Grade C250
Corresponding Standard AS /NZS 1163-2016(+A1 2017)
Cold-Formed Structural Steel Hollow Sections
Classification Carbon Steel
C250 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni * Cu * Mo Ti Al More
Minimum Value - - - - - - - - - - - CE≤0.25
Maximum Value 0.12 0.05 0.5 0.03 0.03 0.15 0.25 0.25 0.1 0.04 0.1
℗ Limits specified are for soluble or total aluminium.
◎ Micro-alloying elements ≤0.03. Applies to niobium and vanadium only. However, niobium greater than 0.010% is not permitted.
* Possible elements.
C250 Mechanical Properties
diameter/thickness
d/t
mm
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
d/t≤15 ≥320 ≥250 ≥18①
≥14②
15<d/t≤30 ≥320 ≥250 ≥20①
≥16②
d/t>30 ≥320 ≥250 ≥22①
≥18②
C250 Corresponding Standards(Same grade name, different standards)

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