NM400（GR130/XAR400/HARDOX400）

Wear resistant steel NM400 is a high-strength wear-resistant steel plate, with 400 representing the average Brinell hardness of this steel plate.

1、 Basic attributes

Type: High strength wear-resistant steel plate

Hardness: Usually between 360HBW and 440HBW, there are also claims that its surface hardness reaches 360-450HB

Flatness: 5mm/M

Delivery status: quenched and tempered (i.e. quenched and tempered)

2、 Chemical composition

The chemical composition of NM400 wear-resistant steel plate mainly includes elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, etc. The carbon content is between 0.30% and 0.40%, the silicon content is between 0.20% and 0.40%, the manganese content is between 1.00% and 1.50%, the phosphorus and sulfur content are relatively low (not exceeding 0.015% and 0.010% respectively), and the chromium content is between 0.20% and 0.40%. In addition, it may also contain small amounts of elements such as nickel and copper.

3、 Mechanical performance

Tensile strength: above 1200MPa

Yield strength: above 1000MPa, there are also claims that its yield strength is over 900 MPa

Elongation rate: above 10%

Impact toughness: ≥ 40J at -20 ° C

4、 Application scope

NM400 wear-resistant steel plate is widely used in various occasions or components that require wear resistance due to its excellent wear resistance and high strength, such as mining machinery, coal mining machinery, environmental protection machinery, engineering machinery and other fields. Specific applications include crusher liners, blades, conveyor liners, baffles, excavator, loader, bulldozer bucket plates, blade plates, side blade plates, blades, as well as wear-resistant structural components such as cement plant equipment and screw conveyors.

5、 Processing performance

The processing performance of NM400 steel plate is good, and it can be processed by cutting, welding, and bending. However, during the processing, it is necessary to pay attention to controlling the heating temperature and cooling rate to avoid affecting its performance. For example, during cutting, measures such as preheating, low-speed cutting, and slow cooling after cutting can be taken to prevent the occurrence of cutting cracks.

6、 Other information

Common specifications: NM400 wear-resistant steel plate has multiple specifications to choose from, with a wide range of thicknesses that can be customized according to specific needs.

Test methods: including tensile test, impact test, hardness test, etc., used to test whether the various performance indicators of the steel plate meet the requirements.

In summary, NM400 wear-resistant steel plate has been widely used in multiple fields due to its excellent wear resistance and high strength, and is one of the important materials for manufacturing wear-resistant components.

Regarding standard specifications:

Chinese standard steel grade: NM400

American standard steel grade: GR130

German standard steel grade: 400V (DILLIDUR)

French standard steel grade: XAR400

Swedish steel grade: HARDOX400 (SSAB)

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