"Engineered Surfaces for Exceptional Performance"
"Engineered Surfaces for Exceptional Performance"

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RocDur Series

RocDur series of thermal spray Flexicord deliver high-quality, cost effective coatings for flame spray application, either as sprayed or as fused. Made of a nickel self-fluxing alloy, RocDur thermal spray Flexicord are available in a range of wear-resistant compositions with matrix hardness from 19 HRC to 62 HRC. Whichever formula meets your specific needs for corrosion resistance, wear resistance or, RocDur thermal spray Flexicord offer excellent coating efficiency, enabling users to save time & money. 

RocDur 44 Thermal Spray Flexicord

A nickel/tungsten carbide based product from our line of thermal spray Flexicord products.

Features & Benefits

  • Self-fluxing nickel alloy.
  • Produces coating quality close to that of plasma spray/HVOF.
  • Very smooth coating with moderate hardness.
  • Good resistance to friction wear.
  • Easy to polish after spraying.

Physical Properties

Composition Coating Hardness Coating Density Coating Porosity Pore Diameter Coating Roughness CTE Melting Temp.
NiCrBSiFeC Matrix 38HRC +/- 2
Carbides 370 Hv300

8.1 g/cm3 (0.29 lb/in3)

3 - 5% as sprayed 5 to 15 µm 5 µm Ra 14.1 x 10-6/K at 700°C (1292°F) 1060°C (1940°F)

RocDur 6728 Thermal Spray Flexicord

A nickel/tungsten carbide based product from our line of thermal spray Flexicord products.

Features & Benefits

  • Composite coating made of a nickel self-fluxing alloy with tungsten carbide particles.
  • Excellent resistance to abrasive & erosive wear.
  • Good corrosion resistance.
  • Ideal for non-slip surfaces such as rollers & capstans.

Physical Properties

Composition Coating Hardness Coating Density Coating Porosity Pore Diameter Coating Roughness Melting Temp.
WC – 28%
NiCrBSi – 72%
Matrix 60HRC
Carbides 1300Hv300

10.1 g/cm3 (0.36 lb/in3)

<1% as fused <1µm as fused –212.5 µm Ra as sprayed
2 – 4 µm as fused
1060°C (1940°F)

RocDur 6740 Thermal Spray Flexicord

A nickel/tungsten carbide based product from our line of thermal spray Flexicord products.

Features & Benefits

  • Composite coating made of a nickel self-fluxing alloy with tungsten carbide particles.
  • Excellent resistance to abrasive & erosive wear.
  • Good corrosion resistance.
  • Ideal for non-slip surfaces such as rollers & capstans.

Physical Properties

Composition Coating Hardness Coating Density Coating Porosity Pore Diameter Coating Roughness Melting Temp.
WC – 40%
NiCrBSi – 60%
Matrix 60HRC
Carbides 1300Hv300

10.1 g/cm3 (0.36 lb/in3)

<1% as fused <1µm as fused –212.5 µm Ra as sprayed
2 – 4 µm as fused
1060°C (1940°F)

RocDur 6750 Thermal Spray Flexicord

A nickel/tungsten carbide based product from our line of thermal spray Flexicord products.

Features & Benefits

  • Composite coating made of a nickel self-fluxing alloy with tungsten carbide particles.
  • Excellent resistance to abrasion & erosion.
  • Good corrosion resistance.
  • Roughness of 6750 is greater than that of RocDur 6740.
  • Ideal for non-slip surfaces such as rollers & capstans (as sprayed).

Physical Properties

Composition Coating Hardness ASTM G65 Volume Loss Coating Density Coating Porosity Pore Diameter Coating Roughness Melting Temp.
WC – 50%
NiCrBSi – 50%
Nickel 60 HRC
Carbides 2000 Hv300

3.52 mm

12 g/cm3 (0.43 lb/in3)

<1% as fused <1µm as fused 10 – 12 µm Ra as sprayed
0.25 – 0.4 µm as fused
1060°C (1940°F)

RocDur NS 60 Thermal Spray Flexicord

A nickel/tungsten carbide based product from our line of thermal spray Flexicord products.

Features & Benefits

  • Exceptional hardness provides excellent wear resistance for a long-lasting, skid-resistant coating.
  • Unlike non-skid paints, NS 60 is not prone to flaking.
  • NS 60 is fire resistant, making it ideal for marine & offshore applications.

Physical Properties

Composition Coating Hardness ASTM G65 Volume Loss Coating Density Roughness (as sprayed)
Al2O3 ~33%
Ni base ~67%
Matrix 60 HRC

6.7 mm3

5.8 g/cm3 (0.21 lb/in3)

19 µm Ra
143 µm Rmax
73 µm RP
147 µm Rt