DIN17100 St 52-3U/ DIN17100St 52-3N

Steel Plates Resistant to Weathering grades are used for manufacturing welded, riveted or bolted structures, e. g. in bridge, and vehicle construction. In general, the specific rust-building properties of Allwesta steel grades make surface protections of structures built of this steel grade unnecessary, provided that the 'Stahl-Eisen-Werkstoffblatt' (Iron and steel material sheet) 087 Lieferung, Verarbeitung und Anwendung(Weatherresistant structural steel, guidelines for delivery, processing and application) is observed.

The user of these steel grades must make sure that his calculation, design and processing methods are appropriate for the material and comply with the state-of-theart. The good properties of Allwesta steel grades are not negatively affected by cold or hot-forming. St 52-3U/ St 52-3N are recommended for cold-forming. Suitability for cold-forming must be agreed upon in the order.

Specimens were fabricated from low-carbon structural steel St 52-3U/ St 52-3N conformed to JUS EN 10025. 2003 Standard specification. Mechanical properties of the steel are given in Table 1.

Table 1. Mechanical properties of steel

Grade	Tensile Strength	Min Yield Strength at 16mm N/mm	Max Thk for Specified Yield N/mm	Impact Energy(J℃) Nominal Thickness
Grade	Tensile Strength	Min Yield Strength at 16mm N/mm	Max Thk for Specified Yield N/mm	Temp℃	﹤150mm	﹥150mm ﹤250mm
St 52-3U	490/630	355	250	0	27	23
St 52-3N	490/630	355	250	-20	27	23

The chemical composition, shown in Table 2, conformed with the requirements of the St 52-3U/ St 52-3N Standard specification.

Table 2. Chemical composition of steel

Grade		C	Mn	Si	P	S
St 52-3U		0.22	1.60	0.60	0.040	0.40
St 52-3N	0.20		1.60	0.55	0.035	0.035

Source:

Tags: DIN st52-3, ST52-3 STEEL PLATE, LOW ALLOY HIGH STRENGTH STEEL ST52-3, ITS REFERING STEEL:ST52-3U, ST52-3N