What are the differences between S235J2 steel and S235J2W steel?

Difference in steel application

EN 10025-2 S235J2 grade is a structural grade steel with a minimum yield strength of 235 MPa which widely used in the engineering and construction industries.

EN 10025-2 S235J2W grade is a structural steel material with improved atmospheric corrosion resistance.

 

Difference in chemical composition

EN 10025-2 S235J2 steel plate chemical composition

Grade	Chemical Composition
S235J2	The Element Max (%)
	C			Si	Mn	P	S	N	Cu
	≤16	＞16≤40	＞40
	0.19	0.19	0.19	-	1.50	0.035	0.035	-	0.60

 

EN 10025-5 S235J2W steel chemical composition (%)

EN 10025-5	Number	C max.	Si max.	Mn	P	S max.	N max.	Cr	Cu
S235J2W	1.8961	0.13	0.40	0.20 - 0.60	max. 0.035	0.030	–	0.40 - 0.80	0.25-0.55

 

Difference in mechanical properties

EN 10025-2 S235J2 steel plate mechanical properties

Grade	Mechanical Property
S235J2	Yield Strength mm Min Mpa									Tensile Strength mm Min Mpa
	≤16	＞16 ≤ 40	＞40 ≤ 63	＞63 ≤ 80	＞80 ≤ 100	＞100 ≤ 150	＞150 ≤ 200	＞200 ≤ 250	＞250 ≤ 400	＜3	≥ 3 ≤ 100	＞100 ≤ 150	＞150 ≤ 250	＞250 ≤ 400
	235	225	215	215	215	195	185	175	165	360-510	360-510	350-500	340-490	330-480

 EN 10025-5 S235J2W steel plate mechanical properties

Grade	Min. Yield Strength Reh MPa						Tensile Strength Rm MPa
	Nominal Thickness (mm)						Nominal Thickness (mm)
	≤16	>16 ≤40	>40 ≤63	>63 ≤80	>80 ≤100	>100 ≤150	<3	>3 ≤100	>100 ≤150
S235J2W	235	225	215	215	215	195	360-510	360-510	350-500