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Ultra High strength, Seamless, Hot Rolled Hollow Sections from ISMT (conforming to EN 10210)

ISMT - UHS™ Structural Tubes Content

ISMT - UHS™ Structural Tubes Table related Content

Chemical analysis (%)

GRADECSiMnPSN
Specified
thickness( mm)
     
40
S235JRH0,171,400,0400,0400,009
S275J0H0,201,500,0350,0350,009
S275J2H0,201,500,0300,030
S355J0H0,220,551,600,0350,0350,009
S355J2H0,220,551,600,0300,030
S355K2H0,220,551,600,0300,030

 

Carbon Equivalents (cev) %

GRADEFor specified thickness mm
 16 16 40
S235JRH0,370,39
S275J0H0,410,43
S275J2H0,410,43
S355J0H0,450,47
S355J2H0,450,47
S355K2H0,450,47

 

Mechancial Properties

GRADEMin. Yield Strength (ReH) MpaTensile Strength Rm) MPaElongation % MinimumMin Impact Strength
 Specified thickness mm/td>Specified thickness mmSpecified thickness mm  
   Long.Transv.T°CJ
  1616 40 33 40 40 40  
S235JRH235225360-510360-51026242027
S275J0H275265430-580410-5602321027
S275J2H275265430-580410-5602321-2027
S355J0H355345510-680470-6302220027
S355J2H355345510-680470-6302220-2027
S355K2H355345510-680470-6302220-2040

Chemical analysis (%)

GRADECSiMnPSNbVAl tot.TiCrNiMoCuN
S275NH 0.20 0.400.50-1.40 0.035 0.030 0.050 0.08 0.020 0.03 0.30 0.30 0.10 0.35 0.015
S275NLH 0.20 0.400.50-1.40 0.030 0.025 0.050 0.08 0.020 0.03 0.30 0.30 0.10 0.35 0.015
S355NH 0.20 0.500.50-1.40 0.035 0.030 0.050 0.12 0.020 0.03 0.30 0.50 0.10 0.35 0.020
S355NLH 0.18 0.500.50-1.40 0.030 0.025 0.050 0.12 0.020 0.03 0.30 0.50 0.10 0.35 0.020
S420NH 0.22 0.601.00-1.70 0.035 0.030 0.050 0.20 0.020 0.03 0.30 0.80 0.10 0.70 0.025
S420NLH 0.22 0.601.00-1.70 0.030 0.025 0.050 0.20 0.020 0.03 0.30 0.80 0.10 0.70 0.025
S460NH 0.22 0.601.00-1.70 0.035 0.030 0.050 0.20 0.020 0.03 0.30 0.80 0.10 0.70 0.025
S460NLH 0.22 0.601.00-1.70 0.030 0.025 0.050 0.20 0.020 0.03 0.30 0.80 0.10 0.70 0.025

 

Carbon Equivalents (CEV) %

GRADEMaximum Carbon Equivalent (CEV)
 For specified thickness mm
 16 16 40
S275NH0.400.40
S275NLH0.400.40
S355NH0.430.43
S355NLH0.430.45
S420NH0.500.52
S420NLH0.500.52
S460NH0.530.55
S460NLH0.530.55

 

Mechanical properties

GRADEMin. Yield Strength
(ReH) MPa
Tensile Strength
(Rm) MPa
Elongation % MinimumMinimum Impact Strength*
 Specified thickness mmSpecified thickness mmSpecified thickness mmT°C/J
 = 1616 = 40 Long.Transv.  
S275NH275265370-5102422-2040
S275NLH275265370-5102422-5027
S355NH355345470-6302220-2040
S355NLH355345470-6302220-5027
S420NH420400520-6801917-2040
S420NLH420400520-6801917-5027
S460NH460440540-7201715-2040
S460NLH460440540-7201715-5027

application in the construction of bridges, cranes, off-shore structures, buildings, ships and other structures where reduction of dead weight without any loss of load bearing capacity is critical.

Typical characteristics of these tubes are high yield strengths and good toughness with the guarantee of chemistry that is suitable for welding. Tubes are produced as per following chemical analysis that guarantee the required mechanical properties which generally conform to EN 10297 specifi cation.

CHEMICAL ANALYSIS (%)

CMnvcPSNiVCrMo
0.201.700.600.0250.0151.200.120.500.50

 

Mechanical Properties

GRADETENSILE PROPERTIESIMPACT TEST*
 Rp02 (MPa) minRm (MPa) minA %Charpy KV long.Charpy KV Trasv.
     long. min (J min) 
 Wall thickness mm Temperature
  20 20 40 20 20 40  -20 °C-50 °C-20 °C-50 °C
HS620620        
HS690690650770-960720-9301655-27-
HS770770700820-1000750-9601550-27-
HS790790        

circular hollow - sections

OutsideWall thickness                 
DiameterMm                  
mm8.02.62.93.23.64.04.55.05.66.37.18.08.810.012.516.020.030.040.0
21.31.081.201.321.431.571.711.862.01           
33.7  2.202.412.672.933.243.543.884.264.665.07       
42.4  2.823.093.443.794.214.615.085.616.186.797.297.99     
48.3  3.253.563.974.374.865.345.906.537.217.958.759.45     
60.3   4.515.035.556.196.827.558.399.3210.311.212.414.7    
76.1   5.756.447.117.958.779.7410.812.113.414.616.319.623.727.7  
88.9    7.518.389.3710.311.512.814.316.017.419.523.628.834.0  
101.6     9.6310.811.913.314.816.518.520.122.627.533.840.2  
114.3      12.213.515.016.818.821.022.925.731.438.846.562.4 
139.7      15.016.618.520.723.226.028.432.039.248.859.081.2 
168.3       20.122.525.228.231.634.639.048.060.173.1102127
177.8         26.629.933.536.741.451.063.877.8109136
193.7         29.132.736.640.145.355.970.185.7121152
219.1         33.137.141.645.651.663.780.198.2140177
244.5           46.751.257.871.590.2111159202
273.0             64.980.3101125180230
Other outside diameter and wall thickness on request

circular hollow - sections

SizeWall thickness               
mmMm                 
40x402.93.23.64.04.55.05.66.37.18.08.810.011.012.514.216.017.520.0
50x503.313.614.014.394.855.285.786.336.91         
60x604.224.625.145.646.266.857.548.319.1410.0        
70x705.135.626.276.97.678.427.3010.311.412.513.514.915.917.3    
80x80 6.637.408.159.089.9911.112.313.615.016.318.019.421.3    
80x80  8.539.4110.511.612.814.215.817.519.021.122.825.2    
90x90  9.6610.711.913.114.616.218.120.121.824.326.329.1    
100x100   11.913.314.716.318.220.322.624.527.429.733.033.6   
110x110   13.214.716.318.120.222.525.127.330.633.237.041.0   
120x120    16.117.819.922.224.727.630.133.736.640.945.550.1  
140x140     21.023.426.129.232.635.640.043.548.754.460.164.7 
150x150       28.131.435.138.443.147.052.758.965.270.2 
Other outside diameter and wall thickness on request       [Weight in kg/m]

ISMT- UHS structural tubes tolerance web content

TOLERANCES

Tolerances will be as per EN 10297 specifications.

Permissible deviation in external dimensions D, B and H ….±1% With a minimum of ±0.5mm.

Tolerance on wall thickness T …. -10% for Seamless section, local deviation of -12.5% are permissible.

Permissible out-of-roundness 0 ………….2% out-of-roundness is calculated using the following equation:

0(%) = Dmax – DMin    X 100
D

In the case of square USH sections, the wall thickness in the straight edge area must be checked the upper layer of the wall thickness is determined by the maximum weight.

Maximum Permissible deviation of squareness of sides ...± 1°

External Cornor Profile

C1 & C2 = max. 3T (wall thickness) the distance between the intersection of the fl at side and the corner arc and the intersection of the projections of the fl at sides to the corner C1 and C2 shall be measured

The maximum permissible twist V is calculated using the following formula: V =
2mm + 0.5mm/m

Permissible out-of-straightness = 0.2% related to the total section length, i.e.
2mm/m

Maximum mass tolerance per section = ±6%, ±8%.

ISMT - UHS™ Structural Tubes Table related LENGHT AND PERMISSIBLE DEVIATIONS Content

Type of length Available length(mm) Permissible deviation Ordering information re length
Mill length 6000 – 16,000 1) none
Fixed length 2,000 ±500 Required fixed length in mm
  2,000 –0 +10 Required fixed length in mm
  6,000    
  6,000 –0 +15  

 

All the steel grades indicated in this brochure have been specially developed so that they have a low carbon equivalent and are easily weldable using traditional welding procedures (provided generally accepted technical rules are followed). For very thick sections, precautions should be taken to avoid cold cracking. In such cases, pre-heating prior to welding is advisable.

ISMT - UHS™ Structural Tubes Section