Ni-Hard Cast Iron Wear Plates

Ni-Hard Cast Iron Wear Plates

Premium-grade Ni-hard Cast Iron Plates Offering Superior Abrasion Resistance And Extended Service Life In Extreme Wear Environments.

Ni-hard cast iron wear plates are engineered for high-abrasion, moderate-impact conditions, providing excellent hardness, longevity, and cost-efficiency.

Ni-Hard Wear Plate Cast Iron Wear Plate Abrasion Resistant Plate High Chrome Iron +1 More
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Ni-Hard Cast Iron Wear Plates

Premium-grade Ni-hard Cast Iron Plates Offering Superior Abrasion Resistance And Extended Service Life In Extreme Wear Environments.

Ni-hard cast iron wear plates are engineered for high-abrasion, moderate-impact conditions, providing excellent hardness, longevity, and cost-efficiency.

Ni-Hard Wear Plate Cast Iron Wear Plate Abrasion Resistant Plate High Chrome Iron +1 More
Download
Ni-Hard Wear Plate
Cast Iron Wear Plate

Ni-Hard Cast Iron Wear Plates are manufactured from high chromium, nickel-bearing cast iron alloys conforming to ASTM A532 Class I standards. These plates are renowned for their exceptional hardness (550–650 HB), resistance to sliding abrasion, and good impact strength, making them ideal for applications exposed to heavy wear and material erosion.

Ni-Hard plates feature a microstructure of carbides in martensitic or pearlitic matrices, offering consistent performance in both dry and wet abrasive conditions. They are available in custom sizes and shapes, with or without bolt holes, backing plates, or countersinks, depending on your installation needs.

Ni-Hard cast iron is a cost-effective, time-tested solution for combating wear in high-abrasion industrial processes. Compared to rubber, mild steel, or hardened steel, Ni-Hard offers significantly longer wear life in heavy-duty environments, such as cement grinding, ore transfer, or fly ash handling. Its robust metallurgical structure makes it a dependable material for fixed or high-load wear zones requiring consistent performance.

Specifications:

Ni-Hard cast iron wear plates are high-performance white cast iron products enhanced with nickel and chromium.

  • Hardness: HRC 52–58
  • Meets international standard: AS 2027-2002
  • Metallographic Structure: Eutectic Carbide + Martensite + Retained Austenite
  • Density: 7.3–7.5 g/mm²
  • Strength of Extension: 25–40 kg/mm²

Key Features

Engineered for high-abrasion environments, Ni-Hard wearback pipes provide robust performance and cost-effective durability in conveying abrasive materials.

High Wear Resistance

Ni-Hard cast irons, with nickel and chromium, are highly abrasion-resistant, especially in sliding contact applications.

Replaceable Wearback

The inner wearback plate is replaceable, reducing downtime and allowing targeted maintenance of high-wear zones.

Durable Construction

Heavy-duty Ni-Hard castings maximize pipe longevity, even under continuous abrasive loading.

Various Configurations

Available in 45° and 90° bends, with or without wearbacks, suitable for custom flow system layouts.

Flanged Ends

Standard flanged ends allow quick and secure installation into existing pipelines and equipment.

Custom Designs

Custom fabrication supports specific dimensions, angles, and wearback options to match system requirements.

Material Compatibility

Ideal for conveying abrasive media such as cement, slag, coal, granite dust, quarry fines, and sinter dust.

Cost-Effective Maintenance

Lower lifecycle costs due to reduced part replacement frequency and minimal downtime from targeted wearback renewal.

Nickel alloys: Ni-hard

Ni-hard is a type of cast iron that is made from nickel and chromium alloys. It is used in a variety of applications, such as in the construction of pipes, cables, and other structures. Ni-hard is also used in the manufacturing of machinery, such as drills and lathes.

One such material is Ni-Hard. Ni-Hard is a generic name for a family of white cast irons, alloyed with nickel and chromium, suitable for low impact, sliding abrasion for both wet and dry applications.

There are three types of Ni-Hard: Type 1, Type 2 and Type 4. Each has slight variations in composition between ASTM and EN specifications, shown in the table below Nickel is vital in optimising hardness and thus wear resistance. Nickel content increases with section size or cooling time of the casting to inhibit pearlitic transformation. For castings of 38–50 mm (1½–2”) thick, 3.4% to 4.2% nickel is sufficient to suppress pearlite formation which forms as the casting mold cools. Heavier sections may require nickel levels up to 5.5% to avoid the formation of pearlite. It is important to limit nickel content to the level needed to control pearlite as excess nickel increases the amount of retained austenite and lowers hardness.

* Chemical composition ranges in weight %
Pipe Grade Designation C Ni Cr Si Mn Mo S P
ASTM A532
Ni-Hard 1 Class I, Type A 2.8–3.6 3.3–5.0 1.4–4.0 0.8 2.0 1.0 0.15 0.3
Ni-Hard 2 Class I, Type B 2.4–3.0 3.3–5.0 1.4–4.0 0.8 2.0 1.0 0.15 0.3
Ni-Hard 4 Class I, Type D 2.5–3.6 4.5–7.0 7.0–11.0 2.0 2.0 1.5 0.15 0.10
EN 12513
Ni-Hard 1 EN-JN2039 3.0–3.5 3.0–5.5 1.5–3.0 0.8 0.8 – 0.10 0.10
Ni-Hard 2 EN-JN2029 2.5–3.0 3.0–5.5 1.5–3.0 0.8 0.8 – 0.10 0.10
Ni-Hard 4 EN-JN2049 2.5–3.5 4.5–6.5 8.0–10.0 1.5–2.5 0.3–0.8 – 0.08 0.08

Benefits

Engineered to thrive in highly abrasive environments, Ni-Hard pipes offer unmatched longevity and performance across material handling industries.

Exceptional Wear Resistance

Ni-Hard alloys resist severe abrasion from sand, cement, quarry dust, and other harsh media—far outperforming standard steel pipes.

Extended Lifespan

With significantly longer service life in abrasive environments, Ni-Hard pipes reduce replacement frequency and system downtime.

Reduced Maintenance

Their inherent durability minimizes maintenance needs and repair intervals, improving uptime and operational efficiency.

Cost-Effectiveness

Despite higher upfront costs, their longevity and low upkeep requirements yield substantial long-term cost savings.

Improved Flow Efficiency

Smooth internal surfaces reduce friction and turbulence, enhancing transport efficiency and material throughput.

Wide Industry Application

Ideal for mining, cement, power generation, and other sectors involving abrasive media handling.

Replaceable Wearbacks

Allows targeted component replacement instead of full pipe replacement—minimizing downtime and optimizing cost control.

Paint & Packing of Ni-hard Wearback Pipes

Ni-hard wearback pipes are carefully coated and packaged to ensure corrosion protection, aesthetic finish, and secure transit handling.

The outer surface is painted with anti-rust or customized coatings, while inner surfaces are sealed or fixed. Packaging methods include wooden boxing, steel framing, and internal blocking to protect pipes from vibration, moisture, and mechanical damage during transportation.

Ni-hard pipe packing
Packing

Steel frame packaging to secure the pipe body.

Ni-hard pipe paint
Paint

Surface painted to prevent oxidation and corrosion.

Ni-hard pipe paint
Paint Finish

Smooth painted finish before shipping.

Internal fixed steel pipe
Internal Fixed

Internal block to prevent pipe movement.

Ni-hard pipe paint
Surface Coating

Uniform coating for warehouse or export.

Ni-hard pipe protection
Inner Protection

Plastic plugs to block moisture entry.

Wooden box packing
Packing in Wooden Box

Export-grade wooden box with anti-shock padding.

The Differences Between Ni-Hard and Chrome White Iron

Ni-Hard and Chrome White Iron are both commonly used materials in applications requiring high wear resistance, but they have several key differences:

  • Ni-Hard is a cast iron alloyed with nickel and chromium, while Chrome White Iron is alloyed with chromium and carbon.
  • Ni-Hard provides superior abrasion resistance due to higher nickel content.
  • Chrome White Iron offers better corrosion resistance owing to its high chromium content.
  • Ni-Hard is ideal for mining and cement industries focused on abrasion resistance.
  • Chrome White Iron serves dual needs—abrasion and corrosion resistance, such as in pumps and grinding parts.
  • Ni-Hard has an austenitic-carbide structure; Chrome White Iron is martensitic-carbide based.
  • Ni-Hard is costlier because of its nickel content.
Ni-Hard High Chrome White Iron
Specification: ASTM A532 Class I Specification: ASTM A532 Class II and III
Microstructure: Cementitic iron that solidifies as austenite with Fe₃C carbides Microstructure: Iron-rich martensitic matrix with M7C3 chromium carbides
Type A: most affordable and common, ideal for abrasion resistance only Class II alloys offer superior impact resistance compared to Ni-Hard A, B, D
Type B: replaces Type A for more toughness Class II/III: better corrosion and toughness than Ni-Hard B
Type D: highest toughness and corrosion resistance among Ni-Hard grades Class III: highest chromium content; best corrosion resistance among A532 alloys
Applications:
  • Brick molds
  • Concrete/asphalt mixing components
  • Crusher plates
  • Pump casings (for corrosive slurries)
 Applications:
  • Cement mill balls
  • Crusher liners, chute liners
  • Slurry pump parts
  • Mill liners and cyclone parts

Ni-Hard (ASTM A532 Class I Type A) and High Chrome White Iron (ASTM A532 Class II & III) differ in microstructure, mechanical properties, and cost-effectiveness depending on application demands. This comparison helps in selecting the right material for specific wear and corrosion challenges.

Typical Applications

Ni-Hard wearback pipes are engineered for high-abrasion environments, offering long service life in industries like mining, power generation, and construction.

Abrasive Material Handling

Handles sand, cement, ores, and coal dust in mining, cement, and bulk material systems.

High-Temperature Resistance

Performs in extreme heat environments such as coal fly ash handling in thermal plants.

Dual Resistance

Nickel promotes austenitic microstructure—resistant to both abrasion and heat.

Industrial Versatility

Used in mining, construction, and power generation industries for reliable wear solutions.

Customizable Size & Weight

Available from 25 kg to 500 kg per piece to meet various system requirements.

Standardized Manufacturing

Produced per IS: 4771 – 1985 Type 1A to Type 3, ensuring quality and consistency.

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