info@gescosteel.com
Impact Properties
Grade | Longitudinal test, typical impact energy, Charpy V 10x10 mm test specimen. | Transverse test, guaranteed impact energy, Charpy V 10x10 mm test specimen. |
Hardox 450 sheet & plate | 50 J/ -40 oC | - |
Hardox 450 Tuf 1) | - | Min. 27 J/ -20 oC 2) |
1) Impact testing is performed on thicknesses ≥ 6 mm. For thicknesses between 6 - 11.9 mm, sub-size Charpy V-specimens are used. The specified minimum value is 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 per heat and thickness group. Average of three tests.
2) Single value minimum 70% of specified average.
Chemical Composition (heat analysis)
Grade | C*) (max %) | Si*) (max %) | Mn*) (max %) | P (max %) | S (max %) | Cr*) (max %) | Ni*) (max %) | Mo*) (max %) | B*) (max %) |
CR sheet | 0.18 | 0.25 | 1.30 | 0.015 | 0.004 | 0.10 | 0.10 | 0.04 | 0.003 |
Sheet & plate | 0.26 | 0.70 | 1.60 | 0.025 | 0.010 | 1.40 | 1.50 | 0.60 | 0.005 |
The steel is grain refined. * ) Intentional alloying elements.
Mechanical Properties of HARDOX 450 | |||||
Grade | Mechanical Property | Charpy V Impact Test | |||
HADOX 450 | Yield | Tensile | Elongation | Degree | longitudinal |
Min Mpa | Mpa | Min % | -40 | J | |
1200 | 1400 | 10 | 40 | ||