Hardox® 450

Hardox® 450 is probably the world’s most recognized wear-resistant steel, with tight tolerances and excellent structural properties, only from Sai Steel Trading Corporation. With a nominal hardness of 450 HBW, Hardox® 450 combines good bendability and excellent weldability. The extra 50 HBW hardness over our Hardox® 400 grade provides better dent and abrasion resistance as well as longer wear life. Or you can use the additional hardness to reduce plate thickness and get lighter equipment.

What is Hardox® 450?

Hardox® 450 has been setting the benchmark for quality steel for more than 30 years, for good reason. It has a solid reputation as a highly versatile, abrasion-resistant steel that also has structural properties. With an extra 50 HBW hardness over AR 400 grades, it provides additional wear resistance for an extended service life with similar toughness as an AR 400 steel. This allows for more high-performing buckets, dump bodies and other equipment that lasts longer and still can take impact forces without compromising structural integrity.

Hardox® 450 leaves S235 and S355 steel behind

Hardox® 450 consistently outperforms mild steel, whether it’s S235, S355, A36, grade 50, A514, SS400, S45C or any AR 400 grade. That’s why it’s the industry standard for hard-wearing, hard-working equipment. Mild steel simply doesn’t have the strength to enable modern excavators or other machines to perform at their full potential. Premature maintenance or repairs just because the business end of your equipment isn’t hard or strong enough is neither convenient nor cost-effective. When switching to Hardox® 450 from such steels, expect a more productive operation with less downtime.

Same,Same, only more sustainable

Hardox® 450 is a new version of Hardox® wear plate that maintains all the qualities that made Hardox® 450 the global benchmark for premium wear steel. The ultimate sustainable choice,and produced using recycled steel in a process powered by carbon-free electricity and biogas – resulting in virtually no carbon emissions from fossil fuels. With this innovative steel, you can take your sustainability goals to the next level.

Hardox® 450 is more than a number

omparing wear steels on the basis of hardness only is not enough. Hardox® 450 is different than your average AR 450 steel. It starts already in the quenching and tempering process at the steel mill, giving Hardox® 450 its guaranteed through-thickness hardness. Your advantage? Outstanding, dependable and predictable performance, throughout the service life of your equipment.
Additionally, Hardox® 450 comes with guarantees for thickness, flatness, and bending performance. These properties ensure predictable processing in the workshop. Every plate you work will behave just like the one before it. There won’t be any unexpected surprises – great news for every production manager.

Ready to step up a grade from AR450?

Hardox® 450 has been state-of-the-art in wear steel for a long time, and it will stick around. That shouldn’t stop you from exploring newer grades of Hardox® steel. Hardox® 500 Tuf has taken the toughness of Hardox® 450 and added 50 HBW in extra hardness. May not sound much but the effect on wear life is impressive. Calculations with the Hardox® WearCalc app show that Hardox® 500 Tuf can increase wear life compared to Hardox® 450 by close to 50%.

Where is Hardox® 450 used?

If we were to list industries where Hardox® 450 isn’t used, it would be a very short list. Wear is a challenge in most industries, and Hardox® 450 has been the go-to solution to meet these challenges. Here are some machines and equipment that use Hardox® 450: Concrete mixers, snow blowers, roll-off containers, excavator and front loader buckets, grapples, shears, garbage trucks, dump trailer bodies, concrete drums, asphalt rollers, potato harvesters, recycling tools, crushers, chutes – just to mention a few.

Dimension Range

Hardox® 450 is available in thicknesses of 3.2 – 160 mm as plate, as sheet in thicknesses 2.0 – 8.0 mm and as CR sheet in thicknesses 0.8 – 2.1 mm.
Hardox® 450, is now available in thicknesses ranging from 4.0 to 25.4 mm. For plate thicknesses over 80 mm, the preferred width is 1650 mm. More detailed information on dimensions is provided in the dimension program.

Mechanical Properties

Product	Thickness (mm)	Hardness ²⁾ (HBW)	Typical yield strength (MPa), not guaranteed
Hardox® 450 CR sheet	0.8 – 2.10	425 – 475 ³⁾	1250
Hardox® 450 sheet	2.0 – 8.0	425 – 475 ³⁾	1250
Hardox® 450 plate ¹⁾	3.2 – 80.0	425 – 475	1250
Hardox® 450 plate	80.1 – 103.0	410 – 475	1250
Hardox® 450 plate	103.1 – 160.0	390 – 475	1250

¹⁾ Hardox® 450 is available in thicknesses of 4.0 – 25.4 mm as plate.

²⁾ Brinell hardness, HBW, according to EN ISO 6506-1, on a milled surface 0.5 – 3 mm below surface. At least one test specimen per heat and 40 tons.

³⁾ Hardness test is not performed or guaranteed for Hardox® products with thicknesses < 2.5 mm. The tabulated hardness values for thickness < 2.5 mm is a conversion from the tensile strength.
For more information please see the datasheet 2067- Hardness conversion of thin Hardox® wear sheet.

The nominal thickness of supplied plates will not deviate more than +/- 15 mm from the thickness of the test specimen used for hardness testing.

Hardox^® wear plate is through-hardened. Minimum core hardness is 90 % of the guaranteed minimum hardness.

Impact Properties

¹⁾ Impact toughness measured upon agreement. For thicknesses between 3 mm and 11.9 mm, subsize Charpy V-specimens are used. The specified impact toughness is then proportional to the cross-sectional area of the test specimen, compared to a full-size specimen (10 x 10 mm). Impact testing according to ISO EN 148. Average of three tests.

²⁾ Typical value for 20 mm.

Product	Longitudinal test, typical impact energy, Charpy V 10×10 mm test specimen ¹⁾
Hardox® 450 sheet & plate	50 J / -40 °C ²⁾

Chemical Composition (heat analysis)

Product type	C^*) (max %)	Si^*) (max %)	Mn^*) (max %)	P (max %)	S (max %)	Cr^*) (max %)	Ni^*) (max %)	Mo^*) (max %)	B^*) (max %)
CR sheet	0.19	0.30	1.50	0.020	0.005	0.10	0.10	0.05	0.004
Sheet & plate	0.26	0.70	1.60	0.025	0.010	1.40	1.50	0.60	0.005

Carbon Equivalent CET(CEV)

Product type	CR sheet	Sheet	Plate	Plate	Plate	Plate	Plate	Plate
Thickness (mm)	0.8 – 2.10	2.0 – 8.0	3.2 – 4.9	5.0 – 9.9	10.0 – 19.9	20.0 – 39.9	40.0 – 80.0	80.1 – 160.0
Max CET(CEV)	0.36 (0.49)	0.36 (0.49)	0.37 (0.48)	0.38 (0.49)	0.39 (0.52)	0.41 (0.60)	0.43 (0.74)	0.41 (0.67)
Typ CET(CEV)	0.32 (0.46)	0.33 (0.47)	0.33 (0.46)	0.33 (0.45)	0.36 (0.48)	0.38 (0.56)	0.40 (0.71)	0.39 (0.64)

Our Vision

To establish Sai Steel as a globally recognized, tender-ready manufacturing hub for custom fabrication, industrial components, and engineered structures. Through continuous investment in technology, export infrastructure and partnerships, we aim to lead in quality, precision and service excellence across continents.

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