Общее описание продукции
Normalized structural steel heavy plate.
SSAB Multisteel SNL is hot rolled structural steel for general steel constructions. SNL = Structural Normalized Low Temperature.
Exceeding the requirements of several standard steel grades, SSAB Multisteel SNL is a versatile structural steel for fabricated products and steel frame structures. Formability and highly consistent quality guarantee fast, uninterrupted production, generating clear savings in the costs of material management.
SSAB Multisteel SNL exceeds several steel standards and is available as six standard steel grades: S355N and S355NL according to EN 10025-3 and S355K2+N, S355J2+N, S355J0+N and S355JR+N according to EN 10025-2.
CE marking:
SSAB Raahe Works is authorized to use the CE marking for structural steels according to EN 10025-2 and EN 10025-3 based on EN 10025-1.
The CE marking is marked on an extra page of inspection certification 3.1.
Типоразмерный ряд
SSAB Multisteel SNL is available in thickness of 5.00 - 150.00 mm.
Механические свойства
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The mechanical properties are tested transverse to the direction of rolling.
Ударная вязкость
SSAB Multisteel SNL
EN 10025-3 S355NL
EN 10025-3 S355N
EN 10025-2 S355K2+N
EN 10025-2 S355J2+N
EN 10025-2 S355J0+N
The impact test is made longitudinal to the rolling direction in compliance with EN 10025-1 and EN 10025-2.
Химический состав (ковшевая проба)
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Углеродный эквивалент CEV
Допуски
Thickness ¾ from EN 10029 Class A.
Width and length according to EN 10029.
Flatness tolerance 4 mm/m.
Surface according to EN 10163-2 Class A subclass 1.
Условия поставки
Normalized.
Coating
Shot blasted & primed surface is available upon request.
Certificates
SSAB Multisteel SNL provides three different certificates:
EN 10204-3.1 to SSAB Multisteel SNL.
EN 10204-3.1 +CE to S355NL/N EN 10025-3.
EN 10204-3.1 +CE to S355K2/J2/J0/JR+N EN 10025-2.
Рекомендации по обработке
Welding:
Weldability is excellent with all welding processes. Increased working temperature requirements are less than those of the corresponding strength grades of standard steels. This means easier welding and cost savings under both workshop and site welding conditions.
Needed working temperatures for thick plates please consult SSAB Tech Support.
Forming:
SSAB Multisteel offers better formability properties than standard steels. Successful forming requires that the manufacturer uses good workshop techniques. Worn tools, poor lubrication, scratches on the surface of the steel as well as edge burrs will all reduce forming quality.
Guaranteed minimum bending radius for all directions is 1.5 x t up to 30 mm thick plate where t = plate thickness.
Heat treatment:
Recommendations for stress relieving and normalizing
Stress relieving 550 – 600°C (target 580°C)
2 minutes/millimeter of thickness, however, 30 minutes minimum. Slow cooling in the furnace.
Normalizing 900 – 940°C (target 920°C)
1 minute/millimeter of thickness, however, 20 minutes minimum. Cooling in free air.
Информацию об обработке можно найти в брошюрах SSAB на сайте www.ssab.com или связаться с технической поддержкой.
Необходимо соблюдать меры предосторожности при гибке, сварке, резке, шлифовании и других механических обработках.