Knife Gate Valves Browse All 
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Chrome white iron is a high chromium cast iron alloy known for its exceptional wear resistance and hardness. It is an excellent choice for valves handling abrasive slurries, but it may not be suitable for high-impact or highly corrosive environments.
Properties
- Superior Wear & Abrasion Resistance – Extremely hard (Rockwell hardness up to HRC 60-65), ideal for slurry, mining, and dredging applications.
- High Chromium Content (Typically 12-30%) – Forms chromium carbides, which enhance durability in erosive environments.
- Mild Corrosion Resistance – Performs well in mildly acidic or alkaline conditions but is not as corrosion-resistant as stainless steel.
- High Strength & Impact Resistance – Can withstand high-pressure and abrasive flow conditions.
- Temperature Tolerance – Suitable for applications up to 600°C (1112°F) but may become brittle at extreme temperatures.
Chrome White Iron vs. Ni-Hard
• Chrome white iron contains hard chromium-rich carbides, offering superior wear resistance
• Ni-Hard has less hard carbides and a matrix that offers better toughness
• Chrome white iron is extremely wear-resistant but brittle
• Ni-Hard offers a balance of wear and impact resistance, making it less brittle than high-chrome irons
Limitations
- Brittle Compared to Ductile Metals – Not ideal for high-impact mechanical stress or severe thermal cycling.
- Limited Machinability – Requires grinding or special tooling for modifications.
- Lower Corrosion Resistance Than Stainless Steel – Can corrode in highly acidic or chloride-rich environments.
Common Applications
Slurry & Mining Valves – Used in knife gate, ball, and check valves for handling abrasive slurries and mineral processing.
Dredging & Sand Processing Valves – Resists wear in sand, gravel, and slurry transport systems.
Pulp & Paper Valves – Handles fibrous and abrasive materials in pulp processing.
Oil & Gas Valves – Suitable for handling highly abrasive fluids and drilling muds.