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NM500 Abrasion Resistant Steel Plate

470~540 HBW Quenched & Tempered Extreme Wear Applications

Surface Hardness: 470 ~ 540 HBW

Chinese NM500 high strength abrasion resistant steel plate — engineered for extreme wear conditions in mining, quarrying, and heavy machinery. Meets GB/T 24186-2022 standard.

Extended Service Life

470-540 HBW hardness delivers exceptional wear resistance, 7-10x longer life than structural steel.

High Strength & Toughness

Tensile strength ≥1350 MPa, impact toughness -20°C ≥21J (D grade).

Good Workability

Can be cut, bent, and welded using proper procedures and preheating.

Decoding the Grade: NM500

N 耐磨 – Wear / Abrasion resistant

M 磨 – Abrasion reinforced

500 Typical Brinell Hardness (HBW)

International Standards & Comparisons

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China (GB/T 24186)

NM500 / NM500D/E

Chemical Composition (wt%, max unless range):
C ≤0.38, Si ≤0.70, Mn ≤1.70, P ≤0.020, S ≤0.010,
Cr ≤1.50, Ni ≤1.00, Mo ≤0.65, Ti ≤0.05, B 0.0005-0.006, Als ≥0.010

Hardness: 470~540 HBW (≤70mm)

Tensile: ≥1350 MPa

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USA (ASTM / AR Standard)

AR500 / AR500F

Typical Composition (wt%):
C 0.25-0.35, Si 0.20-0.60, Mn 0.70-1.60, P ≤0.025, S ≤0.010,
Cr 0.80-1.50, Ni ≤1.00, Mo 0.20-0.60, B 0.0005-0.005

Hardness: 470~540 HBW

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Germany (DILLINGER)

XAR® 500

Typical Composition (wt%):
C ≤0.30, Si ≤0.55, Mn ≤1.60, P ≤0.020, S ≤0.010,
Cr ≤1.2, Ni ≤1.0, Mo ≤0.5, B ≤0.004

Hardness: 470~530 HBW

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Sweden (SSAB)

Hardox® 500

Typical Composition (wt%):
C 0.26-0.32, Si ≤0.70, Mn ≤1.60, P ≤0.025, S ≤0.010,
Cr ≤1.2, Ni ≤1.0, Mo ≤0.6, B ≤0.004

Hardness: 470~530 HBW

Note: NM500 provides an excellent balance of hardness and wear resistance for extreme abrasion conditions. AR500/XAR500/Hardox500 are approximate commercial equivalents.

Domestic Grade Comparison (NM500 / NM500D / NM500E)

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NM500 (Standard)

Base Grade / Extreme Wear Applications

Chemical Composition (wt%, max):
C ≤0.38, Si ≤0.70, Mn ≤1.70, P ≤0.020, S ≤0.010,
Cr ≤1.50, Ni ≤1.00, Mo ≤0.65, Ti ≤0.05, B 0.0005-0.006

Hardness: 470~540 HBW (≤70mm)
Tensile: ≥1350 MPa
Impact: Not guaranteed (by agreement)

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NM500D (Low Temperature)

D Grade / -20°C Impact Toughness

Chemical Composition (wt%, max):
C ≤0.35, Si ≤0.70, Mn ≤1.70, P ≤0.015, S ≤0.005,
Cr ≤1.50, Ni ≤1.50, Mo ≤0.65, Ti ≤0.05, B 0.0005-0.006, Als ≥0.015

Hardness: 470~540 HBW (≤60mm)
Tensile: ≥1350 MPa
Impact: ≥21J @ -20°C (Longitudinal)
CEV ≤0.64 (≤50mm) / ≤0.77 (>50mm)

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NM500E (Extra Low Temperature)

E Grade / -40°C Impact Toughness

Chemical Composition (wt%, max):
C ≤0.35, Si ≤0.70, Mn ≤1.70, P ≤0.015, S ≤0.005,
Cr ≤1.50, Ni ≤1.50, Mo ≤0.65, Ti ≤0.05, B 0.0005-0.006, Als ≥0.015

Hardness: 470~540 HBW (≤60mm)
Tensile: ≥1350 MPa
Impact: ≥18J @ -40°C (Longitudinal)
CEV ≤0.64 (≤50mm) / ≤0.77 (>50mm)

According to GB/T 24186-2022, NM500D and NM500E are low-temperature impact grades. D grade guarantees impact toughness ≥21J at -20°C, E grade guarantees ≥18J at -40°C (thickness ≤60mm).

Why Choose NM500 Wear Plate?

Superior Durability

Optimized low-carbon design with micro-alloying ensures exceptional abrasion resistance.

High Impact Toughness

≥21J at -20°C (D grade) or ≥18J at -40°C (E grade), ideal for cold climates.

Good Fabrication

Cutting, bending, drilling and welding with proper procedures and preheating.

Typical Applications

Mining & Quarrying

Dump truck bodies, chutes, hoppers, crusher liners, screening equipment

Construction Equipment

Excavator buckets, loader buckets, bulldozer blades, ground engaging tools

Heavy Transport

Tipper truck bodies, dump truck liners, mining trailer floors, railcar linings

Material Handling

Conveyor chutes, transfer points, silos, hoppers, wear liners, slurry lines

Customization Services

Cut-to-size / Precision cutting

Plasma / Laser / Waterjet cutting

Bending / Forming / Drilling

Surface treatment / Painting

Heat treatment (quenching & tempering)

Third-party inspection (SGS, BV)

Available Stock Sizes

Thickness (mm)	Width (mm)	Length (mm)	Stock Status
6 - 12	1500 - 2500	6000 - 12000	✓ In Stock
14 - 25	2000 - 2800	8000 - 12000	✓ In Stock
30 - 50	2000 - 3000	8000 - 12000	✓ In Stock
55 - 70	2000 - 3000	6000 - 10000	Made to Order

Chemical Composition (GB/T 24186-2022)

Grade	C	Si	Mn	P	S	Cr	Ni	Mo	Ti	B	Als
NM500 (max)	≤0.38	≤0.70	≤1.70	≤0.020	≤0.010	≤1.50	≤1.00	≤0.65	≤0.05	0.0005-0.006	≥0.010
NM500D/E (max)	≤0.35	≤0.70	≤1.70	≤0.015	≤0.005	≤1.50	≤1.50	≤0.65	≤0.05	0.0005-0.006	≥0.015

Mechanical Properties

Grade	Thickness	Tensile (MPa)	Elongation %	Impact (J)	Hardness HBW
NM500	≤70mm	≥1350	≥7	—	470~540
NM500D	≤60mm	≥1350	≥7	≥21J @ -20°C	470~540
NM500E	≤60mm	≥1350	≥7	≥18J @ -40°C	470~540
NM500 (optional)	70~100mm	Negotiated	Negotiated	—	450~540
Note: Tensile, elongation and impact are special requirements per GB/T 24186. For standard NM500, Brinell hardness is guaranteed.

Delivery: Quenched; Quenched + Tempered; TMCP + Tempered; or Hot Rolled (as agreed).

Technical FAQ

Welding methods?

SMAW, GMAW, FCAW. Preheat 200-250°C for thickness >20mm, low hydrogen practices.

Bending radius?

Transverse: 7t-8t, Longitudinal: 8t-9t. Not recommended for tight bends.

Cutting methods?

Plasma, waterjet, abrasive cutting. Laser cutting ≤20mm with preheating.

Hardness uniformity?

≤40mm uniform, 40-70mm slight core decrease within tolerance.

Max service temp?

Continuous ≤250°C, short peaks ≤300°C. Higher temps reduce hardness.

Impact at low temp?

D grade: ≥21J @ -20°C; E grade: ≥18J @ -40°C (≤60mm).

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