Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
A wear and corrosion resistant steel characterized by superior rollings contact fatigue life and low retained austenite consisting essentially of: ______________________________________
C about 0.8 - 1.6%
Si about 0.50% Max.
Mn about 0.50% Max.
S about 0.10% Max.
P about 0.015% Max.
Cr about 12 - 20%
Mo about 2 - 5%
W about Up to 3.0%
V about 0.5% - 3.0%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental
Balance
impurities
______________________________________ and having been made by vacuum arc remelting electrodes prepared by vacuum induction melting.
Claim 2
Dependent Claim
111 words
A wear and corrosion resistant steel characterized by superior rollings contact fatigue life and low retained austenite consisting essentially of: ______________________________________
C about 0.8 - 1.6%
Si about 0.50% Max.
Mn about 0.50% Max.
S about 0.10% Max.
P about 0.015% Max.
Cr about 12 - 20%
Mo about 2 - 5%
W about Up to 3.0%
V about 0.5% - 3.0%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental
Balance
impurities
______________________________________ and having been made by vacuum arc remelting electrodes prepared by vacuum induction melting.
Claim 3
Dependent Claim
79 words
A wear and corrosion resistant steel as claimed in claim 1 having the composition: ______________________________________
C about 1.0%-1.2%
Si about 0.2-0.4%
Mn about 0.3-0.5%
S about 0.010% Max.
P about 0.015% Max.
Cr about 14%-16%
Mo about 1.5%-2.5%
W about 2.3%-2.7%
V about 1%-1.5%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental Balance
impurities
______________________________________
Claim 4
Dependent Claim
27 words
A steel as claimed in claim 1 made by vaccum induction melting the steel and casting into electrodes and thereafter vacuum arc remelting said electrodes into ingots.
Claim 5
Dependent Claim
27 words
A steel as claimed in claim 2 made by vacuum induction melting the steel and casting into electrodes and thereafter vacuum arc remelting said electrodes into ingots.
Claim 6
Dependent Claim
18 words
A steel as claimed in claim 3 or 4 wherein the retained austenite does not exceed about 5%.
Claim 7
Dependent Claim
123 words
A ferrous alloy bearing consisting essentially of: ______________________________________
C about 0.8 - 1.6%
Si about 0.50% Max.
Mn about 0.50% Max.
S about 0.10% Max.
P about 0.015% Max.
Cr about 12 - 20%
Mo about 2 - 5%
W about Up to 3.0%
V about 0.5% - 3.0%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental
Balance
impurities
______________________________________ said bearing being characterized by hot hardness, wear resistance and corrosion resistance at elevatd temperatures, low retained austenite and by superior rolling contact fatigue life and having been made by vacuum arc remelting electrodes prepared by vacuum induction melting.
Claim 8
Dependent Claim
123 words
A ferrous alloy bearing consisting essentially of: ______________________________________
C about 0.8 - 1.6%
Si about 0.50% Max.
Mn about 0.50% Max.
S about 0.10% Max.
P about 0.015% Max.
Cr about 12 - 20%
Mo about 2 - 5%
W about Up to 3.0%
V about 0.5% - 3.0%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental
Balance
impurities
______________________________________ said bearing being characterized by hot hardness, wear resistance and corrosion resistance at elevatd temperatures, low retained austenite and by superior rolling contact fatigue life and having been made by vacuum arc remelting electrodes prepared by vacuum induction melting.
Claim 9
Dependent Claim
77 words
A ferrous alloy bearing as claimed in claim 6 having the composition: ______________________________________
C about 1.0%-1.2%
Si about 0.2-0.4%
Mn about 0.3-0.5%
S about 0.010% Max.
P about 0.015% Max.
Cr about 14%-16%
Mo about 1.5%-2.5%
W about 2.3%-2.7%
V about 1%-1.5%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental Balance
impurities
______________________________________
Claim 10
Dependent Claim
35 words
A ferrous alloy bearing as claimed in claim 6 or 7 made by vacuum induction melting the steel and casting into electrodes, vacuum arc remelting said electrodes into ingots and forming said ingots into bearings.
Claim 11
Dependent Claim
20 words
A ferrous alloy bearing as claimed in claim 6 or 7 wherein the retained austenite does not exceed about 5%.
Claim 12
Dependent Claim
121 words
A ferrous alloy article consisting essentially of: ______________________________________
C about 0.8 - 1.6%
Si about 0.50% Max.
Mn about 0.50% Max.
S about 0.10% Max.
P about 0.015% Max.
Cr about 12 - 20%
Mo about 2 - 5%
W about Up to 3.0%
V about 0.5% - 3.0%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental
Balance
impurities
______________________________________ said article being characterized by hot hardness wear resistance and corrosion resistance at elevated temperatures and by superior rolling contact fatigue life, and having been made by vacuum arc remelting an electrode prepared by vacuum induction melting.
Claim 13
Dependent Claim
121 words
A ferrous alloy article consisting essentially of: ______________________________________
C about 0.8 - 1.6%
Si about 0.50% Max.
Mn about 0.50% Max.
S about 0.10% Max.
P about 0.015% Max.
Cr about 12 - 20%
Mo about 2 - 5%
W about Up to 3.0%
V about 0.5% - 3.0%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental
Balance
impurities
______________________________________ said article being characterized by hot hardness wear resistance and corrosion resistance at elevated temperatures and by superior rolling contact fatigue life, and having been made by vacuum arc remelting an electrode prepared by vacuum induction melting.
Claim 14
Dependent Claim
77 words
A ferrous alloy article as claimed in claim 10 having the composition: ______________________________________
C about 1.0%-1.2%
Si about 0.2-0.4%
Mn about 0.3-0.5%
S about 0.010% Max.
P about 0.015% Max.
Cr about 14%-16%
Mo about 1.5%-2.5%
W about 2.3%-2.7%
V about 1%-1.5%
Ti about Up to 0.5%
Al about 0.03% Max.
Ni about 0.50% Max.
Co about 0.50% Max.
Cu about 0.50% Max.
B about 0.05% Max.
N about 0.05% Max.
Fe + incidental Balance
impurities
______________________________________
Claim 15
Dependent Claim
50 words
A ferrous alloy article as claimed in claim 10 or 11 made by vacuum induction melting the steel and casting into electrodes, vacuum arc remelting the electrodes into ingots and forming said ingots into said alloy article in the temperature range 1050° to 1190° C. after thermal homogenizing said ingots.