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NM600 Extreme Ultra-High Hardness Wear Steel

NM600 is a wear-resistant structural plate produced by quenching and tempering or TMCP routes. NM600 is designed to deliver long life in abrasive/impacting environments while remaining usable in welded fabrications and heavy assemblies. It is a premium product in the NM series (NM300, NM360, NM400 → NM600), intended where NM500 or NM550 no longer provide adequate service life.

Extreme Abrasion Resistance 12mm Nm600 Wear Plate Abrasive Resistant Steel Plate NM600 Thick Wear-Resistant Steel Plate NM600 wear plate NM600 Steel Plate NM600 Plate

Introduction
Parameters
Service

What is NM600 steel plate?

What is equivalent to NM600 steel?

NM600 occupies the same functional class as other global high-hardness abrasion steels. Common equivalents (performance class) seen in supplier literature:

Hardox® 600 (SSAB) — nominal 600 HBW; widely regarded as a premium, tightly controlled product family.

EH600 / EVERHARD-600 (JFE) — Japanese product in the 600 HBW class.

AR600 / AR600 class steels — a North American-style designation used by mills and distributors for similar hardness class.

Chinese NM600 — made to GB/T 24186 series; when properly produced it can match the key performance of the above brands for many wear cases.

NM600 steel plate Specification

Parameter	Typical commercial range
Thickness	3 mm – 80 mm (commonly 6–50 mm)
Width	600 mm – 2500+ mm (2000 mm common)
Length	1000 mm – 15000 mm (cut-to-length available)
Surface finish	Oiled, shot blasted, black painted, checkered
Edge and cutting	Flame/oxy, plasma, laser (depending on thickness)
Hardness test	One or more HBW readings per heat; sub-surface method per ISO/GB spec.
(These reflect mainstream mill offerings and GB/T 24186 guidance.)

Critical Applications

Mining equipment: Crusher liners, chute liners, conveyor components

Construction machinery: Excavator buckets, bulldozer blades, loader components

Industrial processing: Cement plant equipment, steel mill components

Material handling: Dump truck bodies, hoppers, wear plates

Abrasion Resistant Steel Plate Services

Machining
Testing
Cutting
Drilling
Punching
Forming
Grinding

Abrasion Resistant Steel Plate Packaging

Wooden boxes
Pallets
Plastic wrap
Custom

Specification Parameters

Basic Information

Chemical Composition
Element	Content (%)	Purpose
Carbon (C)	0.47-0.54	Hardness and strength
Silicon (Si)	0.10-0.70	Deoxidation and strength
Manganese (Mn)	1.00-1.60	Hardenability
Phosphorus (P)	≤ 0.025	Controlled impurity
Sulfur (S)	≤ 0.010	Controlled impurity
Chromium (Cr)	1.20-2.00	Hardenability and wear resistance
Nickel (Ni)	0.25-1.50	Toughness
Molybdenum (Mo)	0.25-1.00	Hardenability and strength
Boron (B)	0.0005-0.0060	Hardenability enhancement
Titanium (Ti)	≤ 0.15	Grain refinement

⚙️ Mechanical Properties
Property	Value	Test Standard
Hardness (Brinell)	570-640 HBW	EN ISO 6506-1
Tensile Strength	1900-2350 MPa	EN ISO 6892-1
Yield Strength (0.2%)	≥ 1350 MPa	EN ISO 6892-1
Elongation (A5)	≥ 7%	EN ISO 6892-1
Impact Energy (-40°C)	≥ 15 J	EN ISO 148-1
Impact Energy (-20°C)	≥ 20 J	EN ISO 148-1
Fatigue Limit (107 cycles)	650 MPa	ASTM D7791
Modulus of Elasticity	210 GPa	ASTM E111
Poisson’s Ratio	0.27-0.30	ASTM E132
Shear Modulus	80 GPa	ASTM E143

🔬 Physical Properties
Property	Value	Temperature Range
Density	7.85 g/cm³	20°C
Melting Point	1420-1460°C	–
Thermal Conductivity	42 W/m·K	20°C
Thermal Expansion Coefficient	12.5×10-6/K	20-100°C
Specific Heat Capacity	460 J/kg·K	20°C
Electrical Resistivity	0.20 µΩ·m	20°C
Magnetic Permeability	Ferromagnetic	20°C
Curie Temperature	760°C	–
Thermal Diffusivity	11.6 mm²/s	20°C
Coefficient of Linear Expansion	13.1×10-6/K	20-200°C

Service Support

NM600 Extreme Ultra-High Hardness Wear Steel

FAQs

Q: Is NM600 weldable?

A: Yes. NM600 is weldable but requires controlled procedures (preheat, low H electrodes, controlled interpass) and attention to carbon equivalent and HAZ toughness. Do not weld without an approved WPS for the exact plate thickness/heat.

Q: Can I bend NM600 on a press brake?

A: Not recommended for thick plates; thin plates may be cold-formed with tight radii risk. For thicker sections, design without forming or use thermal forming.

Q: What hardness should I expect on delivery?

A: Typical target 570–640 HBW, with nominal 600 HBW; insist on Brinell readings on MTC.

Q: Is NM600 better than NM500?

A: NM600 gives longer wear life in abrasive conditions but less ductility and more fabrication challenge than NM500. Choose based on abrasion vs impact balance.

Q: What standards apply to NM600?

A: GB/T 24186 (China) for NM series; Brinell hardness per ISO/EN 6506. For cross-checking equivalence see SSAB and JFE product data sheets.

Q: Are there counterfeit or mislabeled NM600 plates?

A: Yes, always verify MTC, hardness tests and supplier traceability; buy from reputable mills or qualified traders.

Q: What thickness range is commonly stocked?

A: Commercially stocked between 6–50 mm; specialized production up to 80 mm exists.

Q: Does NM600 corrode faster due to higher alloying?

A: NM600 is not corrosion resistant (it’s carbon/martensitic steel). If corrosion is a concern, plan coatings, galvanizing (limited), or use stainless overlays.

GNEE GROUP

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NM600 Extreme Ultra-High Hardness Wear Steel

What is NM600 steel plate?

What is equivalent to NM600 steel?

NM600 steel plate Specification

Critical Applications

Abrasion Resistant Steel Plate Services

Abrasion Resistant Steel Plate Packaging

FAQs