US2005002820A1PendingUtilityA1
Steel for metal-cutting tools
Est. expiryJun 23, 2023(expired)· nominal 20-yr term from priority
C22C 38/24C22C 38/22C22C 38/06C22C 38/001
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Claims
Abstract
A steel for metal-cutting tools comprising carbon, chromium, molybdenum, vanadium, aluminum and nitrogen in certain concentration ranges. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
Claims
exact text as granted — not AI-modified1 . A steel for metal-cutting tools, comprising in % by weight:
C
from about 0.88 to about 1.12
Cr
from about 3.4 to about 4.5
Mo
from about 2.5 to about 3.0
V
from about 0.7 to about 1.0
Al
from about 0.04 to about 0.1
N
from about 0.02 to about 0.12
Si
from 0 to about 0.42
Mn
from 0 to about 0.44
S
from 0 to about 0.3
the balance being Fe and accompanying and contaminating elements, provided that up to about 0.45% by weight of V may be replaced by an equal concentration of Nb.
2 . The steel of claim 1 , wherein the steel comprises one or more elements in the following concentrations in % by weight:
C
from about 0.93 to about 1.07
Si
from about 0.15 to about 0.42
Mn
from about 0.15 to about 0.44
S
from about 0.001 to about 0.3
Al
from about 0.05 to about 0.07
N
from about 0.03 to about 0.1.
3 . The steel of claim 1 , wherein the steel comprises in % by weight:
C
from about 0.93 to about 1.07
Si
from about 0.15 to about 0.42
Mn
from about 0.15 to about 0.44
S
from about 0.001 to about 0.3
Al
from about 0.05 to about 0.07
N
from about 0.03 to about 0.1.
4 . The steel of claim 1 , wherein the steel comprises not more than about 0.03% by weight of P.
5 . The steel of claim 2 , wherein the steel comprises not more than about 0.03% by weight of P.
6 . The steel of claim 1 , wherein the ratio of aluminum to nitrogen (Al/N) is from about 0.5 to about 1.9.
7 . The steel of claim 2 , wherein the ratio of aluminum to nitrogen (Al/N) is from about 0.5 to about 1.9.
8 . The steel of claim 3 , wherein the ratio of aluminum to nitrogen (Al/N) is from about 0.5 to about 1.9.
9 . The steel of claim 1 , comprising in % by weight:
C
about 0.96
Cr
about 4.01
Mo
about 2.78
V
about 0.88
Al
about 0.082
N
about 0.086
Si
about 0.27
Mn
about 0.24
S
about 0.009.
10 . A metal cutting tool comprising the steel of claim 1 .
11 . A metal cutting tool comprising the steel of claim 2 .
12 . A metal cutting tool comprising the steel of claim 3 .
13 . A metal cutting tool comprising the steel of claim 9 .
14 . A saw blade comprising the steel of claim 1 .
15 . A saw blade comprising the steel of claim 2 .
16 . The saw blade of claim 14 , wherein the saw blade comprises teeth and the teeth have a hardness (HRC) of greater than about 63 in at least a teeth tip area thereof.
17 . The saw blade of claim 15 , wherein the saw blade comprises teeth and the teeth have a hardness (HRC) of greater than about 63 in at least a teeth tip area thereof.
18 . The saw blade of claim 14 , wherein the saw blade comprises teeth and the teeth have a hardness (HRC) of greater than about 64 in at least a teeth tip area thereof.
19 . The saw blade of claim 15 , wherein the saw blade comprises teeth and the teeth have a hardness (HRC) of greater than about 64 in at least a teeth tip area thereof.
20 . The saw blade of claim 14 , wherein the saw blade comprises a circular saw blade.Join the waitlist — get patent alerts
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