JFE-EH600|NM600

NM600 Steel Plate : Uses, Composition, Properties

What is steel grade NM600?

What is NM600 steel?

NM600 is a high-strength wear-resistant steel plate. The “NM” in its name represents the initials of the Chinese pinyin for “耐磨” (NaiMo, meaning wear resistance), while “600” indicates that the average Brinell hardness value of this steel plate is approximately 600HBW.

NM600 steel plate complies with the GB/T 24186-2009 standard. It possesses excellent mechanical properties and wear resistance, and is widely used in occasions or parts requiring wear resistance. This application helps prolong the service life of equipment and reduce downtime and financial investment caused by maintenance.

NM600 now is one of highest hardness steel plates in China and in the world,It is widely used in extremely harsh wear conditions, such as crusher blades, lining plates of mining machinery, excavator accessories, etc

what is NM600 steel equivalent to?

NM600 steel is equivalent to other wear-resistant steels such as Hardox 600 produced by SSAB of Sweden, EH600 from Japan, and AR600 from the United States, all of which have similar mechanical properties and are used in similar applications.

What is the hardness of NM600?

The hardness of NM600 steel typically ranges from 570 to 630 HBW.

what are the properties of NM600 material?

High Wear Resistance: NM600 steel offers superior wear resistance, making it ideal for applications that involve extrem heavy abrasion.
High Strength: It has a high tensile strength, contributing to its durability and ability to withstand mechanical stress.
Good Toughness: Despite its hardness, NM600 maintains good toughness, allowing it to absorb impacts without cracking.
Good Weldability and Machinability: NM600 can be welded and machined using appropriate techniques, although preheating and post-weld heat treatment may be required to prevent cracking.

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What is nm600 steel used for?

Forklift

Backhoe

Tipper

Trailer

Armor Plates

Applications of NM600 Steel Plate

NM600 steel plate has a broad range of applications, primarily in the fields of mining machinery, crashing machinery, and port machinery. Its three most common application areas are as follows:

1.Quarry and Construction Machinery:

Examples: Gravel and stone conveying equipment (such as routes, chutes, hoppers), crushing equipment, shovels, excavators, forklifts, trailers, bulldozers, dump trucks, dredgers, crushers, grinders, screens, hoppers, mixers, and concrete aggregate molds.

2.Mining Machinery:

Examples: Fans, dischargers, spiral chutes, crushers, grinders, screens, and conveyors.

3.Cement and Refractory Material Plants:

Examples: Crushers, chutes, and cyclone separators.

In these applications, NM500 wear-resistant plates serve as wear-resistant components. They can withstand harsh working environments and heavy loads, ensuring the long-term stable operation of the equipment. Due to its high cost-performance ratio, NM500 is often used as an alternative to Hardox 450 wear plates.

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AISI AR600 Steel,JFE-EH600 (CN NM600#) Download

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Properties of NM600 Steel Plate

Property	Value
Density	7.85 g/cm³
Tensile Strength	2070 MPa
Yield Strength	1630 MPa
Elongation	8% δ
Temperature Resistance	-20°C
Longitudinal Impact Energy Absorption	≥18 (KV2) J
Hardness	570-640 HB
Section centre Brinell hardness	470-530 HB

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How Is NM600 Steel Made?

The smelting process is basically the same for the NM600/EH600/AR600and the normal mild steel, but more requirement for the purtity of steel for NM600 steel. During the smelting process, the carbon element is added to the expected value and making the carbon element distriuted evenly by technical method.

What Are The Advantages And Disadvantages Of Using NM600 Gauge Steel?

What Are the Disadvantages of Using NM600 Steel Plate?

High Production Cost and Complexity:
High production costs and complex manufacturing processes result in prices 3–5 times higher than ordinary steel plates.

Strict Welding Requirements:
Demanding welding requirements necessitate precise temperature control (preheating and interpass temperatures). Improper handling can lead to cold cracks.

Thickness Limitations and Brittleness:
Limited thickness specifications and potential brittleness in extreme applications require stringent quality control during fabrication.

What Are the Advantages of Using NM600 Steel Plate?

Exceptional Hardness and Wear Resistance：‌

Surface hardness reaches 600HBW23, 6-10 times higher than standard Q235 steel2, providing superior resistance to abrasive wear in harsh industrial environments18.

High Impact Resistance：‌

Maintains stable mechanical performance even under extreme impact loads and low temperatures (-40°C), ideal for mining and heavy machinery applications.

Balanced Machinability：‌

Despite its ultra-high hardness, it retains workability for cutting, welding, and forming with appropriate heat treatment25. Uniform surface coating reduces friction and extends service life15.

Versatile Applications：‌

Widely used in mining, construction, metallurgy, and power industries for components like excavator buckets, crusher liners, conveyor systems14, and wear-resistant structural parts6.

Thermal Stability：‌

Maintains performance at temperatures up to 600°C (with alloy modifications up to 800°C)4, suitable for high-temperature equipment like coal mills68.

Customizable Heat Treatment：‌

Available in multiple delivery states (quenched, tempered, TMCP+tempered) to optimize hardness-toughness balance35, ensuring adaptability to diverse engineering needs58.

Surface Quality Assurance：‌

Strict quality control eliminates cracks, bubbles, and inclusions35, ensuring reliability in critical applications36.

Cost-Effectiveness：‌

Extends equipment lifespan significantly despite higher initial costs, reducing downtime and maintenance expenses28.