GB/T 5310 20G boiler steel tubes

Posted:2018-08-10 11:28:11

20G is the GB2310-95 standard steel grade, which is the most commonly used steel for boiler steel tubes. Its chemical composition and mechanical properties are basically the same as those of 20 sheets. The steel has certain normal temperature and medium-high temperature strength, low carbon content, good plasticity and toughness, and good cold forming and welding performance.

Chemical Compositions(%) of GB 5310-2008

Steel grade	C	Si	Mn	P	S	Cr	Mo	Cu	Ni	V
20G	0.17-0.24	0.17-0.37	0.35-0.65	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20	≤0.25	≤0.08

Mechanical Properties of GB5310-2008

Steel Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)
20G	410-550	245	24

20G specification can be offered by KATALOR ,we are professional 20G suppliers and manufacturer in China, if you need 20G price and application ,please contact us.

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