Chrome Carbide Powders – 75Cr3C2 25NiCr – LA-CRN1-19 (-140 +10u) Cr3C2-NiCr 75/25, blend

Chrome Carbide Powders – 75Cr3C2 25NiCr – LA-6875 (-325 +15u) Cr3C2-NiCr 75/25, blend

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SKU: LA-6875 Categories: ,

Appropriate for applications 1000- 1500°F, coatings of chrome carbide nickel chrome are recommended for resistance wear by abrasion, hard surfaces, fretting, and particle erosion.

Chrome carbide coatings are used for wear resistance in combination with a higher temperature capability than is possible with tungsten carbide powders. Although generally less wear resistant than tungsten carbides, chrome carbide is excellent at higher temperatures and under corrosion and oxidation conditions. These properties are enhanced when the metal alloy matrix is made from the highly corrosion resistant Nichrome alloy.

  • Material Specificaiton
  • Product Application
  • Useful Documents
  • Equivalents
  • Method
  • REVIEW
Material Specificaiton for LA-6875

Chemical Compositon Requirements (By weight percent)

Element Minimum Maximum Target
Aluminum - - -
Boron - - -
Carbon 10.20% - 10.20%
Chromium 72.40% 74.00% 73.20%
Cobalt - - -
Free Carbon - - -
Iron - 0.80% 0.40%
Manganese - 0.50% 0.25%
Molybdenum - - -
Nickel 15.00% 16.00% 15.50%
Oxygen - - -
Silicon - 0.40% 0.20%
Sulfur - - -
Tungsten - - -
Vanadium - - -

Rotap Sizing Requirements (Weight Percent Per ASTM B214)

U.S. Mesh Passing Sieve X Retained - - Min. Max.
- - 140 Mesh - 0.80%
140 Mesh X 170 Mesh - 12.00%
170 Mesh X 200 Mesh - -
200 Mesh X 230 Mesh - -
230 Mesh X 270 Mesh - -
270 Mesh X 325 Mesh - -
325 Mesh X D 19.00% -

Sub-Sieve Sizing Requirements (Volume Percent Per ASTM B822)

Micron Channel Min Max
-44 μ 9.00% 15.00%
-22 μ - 1.00%
-5.5 μ - -
- - -
- - -
- - -
- - -

Physical Properties Requirements

Testing Procedure Minimum Maximum
Hall Flow (per ASTM B213) - -
Apparent Density (per ASTM B212) - -
Mean Value (per ASTM B222) - -
D10 (per ASTM B222) - -
D50 (per ASTM B222) - -
D90 (per ASTM B222) - -

These products are ideal for:

  • Turbine air seal rings
  • Turbine exhaust valve seats
  • Turbine struts

Equivalents:

  • Metco 81VF-NS, Amdry 305, CRC-106

Method:

  • Air Plasma Spray, HVOF
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Chrome Carbide Powders – 75Cr3C2 25NiCr – LA-CRN1-19 (-140 +10u) Cr3C2-NiCr 75/25, blend