Same hardness class and duty. AR500 is the North American mill-class name, NM500 the GB/T 24186 national-standard grade with published chemistry caps — for export sourcing, NM500 certificates are usually easier to specify and verify.

Grades · Wear-Resistant Plate · AR500

AR500

Data under review

AR500 is the 500-class abrasion-resistant plate of the North American market — again a hardness class (about 460–540 HBW) rather than an ASTM chemistry grade, widely used for wear liners and for steel targets. The composition shown is typical mill chemistry; the binding purchase requirements are hardness range and flatness, verified on the MTC.

Hardness460–540 HBW

DIN— (cf. XAR500 class)

AISIAR500 class

GBNM500 (GB/T 24186, comparable class)

CategoryWear-Resistant Plate

Chemical composition

Element	Content (%)
C	≤0.35
Si	≤0.70
Mn	≤1.60
P	≤0.025
S	≤0.015
Cr	≤1.00
Ni	≤1.00
Mo	≤0.50
B	≤0.004

Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.

Properties

Hardness	460–540 HBW
Tensile strength	≥1450 MPa (typ.)
Density	7.85 g/cm³

Heat treatment

Delivered quenched and tempered; avoid heating above ~200–250 °C in service, forming or PWHT.

Equivalent grades

Standard	Designation
din	— (cf. XAR500 class)
aisi	AR500 class
gb	NM500 (GB/T 24186, comparable class)

Compare side by side: AR500 vs NM500

Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.

Applications & Processing

Applications: High-wear liners and buckets, shredder parts, shooting targets, mining and cement equipment.

Processing: Forming radii ≥4–6× thickness; preheat for welding (100–200 °C by thickness); waterjet/plasma cutting preferred; machining is carbide-only work.

FAQ

AR500 vs NM500?: Same hardness class and duty. AR500 is the North American mill-class name, NM500 the GB/T 24186 national-standard grade with published chemistry caps — for export sourcing, NM500 certificates are usually easier to specify and verify.

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Source: Mill AR-plate datasheets (hardness-defined class; chemistry typical, not standard-controlled) · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.