Grade A234 WP12 CL1
Corresponding Standard ASTM A234/A234M-2023
Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
Classification Alloy Steel
A234 WP12 CL1 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.05 - 0.3 - - 0.8 0.44
Maximum Value 0.2 0.6 0.8 0.045 0.045 1.25 0.65
• When fittings are of welded construction, the grade and marking symbol shown above shall be supplemented by letter “W”. e.g. WPBW
A234 WP12 CL1 Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
≥415 ≥220 long. :
L0=4D: ≥22*
L0=50: ≥30©
tr. :
L0=4D: ≥14*
L0=50: ≥20©
• L0 Gauge length, Unit mm. long. Longitudinal, tr. Transverse

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