Cold-workable corrosion-resistant chromium steel
Abstract
A cold-workable, corrosion-resistant ferritic chromium steel, comprising 0,005 to 0.1% of carbon, 0.2 to 1.2% of silicon, 0,4 to 2.0% of manganese, 8 to 20% of chromium, 0.1 to 1.2% of molybdenum, 0.01 to 0.5% of nickel, 0.5 to 2.0% of copper, 0.001 to 0.6% of bismuth, 0.002 to 0.01% of vanadium, 0.002 to 0.1% of titanium, 0.002 to 0.1% of niobium, 0.15 to 0.8% of sulfur and 0.001 to 0.08% of sulfur and 0.001 to 0.08% of nitrogen, remainder iron including smelting-related impurities, is suitable as a material for precision-mechanics applications and precision appliances, in particular spinning and spraying nozzles, tips and heads for writing implements, on account of its good mechanical processibility, in particular its good machinability, its good wear resistance and surface quality.
Claims
exact text as granted — not AI-modified1 . A chromium steel, comprising
0.005 to 0.1% of carbon 0.2 to 1.2% of silicon 0.4 to 2.0% of manganese 0.05 to 1.2% of molybdenum 0.01 to 0.5% of nickel and, individually or in combination with one another, 0.5 to 2.0% of copper 0.001 to 0.6% of bismuth 0.002 to 0.10% of vanadium 0.002 to 0.10% of titanium 0.002 to 0.10% of niobium 0.15 to 0.80% of sulfur up to 0.05% of aluminum up to 0.08% of nitrogen, remainder iron
2 . The chromium steel as claimed in claim 1 , comprising
0.002 to 0.06% of carbon 0.3 to 0.8% of silicon 0.5 to 1.6% of manganese 11 to 18% of chromium 0.05 to 0.8% of molybdenum 0.01 to 0.1% of nickel and, individually or in combination with one another, 0.55 to 1.60% of copper 0.002 to 0.22% of bismuth 0.005 to 0.08% of vanadium 0.005 to 0.08% of titanium 0.005 to 0.08% of niobium 0.15 to 0.65% of sulfur, remainder iron.
3 . The chromium steel as claimed in claim 1 or 2 , characterized in that it satisfies at least one of the following three conditions:
K1
=
%
T
i
+
%
V
+
%
N
b
K1
=
0.005
t
o
0.15
K2
=
%
S
10
*
(
%
C
+
%
N
)
K2
=
0.8
t
o
3.8
K3
=
%
C
u
%
C
u
+
M
n
K3
=
0.25
t
o
0.85
4 . The use of the steel as claimed in one of claims 1 to 3 for the production of objects by machining.
5 . The use of the steel as claimed in one of claims 1 to 3 for the production of objects by micromachining.
6 . The use of the steel as claimed in one of claims 1 to 3 as material for the production of precision appliances, microcomponents, pen tips and heads, printer nozzles, metering devices and electronic components with openings and recesses of ultra small dimensions.Join the waitlist — get patent alerts
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