S355J2-steel_4448.html target=_blank class=infotextkey>S355JR and S355J0 are both grades of structural steel defined in the European standard EN 10025-2. The main differences between these two grades lie in their impact testing requirements, which are designed to ensure their performance at different temperatures.
S355JR:
Impact Test Temperature: 20°C (68°F)
Notch Toughness: Tested for impact energy at room temperature (20°C).
S355J0:
Impact Test Temperature: 0°C (32°F)
Notch Toughness: Tested for impact energy at 0°C, providing better impact toughness at lower temperatures.
S355JR:
Suitable for general structural applications where moderate impact toughness is required at room temperature.
S355J0:
Better suited for applications requiring enhanced toughness in colder conditions, such as outdoor structures or areas with low ambient temperatures.
Chemical Composition: Both grades have similar chemical compositions, with the main differences arising in their impact testing requirements.
S355JR is specified for use where the material will experience temperatures around room temperature.
S355J0 is intended for use where the material may encounter colder temperatures and requires better impact toughness.
Both grades have similar mechanical properties in terms of yield strength and tensile strength, but the main distinction is their performance in low-temperature environments.
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