
<
0.29
;
Mo
+
W
2
<
0.38
;
and the total concentration of arsenic (As), antimony (Sb), bismuth (Bi), tin (Sn), zinc (Zn) and boron (B) is less than 0.011:
As+Sb+Bi+Sn+Zn+B< 0.011;
and wherein the article has a strength of higher than 1800 N/mm 2 .
47 . The article of claim 46 , wherein the article has a toughness at room temperature of higher than SEP 150 J.
48 . The article of claim 47 , wherein the article has a strength of higher than 2000 N/mm 2 .
49 . The article of claim 48 , wherein the article has a toughness at room temperature of higher than SEP 185 J.
50 . The article of claim 49 , wherein the article has a strength of higher than 2100 N/mm 2 .
51 . The article of claim 50 , wherein the article has a toughness at room temperature of higher than SEP 245 J.
52 . The article of claim 47 , wherein the article comprises a plate.
53 . The article of claim 52 , wherein the plate has a thickness of at least 5 mm.
54 . The article of claim 48 , wherein the alloy comprises one or more of C, Si, Mn, Cr, and Ni in the following concentrations, in percent by weight:
C
0.36
to
0.54;
Si
0.11
to
0.39;
Mn
0.18
to
0.49;
Cr
1.15
to
1.4;
Ni
2.56
to
4.9.
55 . The article of claim 50 , wherein the alloy comprises one or more of C, Si, Mn, Cr, and Ni in the following concentrations, in percent by weight:
C
0.41
to
0.49;
Si
0.11
to
0.39;
Mn
0.25
to
0.38;
Cr
1.15
to
1.4;
Ni
2.9
to
3.9.
56 . The article of claim 51 in the form of a plate having a thickness of at least 5 mm, wherein the alloy comprises C, Si, Mn, Cr, and Ni in the following concentrations, in percent by weight:
C
0.41
to
0.49;
Si
0.11
to
0.39;
Mn
0.25
to
0.38;
Cr
1.15
to
1.4;
Ni
2.9
to
3.9;
and wherein the alloy has been subjected to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
57 . A method of providing an object with ballistic protection, comprising covering at least one of the surfaces of the object with a material of an alloy which comprises, in percent by weight:
Carbon (C)
0.3
to
0.6;
Silicon (Si)
0.08
to
0.59;
Manganese (Mn)
0.1
to
0.6;
Chromium (Cr)
0.9
to
1.5;
Nickel (Ni)
2.4
to
5.5;
the balance being iron (Fe) as well as accompanying elements and impurities, provided that the total concentration of phosphors (P) and sulfur (S) is less than 0.025:
P+S< 0.025;
the concentration of molybdenum (Mo) is less than 0.34 and the concentration of tungsten (W) is less than 0.29, with the total of the concentration of molybdenum and the concentration of tungsten divided by 2 not exceeding 0.38:
Mo
<
0.34
W
<
0.29
;
Mo
+
W
2
<
0.38
;
and the total concentration of arsenic (As), antimony (Sb), bismuth (Bi), tin (Sn), zinc (Zn) and boron (B) is less than 0.011:
As+Sb+Bi+Sn+Zn+B < 0.011.
58 . The method of claim 57 , wherein the alloy comprises C, Si, Mu, Cr, and Ni in the following concentrations, in percent by weight:
C
0.36
to
0.54;
Si
0.11
to
0.39;
Mn
0.18
to
0.49;
Cr
1.15
to
1.4;
Ni
2.56
to
4.9.
59 . The method of claim 57 , wherein the alloy has been subjected to a technology selected from ladle metallurgy, vacuum treatment, vacuum smelting, vacuum arc remelting, electroslag remelting, powder metallurgy or any combination thereof.
60 . The method of claim 58 , wherein the material has a strength of higher than 1800 N/mm 2 and a toughness at room temperature of higher than SEP 150 J.
61 . The method of claim 60 , wherein the material has a strength of higher than 2000 N/mm 2 .
62 . The method of claim 61 , wherein the material has a toughness at room temperature of higher than SEP 185 J.Join the waitlist — get patent alerts
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