Structural hollow sections Celsius® hot finished hollow sections

Celsius® hot finished hollow sections

Our innovative Celsius® range combines proven performance with complete reliability of a true hot finished hollow section to EN 10210.

Celsius® offers stronger, lighter, more cost-effective and aesthetically pleasing structures to help meet and exceed the most demanding and challenging applications. Available in a wide range of circular, square, rectangular and elliptical hollow sections. The strength and weldable qualities of Celsius® mean that it can be used for all structural and mechanical applications, including multi-storey columns, space frames, lattice beams and frames for machinery & trailers.

Made exclusively from normalized, fine grain steel the Celsius® range is fully stress-relieved with uniform mechanical properties and improved weldability thanks to a low Carbon Equivalent Value (CEV) while the controlled silicon content ensures good galvanisability.

Alongside the popular S355NH grade, we also manufacture Celsius® fully normalized hot finished hollow sections in high strength S420NH and S460NH to bring the advantages of Celsius® into a new age of light-weight, sustainable structures.

We also offer Celsius® in a weathering grade variant to provide ultimate durability in long-life, low-maintenance structures and in specific grades required for offshore structures

Celsius® hot finished hollow sections Celsius S355NH

  • Normalisierter Feinkornstahl, daher frei von inneren Spannungen und mit einer Mindeststreckgrenze von 355 N/mm2 – erlaubt Materialkosteneinsparungen und leichtere, schlankere Konstruktionen
  • Verfügbar in einer breiten Palette an kreisförmigen, quadratischen, rechteckigen und elliptischen Hohlprofilabmessungen
  • Enge Kantenradien, die die Norm übertreffen – erhöhen das ästhetische Erscheinungsbild bei Vermeidung des Sprödbruchrisikos, was bei einigen kaltgefertigten Profilen eine Gefahr darstellt
  • Konstante Abmaße, sehr gute Formbarkeit und hervorragende Schweißbarkeit, da es sich um vollberuhigten Stahl handelt
  • Für alle konstruktiven Anwendungen geeignet und zertifiziert, erfüllt alle Anforderungen der Entwurfsnormen; ohne die Risiken, die mit anderen Hohlprofilarten verbunden sind
  • Geeignet und zertifiziert für alle Anwendungen im Maschinenbau, insbesondere auch für zyklische Belastung
  • Geeignet für den Einsatz bei tiefen Temperaturen (40J @ -20°C)
  • Chargengeprüft, um die Eigenschaften des tatsächlich gelieferten Materials anzugeben. Diese sind im mitgelieferten Abnahmeprüfzeugnis zu finden
  • Klar als Celsius® 355 gekennzeichnet, mit der Gewissheit der vollständigen Rückverfolgbarkeit der Chargen
  • Technische Beratung und Unterstützung verfügbar
  • Ausgezeichnete Verfügbarkeit durch geprüfte Lagerhalter
  • Sämtliches Celsius® 355 Material ist CE-zertifiziert und erfüllt die Bauproduktenverordnung
  • Zum Verzinken geeignet

High strength hot finished hollow sections suitable for all construction and mechanical applications. Celsius® 355 is suitable for all internal and external applications to BS5950-1:2000, EN1993 and BS5400.

Celsius® 355 hollow sections are supplied with a minimum yield strength of 355 N/mmand comply fully with the European Standard for hot finished structural hollow sections, EN10210:S355NH.

Yield strength;ReHmin N/mm2; Tensile strength;
RmN/mm2
Elongation % min
L0;= 5,65 √S0
specimen
Impact strength
10mm x 10mm
Carbon equivalent
(CEV) max
T ≤ 16mm T > 16mm 3mm < T ≤ 100mm T ºC J  
355 345 470-630 22 -20 40 0.43

Chemical composition % by mass

C max Si max Mn P max S max Nb max V ma Al total min Ti max Cr max Ni max Mo max Cu max N max
0.20 0.50 0.90
1.65
0.035 0.030 0.050 0.12 0.020 0.03 0.30 0.50 0.10 0.35 0.020

Celsius® 355 is produced from fully-killed steel – critical to formability and weldability.

Inspection and testing
Celsius® hollow sections EN10210:S355NH are subject to specific inspection and testing and are supplied with an inspection certificate type 3.1 to EN10204.

Dimensional tolerances EN10210: Part 2

Celsius S355NH is manufactured to the tolerances defined in EN 10210: Part 2. Tighter tolerances are available on request and if you require specific tolerances in excess of this, please contact us.

  Circular/Ellipticals Square/Rectangular
Outside dimension (D B and H) Circular ±1% with a min of ±0.5mm and maximum of ±10mm
Ellipticals ±1% with a min of ±0.5mm (The permitted tolerance
is twice the value for H<250)
±1% with a min of ±0.5mm
Thickness (T) -10%
Note: Positive deviation limited by mass tolerance
-10%
Note: Positive deviation limited by mass tolerance
Squareness of side - 90 degrees ±1 degree
External corner profile - 2T max at each corner*
(EN10210 has 3T max)
Concavity/convexity (x) - – ±1% of the side, measured independently
of the tolerance on the outside dimension
Twist (V) Ellipticals: 2mm plus 0.5mm/m max
(The permitted tolerance is twice the value for H<250)
2mm plus 0.5mm/m max
Section is placed on a flat surface with one end
held flat. At the other end the height difference of
the two lower corners is taken
Mass (M) ±6% on individual lengths ±6% on individual lengths
Straightness Maximum 0.2% of the total length & 3mm over every 1m length
Ellipticals: The permitted tolerance is twice the value for H<250
Maximum 0.2% of total length & 3mm over every
1m length
Length +150mm/-0mm +150mm/-0mm
Out-of-roundness (O) Circular 2% for hollow sections having a diameter to thickness
ratio not exceeding 100
-

* Unless shown otherwise

Celsius S355NH is available across the size range indicated in the tables, minimum order quantities may apply. Intermediate sizes may also be available. For further information or specific requests, please contact us.

Celsius S355NH is available in standard lengths from 6.0m to 14.5m for sizes up to 100/100 or 120/80 and up to 15.3m for all other sizes.

Circular hollow sections (CHS)   
mm 3.2 3.6 4.0 5.0 6.3 8.0 10.0 12.5 16.0 17.5
42.4                    
48.3                    
60.3                    
76.1                    
88.9                    
114.3                    
139.7                    
168.3                    
193.7                    
219.1                    
244.5                    
273.0                    
323.9                    
355.6                    
406.4                    
457.0                    
508.0                    
Square hollow sections (SHS)   
mm 3.2 3.6 4.0 5.0 6.3 8.0 10.0 12.5 16.0 17.5
40/40                    
50/50                    
60/60                    
70/70                    
80/80                    
90/90                    
100/100                    
120/120                    
140/140                    
150/150                    
160/160                    
180/180                    
200/200                    
250/250                    
300/300                    
350/350                    
400/400                    
Rectangular hollow sections (RHS)   
mm 3.2 3.6 4.0 5.0 6.3 8.0 10.0 12.5 16.0 17.5
50/30                    
60/40                    
80/40                    
90/50                    
100/50                    
100/60                    
120/60                    
120/80                    
150/100                    
160/80                    
200/100                    
200/120                    
200/150                    
250/100                    
250/150                    
300/100                    
300/200                    
350/150                    
350/250                    
400/200                    
400/300                    
450/250                    
500/200                    
500/300                    
Elliptical hollow sections (EHS)   
mm 8.0 10.0 12.5 16.0
300/150        
400/200        
500/250        

Celsius S355NH is manufactured and CE marked according to EN 10210-1&2:2006 grade S355NH.

All Celsius products are manufactured under Factory Production Control conditions and FPC certification is available upon request. The full Declaration of Performance for all of our Celsius range can be downloaded from our DoP download centre.

Our team of dedicated engineers are on-hand to support engineers to make the most of our range of Celsius fully normalized hollow sections. Use the live chat, email us on technicalmarketing@tatasteeleurope.com or phone on +44 (0)1536 404561 to speak to the team.

We also provide a number of free tools to make your specification of Celsius hollow sections as simple as possible:

  • Celsius design app - for quick and easy sizing of hollow sections (iOS and Android)
  • The Blue Book – the definitive guide to designing across our full range
  • Welded Joints calculation software
  • Firesoft for designing concrete-filled, fire-resistant columns
  • BIM Objects – available to download from our innovative BIM DNA Profiler

Product Downloads

Please Register or  to gain access to locked downloads.

Celsius® 355 NH technical guide image.jpg



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