A266 Grade 4 A266 Class 4 - ASTM A266/A266M-2024

Grade	A266 Grade 4
Old Grade
Corresponding Standard	ASTM A266/A266M-2024 Carbon Steel Forgings for Pressure Vessel Components
Classification	Carbon Steel

A266 Grade 4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	-	0.15	0.8	-	-
Maximum Value	0.3	0.35	1.35	0.025	0.025

A266 Grade 4 Mechanical Properties

Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
485~655	≥250	≥18	≥33

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!