INVESTIGATION OF Fe-Mn-Cr-N-C SYSTEM FOR HEAT RESISTANCE AND OXIDATION RESISTANCE BETWEEN 1200 F AND 2000 F. Period covered: April 1, 1957 to March 31, 1958

Technical Report · Mon Sep 15 00:00:00 EDT 1958

OSTI ID:4292532

Tarwater, J P; Dulis, E J

Austenitic Cr-Mn-C -N steels containing various combinntions of V, Nb, W, and/or Mo had, after heat treating, room- and elevated-temperature tensile properties and creep-rupture strengths that compared fuvorably with those of such superalloys as A286 and Inco 901. Proper selection of composition and heattreatment enabled development of adequate ductility in tension and creep rupture although a marked decrease in impact properties could not be avoided. Calcium additions improved the creep rupture strength of CrMn-C-N steels thnt did not contain additions of strengthening elements (V, Hb, Mo, and W). A silicon addition of about 2% to high-chromium Cr-Mn-C-N steels increased the oxidation resistance at 2000 and 2200 F so that these steels compared favorably with Type 310 stainless steel. Both strengthened and unstrengthened austenitic Cr-Mn- C- N steels could be hot-rolled to sheets without the formation of edge cracks or surface defects, but rolling pressures higher than those for Type 310 stainless steel were required. (auth)

• Research Organization: Crucible Steel Co. of America, Pittsburgh
• DOE Contract Number: AF33(616)-3318
• NSA Number: NSA-13-002996
• OSTI ID: 4292532
• Report Number(s): WADC-TR-57-242(Pt.II); AD-2035
• Resource Relation: Other Information: Project title: METALLIC MATERIALS; Task title: HIGH TEMPERATURE ALLOY. Orig. Receipt Date: 31-DEC-59
• Country of Publication: United States
• Language: English

Related Subjects

METALLURGY AND CERAMICS
ADDITIVES
AUSTENITE
CALCIUM
CARBIDES
CHROMIUM STEELS
COBALT ALLOYS
CRACKS
CREEP
DEFECTS
DUCTILITY
EFFICIENCY
FAILURES
HEAT TREATMENTS
HIGH TEMPERATURE
HOT WORKING
IMPACT SHOCK
IRON ALLOYS
MOLYBDENUM
NICKEL ALLOYS
NIOBIUM
NITRIDES
OXIDATION
PRESSURE
ROLLING
SHEETS
SILICON
STABILITY
STANDARDS
STRESSES
SUPERALLOYS
SURFACES
TEMPERATURE
TENSILE PROPERTIES
TUNGSTEN
VANADIUM