Relia® 400, 450, 500

Quality Wear Resistant Plates

Relia® is a range of high hardness, conventional low-alloyed martensitic steels, which obtain their hardness through intense water quenching during plate manufacturing. Relia® steel plates offer outstanding resistance to abrasion typically 3 to 6 times higher than 355MPa-class construction steel, although the actual performance may vary depending on the type of wear and operating conditions. The use of Relia® plates will extend the service life of wear parts and machinery components over standard construction steel, without sacrificing on quick and easy fabrication in the workshop. Relia® plates are available in 3 nominal hardness levels 400, 450 and 500 HBW and 2 product specification levels to meet a wide range of practical requirements:structural parts.

  • Relia® plates offers entry-level products with the main emphasis on surface hardness.
  • Relia®  plates is carefully optimised to offer superior properties and higher service level for easy and quick fabrication. In addition to high superficial hardness, Relia® plates offer toughness, uniform hardness, enhanced weldability, improved cold formability and narrow plate manufacturing tolerances.

Relia® wear resistant steels are the preferred solution for consistent and reliable processing behavior in the workshop combined with optimal in service performance.


Relia® 400, 450, 500 series are proprietary grades developed by Industeel. There exists no engineering standard for plates intended for wear resistant applications.

Technical characteristics

Typical values (weight %)


Technical characteristics Relia® 400 Relia® 450 Relia® 500
min max min max min max
Chemical composition C 0.18 0.20 0.30
Mn 1.90 1.50 1.50
P 0.02 0.02 0.02
S 0.003 0.003 0.003
B 0.004 0.004 0.004
Cr + Ni + Mo 1.5 1.6 2.0
Nb + V + Ti 0.10 0.12 0.12
Hardness HBW 360 440 410 490 460 540
Tensile test(1) YS 0.5 (MPa) 1100 1200 1400
TS (MPa) 1250 1400 1600
Total Elong (%) 13 10 10

Notes: (1) Typical values for 15 mm plate thickness (provided for reference information only)


For more technical details :


Relia® 400, 450, 500

Download the complete datasheet

Technical data and information are to the best of our knowledge at the time of publication. However, they may be subjected to some slight variations due to our ongoing research programmes. Therefore, we suggest that information be verified at time of enquiry or order. Furthermore, in service, real conditions are specific for each application. The data presented here are for the purpose of description only, and can be considered as guarantees only when written formal approval has been provided by our company. Industeel reserves the right to change its product range at any time without prior notice.