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ASTM A532

High Chromium White Cast Iron For Extreme Abrasion Resistance Applications

ASTM A532 is a standard specification covering abrasion-resistant high chromium white cast irons. These alloys are widely used in applications requiring superior wear resistance under severe conditions.

With chromium content ranging from 11% to 30%, ASTM A532 materials provide excellent hardness and durability, making them ideal for mining, slurry transport, and industrial wear components.

ASTM A532 White Cast Iron

The Ultimate Solution for High-Abrasion Environments


Engineered for Durability

ASTM A532 specification covers a range of **abrasion-resistant white cast irons** enriched with Chromium and Nickel. These alloys are specifically heat-treated to create a martensitic matrix with hard carbides ($M_7C_3$), providing unmatched hardness (up to 700 HB) for sliding and gouging wear resistance.

  • Class I: Ni-Hard types for moderate impact.
  • Class II: 15% - 20% Cr-Mo for balanced performance.
  • Class III: 25% High Chromium for corrosion & wear.

Technical Specifications & Applications

Slurry Pumps

Impellers and volutes designed for abrasive fluid handling.

Mining Liners

Grinding mill and chute liners with high-impact resistance.

Extreme Hardness

Typical hardness ranges from 500 to 700 Brinell (HB).

Key Features

Excellent Wear Resistance

High chromium content provides superior resistance against abrasion and erosion.

High Hardness

Hardness typically ranges from 450 to 650 HB depending on grade.

Corrosion Resistance

Improved resistance in mildly corrosive environments compared to standard cast iron.

Typical Chemical Composition

Grade Cr (%) C (%) Mo (%)
Class I 11-14 2.0-3.3 0-3.0
Class II 14-18 2.0-3.3 0-3.0
Class III 23-30 2.0-3.0 0-2.5

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