Grade Selection

The correct manganese grade depends on the part size, impact level, abrasion level, section thickness, and how the part is failing in service. Standard manganese is not always the right answer, and higher alloy content does not automatically mean better wear life.

Eastwell Engineering can help review the application and supply a manganese casting grade suited to the operating conditions.

Variations

Mn13

Mn13 is a standard manganese steel grade used for general impact wear applications. It offers good toughness and work-hardening ability, making it suitable for many common manganese wear parts.

Mn13 is often selected where the part is exposed to repeated impact and needs to resist cracking while developing a hardened working surface during service.

Mn18

Mn18 is a higher manganese grade used where increased toughness and a more stable austenitic structure are required. The higher manganese content can improve the material’s ability to handle severe impact and gouging wear.

Mn18 is generally considered where the wear part is exposed to heavier impact, higher loading, or more demanding service conditions than standard manganese steel.

Chromium Addition

Chromium can be added to manganese steel where improved hardness and abrasion resistance are required. This can be useful where the casting is exposed to a combination of impact and sliding wear.

The amount of chromium needs to be selected carefully, as increasing hardness can affect toughness. For this reason, chromium manganese castings are selected based on the actual wear conditions of the part.

Molybdenum Addition

Molybdenum can be added to manganese steel to improve toughness, hardenability, and resistance to deformation. It is commonly considered for heavier-section castings where the casting thickness makes heat treatment more critical.

In thicker castings, molybdenum can help support better through-section properties and reduce the risk of toughness issues caused by slower cooling. It can also help improve resistance to gross deformation in heavy-duty applications.

MANGANESE STEEL

Eastwell Engineering can supply manganese steel castings for high-impact wear applications. Manganese steel is commonly used where toughness, impact resistance, and work-hardening performance are required.

Unlike standard hardened steel, manganese steel work-hardens in service. The casting remains tough underneath while the working surface becomes harder under repeated impact and pressure. This makes it suitable for demanding wear parts used in crushing, shredding, screening, recycling, mining, and heavy industrial applications.

We can supply manganese castings in different grade options depending on the application, wear conditions, section thickness, and required performance.

Quality Assurance

• Chemical Analysis

• Impact charpy testing

• Hardness testing

• Ultrasonic Testing

• Magnetic Particle Testing

• CMM report