AR450 equivalent grades: ASTM, EN, JIS, GB, DIN
AR450 is abrasion-resistant quenched and tempered plate, nominal 450 HBW specified in . Every grade in the database that can stand in for it is listed below, drawn from 3 standard systems, each with the reason it does or does not match exactly. The full AR450 data sheet carries the composition and mechanical tables.
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For AR450 the exact matches are Hardox 450, and material bought as one is accepted as the other without deviation. The near matches are AR400, AR500; what differ is the tested condition, not the alloy. 52100, S690QL, S355J2 and 2 more serve the same purpose without being the same steel, so a substitution there needs the design re-checked rather than the certificate. The cross-reference below covers 5 in Proprietary (trade names), 1 in AISI / SAE, 2 in EN (European).
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| Hardox 450 | Proprietary (trade names) | Identical | SSAB's product in this class. Specifying it by name specifies one supplier; specifying through-thickness hardness band, guaranteed impact energy and temperature, bend radius at thickness and tolerance class lets several mills quote the same requirement. |
| AR400 | Proprietary (trade names) | Near | 370–430 HBW: easier to bend (about 3 × thickness), lower preheat, better toughness margin, cheaper per tonne. The default where the part is complex or impact-loaded. The background on what AR designations mean and how hardness relates to wear is set out on that page. |
| AR500 | Proprietary (trade names) | Near | 470–530 HBW: another 15–20 % of abrasion life, with bend radii around 5 × thickness and a narrow welding window. The step from 450 to 500 costs considerably more in fabrication than the step from 400 to 450. |
| 52100 | AISI / SAE | Functional | Bearing steel at 60–64 HRC, around 700 HBW. Listed to mark where the plate route ends: above about 550 HBW the practical answers are carbide overlay, cast chrome iron, a tool steel insert or a ceramic liner, not a harder plate. |
| S690QL | EN (European) | Functional | EN 10025-6 S690QL: quenched and tempered structural plate, 690 MPa minimum yield, about 250 HBW, with real design values in the structural codes. The grade for the member that carries the load; AR450 is the lining bolted to it. |
| S355J2 | EN (European) | Functional | EN 10025-2 S355J2 at roughly 150 HBW — the reference point for wear calculations. AR450 lasts roughly four to five times as long in sliding abrasion. |
| Creusabro 4800 | Proprietary (trade names) | Functional | ArcelorMittal's alternative route: delivered around 370 HBW but **work-hardening to about 440–470 HBW in service** through a titanium-carbide and transformation-induced plasticity mechanism. It is easier to form and cut at delivery hardness and reaches AR450 performance after bedding in — a genuinely different trade-off, not a cheaper 450. |
| Mn13 | Proprietary (trade names) | Functional | Austenitic manganese steel (Hadfield steel, around 12–14 % Mn), as-cast at 200 HBW and work-hardening past 500 HBW at the surface under heavy impact. It outlasts martensitic wear plate in **gouging** service — crusher jaws, cones, rail frogs — and is far worse in pure sliding abrasion. |
Identical, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
AR450 in Proprietary (trade names)
- Hardox 450 — Identical SSAB's product in this class. Specifying it by name specifies one supplier; specifying through-thickness hardness band, guaranteed impact energy and temperature, bend radius at thickness and tolerance class lets several mills quote the same requirement.
- AR400 — Near 370–430 HBW: easier to bend (about 3 × thickness), lower preheat, better toughness margin, cheaper per tonne. The default where the part is complex or impact-loaded. The background on what AR designations mean and how hardness relates to wear is set out on that page.
- AR500 — Near 470–530 HBW: another 15–20 % of abrasion life, with bend radii around 5 × thickness and a narrow welding window. The step from 450 to 500 costs considerably more in fabrication than the step from 400 to 450.
- Creusabro 4800 — Functional ArcelorMittal's alternative route: delivered around 370 HBW but **work-hardening to about 440–470 HBW in service** through a titanium-carbide and transformation-induced plasticity mechanism. It is easier to form and cut at delivery hardness and reaches AR450 performance after bedding in — a genuinely different trade-off, not a cheaper 450.
- Mn13 — Functional Austenitic manganese steel (Hadfield steel, around 12–14 % Mn), as-cast at 200 HBW and work-hardening past 500 HBW at the surface under heavy impact. It outlasts martensitic wear plate in **gouging** service — crusher jaws, cones, rail frogs — and is far worse in pure sliding abrasion.
AR450 in AISI / SAE
- 52100 — Functional Bearing steel at 60–64 HRC, around 700 HBW. Listed to mark where the plate route ends: above about 550 HBW the practical answers are carbide overlay, cast chrome iron, a tool steel insert or a ceramic liner, not a harder plate.
AR450 in EN (European)
- S690QL — Functional EN 10025-6 S690QL: quenched and tempered structural plate, 690 MPa minimum yield, about 250 HBW, with real design values in the structural codes. The grade for the member that carries the load; AR450 is the lining bolted to it.
- S355J2 — Functional EN 10025-2 S355J2 at roughly 150 HBW — the reference point for wear calculations. AR450 lasts roughly four to five times as long in sliding abrasion.
Superseded names for AR450
- Hardox 450 — SSAB trademark: The most widely stocked single wear plate in the world and the usual reference for the class. Hardox is a registered trademark of SSAB; the name is used here to identify the product.
- XAR 450 / Dillidur 450 — ThyssenKrupp / Dillinger trademarks: Durostat 450 (voestalpine), Brinar 400/500 bracket this hardness in the voestalpine and Buderus ranges.
- Quard 450 / Raex 450 — NLMK / SSAB trademarks: Abrazo 450 (Ancofer), Everhard 450 (JFE). Creusabro 4800 (ArcelorMittal) is sold against this class but works by work-hardening in service rather than by delivered hardness.
- Hardox 450 HiTuf / XAR HT — producer variants: Higher-toughness versions at the same hardness, for impact-loaded parts in thick section.
Key data for AR450
Carbon≤ 0.26 %
Standard
Full composition, mechanical properties by thickness, heat treatment and applications for AR450 →
Verified against . Last checked: October 2026.