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Instrumental steels for coatings

Application

Powders of instrumental steels are intended for the preparation of a cutting and shaping instrument using the hot compaction method, for restoring and reinforcing a die instrument by plasma transfer arc (PTS) hardfacing, creating the working surfaces of a cutting instrument, strengthening cold-rolling rollers by plasma transfer arc hardfacing, and other purposes. The powders are produced by spraying molten metal using gas.

 Power grade Nominal chemical composition, %
Main components Maximum admixtures
Fe C Cr W Mo V Co Si Mn Ni S O
AP-FeW6Mo5 base 1 4 6.5 5 2 - <0.5 0.55 0.4 0.03 0.03
AP-FeW6Mo5-shot blasting base 1 4 6.5 5 2 - <0.6 0.65 2 0.03 n/a
AP-FeW0Mo6V1 base 0.75 4 - 6 1 - <0.4 0.55 0.4 0.03 0.03
AP-FeW0Mo6V1Co8 base 0.75 4 - 6 1 8 <0.4 0.55 0.4 0.03 0.03
AP-FeW0Mo6V3Co8 base 1.2 4 - 6 2.5 8 <0.4 0.55 0.4 0.03 0.03
AP-FeW0Mo2V3Si base 1.2 4 <0.8 2.5 3 <0.5 0.5 0.55 0.35 0.03 0.03
AP-FeCr5W3MoV5Si2 base 1.7 5.5 3 0.5 5 - 2 0.8 0.4 0.03 0.03
AP-FeCr6WMoV8Si base 2.1 6 1 0.5 8 - 1 1 0.4 0.03 0.03
AP-FeCr3WMoV5Si base 1.3 3 1.5 1.5 5 - 0.8 0.5 0.4 0.03 0.03
AP-FeCr12MoV base 1.5 12 - 0.5 0.3 - - 0.4 0.4 0.03 0.03
AP-FeCr12MoV3Ti base 2.2 12 - 0.5 3 Ti 0.08 - 0.6 0.4 0.03 0.03
AP-FeCr18MoVCo2 base 1 18 <0.3 1.2 0.15 1.5 <1 1 0.45 0.03 0.05
AP-FeCr8W2V2Co base 0.9 4.5 2.5 - 2 - 1.4 1 n/a n/a n/a

AP – Atomized Powder

High Steel Powders:

AP-FeW6Mo5, AP-FeMo6V1, AP-FeMo6V1Co8, AP-FeMo6V3Co8, AP-FeMo2V3Si.
AP-FeW6Mo5 - shot blasting, microhardness is ≥400 HV 0.05 /5 (acc. to specification); 750-1000 HV (factual).

Die Steel Powders:

AP-FeCr5W3MoV5Si2, AP-FeCr6WMoV8Si, AP-FeCr3WMoV5Si, AP-FeCr12MoV, AP-FeCr12MoV3Ti
AP-FeCr18MoVCo2, AP-FeCr8W2V2Co

The size of the particles (the main fraction) µm:

Powders, excluding AP-FeW6Mo5-shot blasting : <40, <63 (20-63), 40-100, 63-200, 80 -160, 100-280, <315, 160-400, <800, etc.
Powder for shot blasting treatment is AP-FeW6Mo5-shot blasting: 40-250, 80-200, 100-315, 140-200, 160-315, 160-400, 315-630