Specification for 18% nickel-cobalt-molybdenum maraging steel forging stock, forgings, bars and parts (1800 MPa: double vaccuum melted)

2015 ◽  
Keyword(s):  
Maraging Steel ◽  
Nickel Cobalt ◽  
Steel Forging

Development of new low nickel, cobalt free maraging steel

1991 ◽  
Vol 7 (12) ◽  
pp. 1082-1088 ◽  
Author(s):  
K. T. Tharian ◽  
D. Sivakumar ◽  
R. Ganesan ◽  
P. Balakrishnan ◽  
P. P. Sinha
Keyword(s):  
Maraging Steel ◽  
Nickel Cobalt

CARPENTER NIMARK 250

Alloy Digest ◽  
1986 ◽  
Vol 35 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Maraging Steel ◽  
Aging Treatment ◽  
Heat Treating ◽  
Low Carbon ◽  
Temperature Performance ◽  
Nickel Cobalt

Abstract CARPENTER NIMARK 250 is a vacuum-melted, low-carbon nickel-cobalt-molybdenum maraging steel in which yield strengths in excess of 240,000 psi can be developed by a simple aging treatment following a solution anneal. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-417. Producer or source: Carpenter.

Microstructure of resistance spot welding of maraging steels

1990 ◽  
Vol 48 (4) ◽  
pp. 900-901
Author(s):  
I. Neuman ◽  
S.F. Dirnfeld ◽  
I. Minkoff
Keyword(s):  
Maraging Steel ◽  
Spot Welding ◽  
Lath Martensite ◽  
Base Material ◽  
Aging Treatment ◽  
High Strength ◽  
Maraging Steels ◽  
Heat Treated ◽  
Current Cycle ◽  
Welding Processes

Experimental work on the spot welding of Maraging Steels revealed a surprisingly low level of strength - both in the as welded and in aged conditions. This appeared unusual since in the welding of these materials by other welding processes (TIG,MIG) the strength level is almost that of the base material. The maraging steel C250 investigated had the composition: 18wt%Ni, 8wt%Co, 5wt%Mo and additions of Al and Ti. It has a nominal tensile strength of 250 KSI. The heat treated structure of maraging steel is lath martensite the final high strength is reached by aging treatment at 485°C for 3-4 hours. During the aging process precipitation takes place of Ni3Mo and Ni3Ti and an ordered solid solution containing Co is formed.Three types of spot welding cycles were investigated: multi-pulse current cycle, bi-pulse cycle and single pulsle cycle. TIG welded samples were also tested for comparison.The microstructure investigations were carried out by SEM and EDS as well as by fractography. For multicycle spot welded maraging C250 (without aging), the dendrites start from the fusion line towards the nugget centre with an epitaxial growth region of various widths, as seen in Figure 1.

Wonders in Steel Forging

1920 ◽  
Vol 123 (1) ◽  
pp. 10-11
Author(s):  
A. R. Surface
Keyword(s):  
Steel Forging

MAGNETIC PROPERTIES OF NICKEL-COPPER AND NICKEL-COBALT ALLOYS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1937-C8-1938 ◽  
Author(s):  
D. C. Jiles ◽  
T. T. Chang ◽  
D. R. Hougen ◽  
R. Ranjan
Keyword(s):  
Magnetic Properties ◽  
Cobalt Alloys ◽  
Nickel Cobalt ◽  
Nickel Copper
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