Hardide coating has a volume porosity of <0.04%, which is effectively pore-free, with no through porosity from 1μm of coating thickness.
It contains no binder-phase such as cobalt or nickel. This allows the coating to protect substrates against corrosive and aggressive media including HCl, H2SO4, HF, H2S and molten metals. The coating has proven resistant to sulphide stress cracking and stress corrosion in H2S environments in independent NACE TM0177 tests.
Sulphide stress corrosion cracking is an issue for downhole tools as the natural gas and crude oil materials being processed often contain considerable amounts of hydrogen sulphide. Equipment that comes in contact with H2S environments can be rated for sour service with adherence to NACE MR0175/ISO 15156 for oil and gas production environments or NACE MR0103/ISO 17945 for oil and gas refining environments. Hardide coating performs well in these environments and protects the substrates of downhole tooling.
Sulphide Stress Cracking Test NACE TM0177-2005 / ASTM G39
|Hydrochloric Acid||Resistant to attack|
|Sulphuric Acid||Resistant to attack|
|Nitric Acid||Resistant to attack|
|Aqua Regia - cold||Resistant to attack|
|Oxygen to 400 °C||Resistant to attack|
|Water to 600 °C||Resistant to attack|
|Hydrogen||Resistant to attack|
|Ammonia below 700 °C||Resistant to attack|
|CO to 800 °C||Resistant to attack|
|Chlorine Gas to 250 °C||Resistant to attack|
|Molten glass to 1700 °C||Resistant to attack|
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