NM450 and Hardox 450 are both wear-resistant steel plates that offer excellent abrasion resistance and toughness. While they have similar properties, there are some differences to consider:
Manufacturer: NM450 is a Chinese standard wear-resistant steel plate produced by multiple manufacturers in China. Hardox 450, on the other hand, is a brand of wear-resistant steel manufactured by SSAB, a Swedish steel company known for its high-quality specialty steels.
Chemical Composition: The chemical composition of NM450 may vary among different manufacturers, as long as it meets the required mechanical properties. Hardox 450, however, has a consistent chemical composition specified by SSAB, ensuring uniform performance.
Hardness: Both NM450 and Hardox 450 have a hardness level of around 450 HBW (Brinell Hardness), indicating their excellent resistance to abrasive wear. The actual hardness may vary slightly between different production batches or manufacturers.
Tensile Strength: The tensile strength of NM450 typically ranges from 1250 MPa to 1450 MPa. For Hardox 450, the minimum specified tensile strength is 1300 MPa.
Impact Toughness: Hardox 450 is known for its superior impact toughness, which allows it to absorb energy without fracturing under impact loads. NM450 may exhibit good impact toughness as well, but the exact values may vary depending on the manufacturer and specific heat treatment applied.
Availability: Hardox 450 is a globally recognized brand, readily available from authorized distributors worldwide. NM450, being a Chinese standard, may be more readily accessible in China or through specific suppliers.
Both NM450 and Hardox 450 offer excellent wear resistance and are suitable for various demanding applications in industries such as mining, construction, agriculture, and recycling. When choosing between the two, considerations such as availability, desired manufacturer reputation, and specific project requirements should be taken into account. Consulting with steel specialists or suppliers can help ensure the selection of the most suitable option for your application.