Instrumental steels for coatings

Application

Instrumental steels powders are intended for making cutting and shaping instruments 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-b is for bead-blasting treatment, 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-b for bead-blasting : <40, <63 (20-63), 40-100, 63-200, 80 -160, 100-280, <315, 160-400, <800, etc.
Powder for bead-blasting treatment is AP-FeW6Mo5-b: 40-250, 80-200, 100-315, 140-200, 160-315, 160-400, 315-630