The concept of NM400
NM400 is a high-strength wear resistant steel plate, where "NM" indicates the first letter of the "resistance" and "grind" characters for wear resistant purposes, while "400" represents the approximate range of its Brinell hardness value HB (although the hardness range of domestic NM400 is usually 360-420HB, but 400 is widely accepted as a generalized value). This steel plate is widely used in many industrial fields due to its excellent wear resistance and high strength characteristics.
NM400 features
High strength: The mechanical strength of NM400 steel is much higher than that of ordinary low-alloy steel, usually 3 to 5 times, which makes it perform well when subjected to high loads and impact loads.
Good wear resistance: By significantly improving the wear resistance of mechanically related components, NM400 steel can significantly extend the service life of equipment and reduce production costs.
Good toughness and weldability: NM400 steel plate not only has high strength, but also has good toughness and weldability, which is easy to process and manufacture.
Strong weather resistance: It has good adaptability to atmospheric temperature changes (-40 ~ 120°C), good frost resistance, and can work safely in wet or dry conditions for a long time without rust, corrosion, and scale.
Chemical composition of NM400
The chemical composition of NM400 steel plate mainly includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), molybdenum (Mo), titanium (Ti), boron (B) and other elements, the specific content is as follows:
Carbon (C) : ≤0.3%
Silicon (Si) : ≤0.7%
Manganese (Mn) : ≤1.6%
Phosphorus (P) : ≤0.025%
Sulfur (S) : ≤0.01%
Chromium (Cr) : ≤1.2%
Nickel (Ni) : ≤0.7%
Molybdenum (Mo) : ≤0.5%
Titanium (Ti) : ≤0.05%
Boron (B) : ≤0.006%
The reasonable combination of these chemical components makes the NM400 steel plate have excellent mechanical properties and wear resistance.
Application of NM400
NM400 wear-resistant steel plate is widely used in many fields due to its high strength and wear resistance:
Construction machinery: such as excavators, loaders, bulldozers and other equipment bucket plate, blade plate, side blade, blade and other wearing parts.
Mining machinery: Used for crusher lining plate, blade and other parts that withstand high impact and high wear.
Coal mining machinery: In coal mining, NM400 steel plate is used to manufacture various wear-resistant parts to improve the service life of equipment.
Environmental protection machinery: In environmental protection equipment, NM400 steel plates are used to manufacture wear-resistant structural parts.
Metallurgical machinery: In the metallurgical industry, NM400 steel plates are also used to manufacture various wear-resistant parts.
In addition, NM400 steel plate is also widely used in other need to withstand high load and wear occasions, such as cement plant equipment,
