Corrosion-resistant steels and alloys

Powder AP-FeCr13

Application

The powders are used to apply corrosion- and wear-resistant coatings to components of machines and equipment using plasma and laser deposition, gas-dynamic and plasma spraying, as well as to prepare permeable materials (filters) and corrosion-resistant structural components (compacted powders that are reduced and sprayed with water). Chromium powder is also used for the difusive surface chromium coating or chrome aluminizing (mixed with aluminum powder) of machine parts.

Materials for these coatings are selected in order to ensure protection from corrosion and to achieve special qualities in the surface of machine and equipment components, and is based on the method used to deposit the hardsurfacing coatings.

Powder brands and characteristics

Name, brand, base grains	Nominal composition %
Name, brand, base grains	Fе	Сr	Ni	Si	Мо	Al	Other
Nickel powder AP-Ni99,7 (Nitrogen atomization) AP-Ni99,7 (Water atomization) - 40, 20-63, 40-100, 90-160 microns	≤0,25	-	base	-	-	-	С, S ≤0,05 Σ Fe, Co, Si, Cu, Mg, Zn, Mn, Sn, Pb, Sb, Bi ≤0,3.
Chromium powders RP-Cr grade S -150 microns RP-Cr grade M -100 microns, reduced	≤0,2	base	≤0,1	-	-	-	С ≤0,07, Si, Ca ≤0,01, N ≤0,009, O ≤0,3
Ni Al5 powder AP-NiAl5 alloy gas-sprayed -40, 11-53, 40-100, 40-125, 45-106 microns	≤1,0	-	base	-	-	5	С ≤0,1, Si, Fe, Mn ≤1
Stainless steel powder AP-FeCr18Ni9 gas-sprayed -40, 20-63, 40-100, 90-160 microns	base	18	9	-	-	-	С ≤0,2
Stainless steel powder RP-FeCr18Ni9Ti reduced -56* packed density 2.2-3.0 г/см³ -160* packed density 2.0-2.6 г/см³ -280* packed density 1.7-2.6 г/см³	base	18	9	-	-	-	С ≤0,08 Ti 0,8 О ≤0,35 S ≤0,02 Са ≤0,15
Stainless steel powder RP-FeCr18Ni15 reduced -56 packed density 1.9-2.5 г/см³ -160 packed density 1.8-2.5 (3,0) г/см³ -280 packed density 1.7-2.5 г/см³	base	18	15	-	-	-	С ≤0,08 О ≤0,30 S ≤0,015 Са ≤0,15
Stainless steel powder RP-FeCr17Ni2 reduced -56 packed density 2.2-3.0 g/cm³ -160 packed density 2.0-2.6 g/cm³ -280 packed density 1.7-2.6 g/cm³	base	17	2	-	-	-	О ≤0,35 S ≤0,02 Са ≤0,20
Stainless steel powder RP-FeCr23Ni18 reduced -56 packed density 2.2-3.0 g/cm³ -160 packed density 2.0-2.6 g/cm³ -280 packed density 1.7-2.6 g/cm³	base	23	18	-	-	-	С ≤0,08 О ≤0,30 S ≤0,02 Са ≤0,15
Stainless steel powder RP-FeCr13Mo2 reduced -160 packed density 2.1-2.45 g/cm³ -280 packed density 2.0-2.6 g/cm³	base	13	-	-	2	-	С ≤0,08 О ≤0,50 S ≤0,02 Са ≤0,20
Nichrome powder Ni80Cr20 AP-Cr20Ni80 (Nitrogen atomization) AP-Cr20Ni80 (Water atomization) -40, 20-63, 40-100, 80-160 microns	≤1,0	20,5	base	-	-	-	С, Mn ≤0,1 Si ≤ 0,5, О ≤0,05
Nichrome powder Ni80Cr20 RP-Cr20Ni80 reduced -160 packed density 2,0-2,6 g/cm³ -280 packed density 1,7-2,6 g/cm³	-	20	base	-	-	-	С ≤0,06 О ≤0,30 S ≤0,01 Са ≤0,20
Nichrome powder Ni60Cr40 RP-Cr40Ni60 reduced	-	40	base	-	-	-	С ≤0,06 S ≤0,02 Са ≤0,20
Powder of FeCr30 alloy RP-FeCr30 reduced -56 packed density 2,2-3,0 g/cm³ -160 packed density 2,0-2,6 g/cm³ -280 packed density 1,7-2,6 g/cm³	base	30	≤0,30				С ≤0,30 О ≤0,30 S ≤0,01 Са ≤0,20
Stainless steel powder AP-FeCr17Ni12Mo3 gas-sprayed 11-53, 45-106 microns	base	17	12	-	2,5	<0,6	Mn 0,8 С ≤0,1
Stainless steel powder AP-FeCr19Ni9Si5Mo4NV gas-sprayed 80-200 microns	base	19	9	-	-	-	N, Si, Мn, V, Si, Мn, Nb, С ≤ 0,08
Stainless steel powder AP-FeCr19Ni8Mo5Si4Mn4Nb gas-sprayed 80-200 microns	base	19	8	-	5	-	N, Si, Мn, V, Si, Мn, Nb, С ≤0,08
Stainless steel powder AP-FeCr19Ni11Mo2 gas-sprayed -40, 40-100, 80-400, 100-280 microns	base	19	11	-	2,5	-	С ≤0,08 О ≤0,05 Мn1,5
Stainless steel powder AP-FeCr20Ni2 gas-sprayed -40, 20-63, 40-100, 80-200 microns	base	13	2,2	-	-	-	Мn 0,8 С 0,2 Si 0,8 С 0,3
Stainless steel powder AP-FeCr13 gas-sprayed -40, 20-63, 40-100, 80-200 microns	base	13	-	-	-	-	Мn 0,8 С 0,2 Si 0,8 С 0,3
Stainless steel powder AP-FeCr18Ni9MoCuSi water-sprayed 630-2000, 630-2500 miccrons	base	18	9,5	0,8	0,9	-	Cu 0,9 С ≤0,12 О ≤0,45

AP – Atomized Powder; RP – Reduced Powder

Notes

Gas-sprayed powders – obtained by spraying molten metal with gas (spherical particles)

Water-sprayed powders - obtained by spraying molten metal with high-pressure water (irregular particle shapes)

Reduced powders – obtained by reducing metal oxides with calcium hydride (irregular particle shapes)

* - 56, -160, -280 here and below – designation of powder coarseness (base grain particle size), microns.

Powders developed for special application:

AP-FeCr19Ni9Si5Mo4NV, AP-FeCr19Ni8Mo5Si4Mn4Nb – for wear-resistant coatings for use in aggresive environments at high temperatures.

AP-FeCr19Ni11Mo2 – for anti-friction, corrosion-resistant coatings.

AP-FeCr18Ni9MoCuSi – for filtration of molten polyester resins.