What is A516-70 Grade 485 steel?

ASTM A516-70 plate is also called SA516 GR 70, ASTM A516 Grade 485, ASME SA516 Grade 485. It is a hot selling boiler steel and pressure vessel plates product. Generally, it is used   for welded pressure vessels where improved notch toughness is important.

 

Chemical Composition (%) of steel A516 Gr 70

	Thickness(mm)	C	Mn	P	S	Si
Heat analysis	≤12.5	0.27	0.85-1.2	0.025	0.025	0.15-0.40
	>12.5-50	0.28	0.85-1.2
	>50-100	0.30
	>100-200	0.31
	>200	0.31

 

Mechanical Properties of steel A516 Gr 70

Tensile Strength Ksi (MPa)	Yield Strength Ksi (MPa)	Elongation Min, %
		50-200mm	≤50mm
70-90 (485-620)	38 (260)	17	21

 

Features of steel A516 Gr 70

Boiler steel A516 Gr 70 plate has good impact resistance, low temperature deformation, good welding performance, good fatigue resistance, good anti-layered cracking performance, micro-alloying, high purity, low carbon equivalent, strong resistance to sulfur and hydrogen, good dimensional tolerance and good surface quality.

 

Application of boiler steel A516 Gr 70

ASTM A516 Gr 70 boiler steel plates are mainly used for petroleum, chemical, turbine, boiler and other industries, used in the manufacture of reactors, heat exchangers, separators, spherical tanks, gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, high-pressure hydropower stations Water pipes, water turbine volutes and other equipment and components.

Other technical requirements of boiler steel A516 Gr 70

UT, AR, TMCP, CR, N, Q+T, Z15, Z25, Z35, Impact test (-20℃, -40℃), HIC, SPWHT, NACE0175 

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

 

 

The difference between S235J0 and S235J0W

 The difference between S235J0 and S235J0W is that S235J0 is a carbon structural steel and the standard is EN 10025-2. S235J0W is weathering structural steel, the standard is EN 10025-5.

The difference in chemical composition

EN 10025-2 S235J0 steel plate chemical composition

Grade	Chemical Composition
S235J0	The Element Max (%)
	C			Si	Mn	P	S	N	Cu
	≤16	＞16≤40	＞40
	0.19	0.19	0.19	-	1.50	0.040	0.040	0.014	0.60

EN 10025-5 S235J0W steel chemical composition (%)

Grade	Number	C max.	Si max.	Mn	P	S max.	N max.	Cr	Cu
S235J0W	1.8958	0.13	0.40	0.20 - 0.60	max. 0.035	0.035	0.009	0.40 - 0.80	0.25-0.55

 

The difference in mechanical properties

EN 10025-2 S235J0 steel plate mechanical properties

Grade	Mechanical Property
S235J0	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	-	360-510	360-510	350-500	340-490	-

EN 10025-5 S235J0W steel plate mechanical properties

EN 10025-5	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
S235J0W	235	225	215	215	215	195	360-510	360-510	350-500

 

The difference in application

S235J0 European standard carbon structural steel, 0°C impact, EN 10025-2 S235J0 steel is used to manufacture welding, bolting and riveting structures. S235J0W grade is a weather-resistant structural steel improved on the basis of S235J0. S235J0W steel plate is used for welding, bolting and riveting parts. This steel grade enhances the ability to resist atmospheric corrosion at ambient temperature. It is added in order to achieve corrosion resistance. Certain specific alloying elements, such as P, Cu, Cr, Ni, Mo, etc., form a protective oxide layer on the metal surface under various climatic conditions.