Q415NH - YB /T 4112-2013

Grade	Q415NH
Corresponding Standard	YB /T 4112-2013 Welded steel tubes with atmospheric corrosion resistance for structural purposes
Classification	Alloy Steel

Q415NH Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S ^*	Cr	Ni ^*	Cu	More
Minimum Value	-	-	-	-	-	0.3	0.12	0.2	Nb+V+Ti≤0.22%
Maximum Value	0.12	0.65	1.1	0.025	0.03	1.25	0.65	0.55	Nb+V+Ti≤0.22%

① To improve the properties of steel, one or more microalloying elements can be added: Nb (0.015% to 0.060%), V (0.02% to 0.12%), Ti (0.02% to 0.10%), and Alt ≥ 0.020%. When these elements are used together, at least one of them should meet the lower limit of the chemical composition specified.
② Alloying elements such as Mo (≤ 0.30%) and Zr (≤ 0.15%) can be added.

Q415NH Mechanical Properties

Thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Reduction of Area ψ %
t≤16	520~680	≥415	≥18
16＜t≤40	520~680	≥405	≥18
40＜t≤60	520~680	≥395	≥18

• B,C-quality class
• According to the requirements of the demander, other test temperatures can be used after negotiation between the supply and demand parties and indicated in the contract.

Approximate Comparison Table Atmospheric Corrosion Resisting Structural Steel

China	United States	International Organization for Standardization
GB	ASTM	ISO
Q415NH GB/T 4171-2008	60 A871M-03	S415W ISO 4952-2006

Q415NH Corresponding Standards(Same grade name, different standards)

1	GB /T 4171-2008
	Q415NH
2	YB /T 4112-2013
	Q415NH

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