US2012107170A1PendingUtilityA1
Alloy steel powder and their sintered body
Est. expiryNov 3, 2030(~4.3 yrs left)· nominal 20-yr term from priority
C22C 38/02B22F 3/225C22C 33/0285C22C 38/04C22C 38/42C22C 38/44C22C 38/46C22C 38/50
36
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A steel powder and their sintered body comprise iron as its primary component and further comprise from 1.4 to 2.0% by weight of carbon, less than 1.0% by weight of silicon, less than 1.0% by weight of manganese, from 11.0 to 13.0% by weight of chromium, from 0.3 to 2.3% by weight of titanium, less than 0.75% by weight of a combination of copper and nickel, and less than 5.0% by weight of at least one strengthening element. During sintering, titanium carbide inhibits grain coarsening, whereby the sintering window can be expanded to about 50° C.
Claims
exact text as granted — not AI-modified1 . A steel powder, comprising iron as its primary component and further comprising from 1.4 to 2.0% by weight of carbon, less than 1.0% by weight of silicon, less than 1.0% by weight of manganese, from 11.0 to 13.0% by weight of chromium, from 0.3 to 2.3% by weight of titanium, less than 0.75% by weight of a combination of copper and nickel, and less than 5.0% by weight of at least one strengthening element.
2 . The steel powder according to claim 1 , wherein the strengthening element is selected from a group consisting of molybdenum, vanadium, tungsten, and a combination thereof.
3 . The steel powder according to claim 1 , wherein the strengthening element is from 0.2 to 1.7% by weight.
4 . The steel powder according to claim 1 , wherein a source of carbon is from graphite or carbon black.
5 . The steel powder according to claim 1 , wherein a source of titanium is from titanium powder.
6 . The steel powder according to claim 1 , wherein a source of titanium is from a titanium-containing carbide powder.
7 . The steel powder according to claim 1 , wherein a source of titanium is from a titanium-containing pre-alloyed powder.
8 . The steel powder according to claim 6 , wherein the titanium-containing carbide powder is selected from a group consisting of a titanium carbide powder, a tungsten-doped titanium carbide powder, and a vanadium-doped titanium carbide powder.
9 . The steel powder according to claim 6 , wherein the titanium-containing carbide powder has an average grain size of less than 5 μm.
10 . A sintered body made of the steel powder according to claim 1 .Join the waitlist — get patent alerts
Track US2012107170A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.