Chemical composition

Physical properties

Material properties

UNS J91149 is a high-manganese steel casting material known for its exceptional toughness and wear resistance, especially in abrasive environments. With a higher carbon content compared to Grade A, Grade B-4 offers improved hardness and wear resistance, making it suitable for applications requiring higher abrasion resistance.

Advantage

1. Enhanced hardness and wear resistance.
2. Excellent toughness and impact strength.
3. Good work hardening ability.
4. Suitable for higher abrasion applications.
5. Cost-effective alternative to high-chromium steels.

UNS J91149  application

ASTM A128 Grade B-4/UNS J91149 is commonly used in industries such as mining, construction, and recycling. It is ideal for manufacturing wear parts like crusher liners, shredder hammers, and wear plates, where extended service life under harsh operating conditions is required.