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introduction

Hybox® 355

fully complies with the European Standard for cold formed structural hollow sections, EN10219 S355 J2H and is used in a wide range of construction and mechanical related applications including wind bracing and machinery.

Hybox® TT 355-700

A cold formed structural hollow section with Tight Tolerances (TT). It offers customers consistent shape and ready-to-paint surface finish. The ends of the tubes are clean, safe and free of burrs. Available in a high yield strength up to 700 MPa and goes beyond the European Standard EN 10219, offering half the dimensional tolerances to enable trouble-free, automated processing.

With an excellent surface finish, Hybox TT can help improve manufacturing efficiency, output and end product quality. Hybox TT is a great choice for a range of demanding applications – from hard-working agricultural equipment and cranes to construction and mechanical applications.
 

 

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Hybox TT tubes
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Hybox TT tubes
Overview
Manual
Hybox and Hybox TT
Overview

Hybox 355 - Cold formed structural hollow sections

Key features

  • Excellent quality, made with steel from a high quality production process
  • Minimum strength of 355 MPa
  • Properties suitable for low temperature applications (-20°C)
  • Dimensional consistency and corner radius controlled
  • High levels of formability and, because the steel is fully-killed, excellent weldability
  • Suitable for applications demanding specific properties
  • Suitable for structural applications and fully compliant with design codes
  • Batch-tested to give the properties of the specific delivered material; full test certification supplied
  • Clearly marked as Hybox 355 , with the reassurance of batch traceability
  • Specific technical support available
  • Excellent supply availability through approved stockholders
  • All Hybox 355 material is CE marked and is fully compliant with the Construction Products Directive (CPD)
  • Suitable for galvanising 

 
Hybox TT 355-700 - Cold formed structural hollow sections

Key features

  • Tolerances twice as stringent as EN 10219
  • Enables more efficient and automated manufacturing processes
  • Excellent surface finish ready to paint without shot blasting
  • Safer to handle and store in bundles with clean tube ends
  • Available in in a high yield strength up to 700 MPa
  • Properties suitable for low temperature applications below -20°C
  • Dimensional consistency and corner radius controlled
  • High levels of formability and, because the steel is fully-killed, excellent weldability
  • Specific technical support available by our dedicated customer technical services

 

Properties
Manual
Hybox and Hybox TT
Properties

Mechanical properties

Hybox 355

Yield strength ReH min N/mm2 T≤16mm 355
Tensile strength Rm min N/mm2 T < 3mm 510-680
    3mm ≤ T ≤ 40mm 470-630
Elongation % min L0=5.65√So T ≤ 40mm 20
Impact strength 10mm x 10xx °C -20
    J 40
Carbon equivalent (CEV) max   0.45

Hybox TT 355-700

Grade Min. yield  Tensile  Min.  Mini impact energy KV (J) at test temperature of
strength strength elongation            
ReH Rm A% A% -20°C   -40°C    -50°C  
MPa MPa Long Trans Long Trans Long Trans Long Trans
S355 J2H 355 470 to 630 20 - 27 27 - - - -
S355 K2H 355 470 to 630 20 - 40 40 - - - -
S355 MH 355 450 to 610 22 19 40 20 - - - -
S355 MLH 355 450 to 610 22 19 47 27 31 20 27 16
S420 MH 420 500 to 660 19 17 40 20 - - - -
S420 MLH 420 500 to 660 19 17 47 27 31 20 27 16
S460 MH 460 530 to 720 17 15 40 20 - - - -
S460 MLH 460 530 to 720 17 15 47 27 31 20 27 16
S500 MH 500 580 to 760 15 13 40 20 - - - -
S500 MLH 500 580 to 760 15 13 47 27 31 20 27 16
S550 MH 550 600 - 760 14 12 40 20 - - - -
S550 MLH 550 600 - 760 14 12 47 27 31 20 27 16
S600 MH 600 650 - 820 13 11 40 20 - - - -
S600 MLH 600 650 - 820 13 11 47 27 31 20 27 16
S650 MH 650 700 - 880 12 10 40 20 - - - -
S650 MLH 650 700 - 880 12 10 47 27 31 20 27 16
S700 MH 700 750 - 950 10 8 40 20 - - - -
S700 MLH 700 750 - 950 10 8 47 27 31 20 27 16

 

Chemical composition

Hybox 355

All values are in weight%

C Si Mn P S
0.22 0.55 1.60 0.030 0.030

Hybox TT 355-700

All values are in weight%. All values are maximum unless states otherwise

Grade C Si Mn P S Cr Mo Ni Al Cu Nb Ti V N CEV
                  tot min.            
S355 J2H 0.22 0.55 1.6 0.03 0.03 - - -   - - - - - 0.47
S355 K2H 0.22 0.55 1.6 0.03 0.03 - - -   - - - - - 0.47
S355 MH 0.16 0.5 1.6 0.03 0.025 0.3 0.1 0.5 0.02 0.55 0.09 0.06 0.1 0.015 0.4
S355 MLH 0.16 0.5 1.6 0.025 0.02 0.3 0.1 0.5 0.02 0.55 0.09 0.06 0.1 0.015 0.4
S420 MH 0.16 0.5 1.7 0.03 0.025 0.3 0.2 0.8 0.02 0.55 0.09 0.06 0.12 0.025 0.44
S420 MLH 0.16 0.5 1.7 0.025 0.02 0.3 0.2 0.8 0.02 0.55 0.09 0.06 0.12 0.025 0.44
S460 MH 0.16 0.6 1.7 0.03 0.025 0.3 0.2 0.8 0.02 0.55 0.09 0.06 0.12 0.025 0.46
S460 MLH 0.16 0.6 1.7 0.025 0.02 0.3 0.2 0.8 0.02 0.55 0.09 0.06 0.12 0.025 0.46
S500 MH 0.16 0.6 1.7 0.02 0.02 0.3 0.2 0.8 0.02 0.55 0.09 0.06 0.12 0.025 0.47
S500 MLH 0.16 0.6 1.7 0.02 0.015 0.3 0.2 0.8 0.02 0.55 0.09 0.06 0.12 0.025 0.47
S550 MH 0.16 0.6 1.8 0.02 0.015 0.3 0.5 0.8 0.015 0.55 0.09 0.15 0.2 0.025 0.47
S550 MLH 0.16 0.6 1.8 0.02 0.012 0.3 0.5 0.8 0.015 0.55 0.09 0.15 0.2 0.025 0.47
S600 MH 0.16 0.6 1.9 0.02 0.015 0.3 0.5 0.8 0.015 0.55 0.09 0.22 0.2 0.025 0.47
S600 MLH 0.16 0.6 1.9 0.02 0.012 0.3 0.5 0.8 0.015 0.55 0.09 0.22 0.2 0.025 0.47
S650 MH 0.16 0.6 2 0.02 0.015 0.3 0.5 0.8 0.015 0.55 0.09 0.22 0.2 0.025 0.47
S650 MLH 0.16 0.6 2 0.02 0.012 0.3 0.5 0.8 0.015 0.55 0.09 0.22 0.2 0.025 0.47
S700 MH 0.16 0.6 2.1 0.02 0.015 0.3 0.5 0.8 0.015 0.55 0.09 0.22 0.2 0.025 0.47
S700 MLH 0.16 0.6 2.1 0.02 0.012 0.3 0.5 0.8 0.015 0.55 0.09 0.22 0.2 0.025 0.47

Chemistries with lower C, S, P and Si content are available on request.

Dimensions
Manual
Hybox and Hybox TT
Hybox® 355

Dimensional capability
 

Hybox 355 is available in sizes from 33.7 x 3.0 OD up to and including 508.0 x 16 OD in our circular hollow sections range and from 25 x 25 x 2.0 up to and including 400 x 400 x 12.5 and the equivalent rectangles in our rectangular hollow section range. 

Hybox 355 is supplied with an inspection certificate 3.1 to EN10204. Standard lengths are 7.5 metres and 12.0 metres, with special mill lengths from 6 metres up to 18m available by arrangement.
Further details of specific size and grade combinations can be found in our Hybox downloads section.

Dimensional tolerances

Dimensional tolerances are in accordance with EN10219: Part 2

  Circular Square / Rectangular  
    Side length (mm)  Tolerance
Outside dimension
(D B and H)		  ±1% with a min of ±0.50mm
and a max of ±10mm		 H,B < 100 ±1% with a min
of ±0.5mm
100 ≤ H,B ±0.8%
H,B > 200 ±0.6%
Thickness (T) For D≤406.4mm T ≤ 5mm ± 10%
  T ≤ 5mm ±10% T > 5mm ±0.50mm
  T > 5mm ±0.50mm    
  For D > 406.4mm ±10%
 with a max of ±2mm		    
Out of roundness (O)  2% for D/T < 100, where
D/T ≥ 100 out-of-roundness		 -  
  tolerance to be agreed    
Concavity/Convexity
(independent olerance on		 – Max 0.8% with a
min of 0.5mm		  
outside dimensions)      
Squareness of side – 90º ± 1  
External corner profile – T ≤ 6.0 1.6T to 2.4T
EN10219: Part 2 Table 3   6.0 < T ≤10.0 2.0T to 3.0T
    T > 10.0  2.4T to 3.6T
Twist (V) – 2mm plus 0.5mm/m length  
Straightness  0.20% of total length and
3mm over any 1m length		 0.15% of total length and
3mm over any 1m length		  
Mass (M) ±6% on
individual lengths		 ±6% on individual lengths ±6% on individual lengths  
Length -0 +50mm -0 +50mm -0 +50mm  

1. These dimensional tolerances of the cross sections  meet the standard EN 10219 - part 2.
2. Radius need not be tangential to the sides.

 

Hybox TT 355-700


Dimensional capability

Hybox TT is available in sizes from 50 x 50x 3 up to 250 x 250 x 12.5 in square sections and the equivalent rectangles in our rectangular hollow section range.
Hybox TT is supplied with an inspection certificate 3.1 to EN10204.
Standard lengths are 6m and 12m, with special mill lengths from 6m up to 18m available by arrangement.

Dimensional tolerances

The following dimensional tolerances of the cross sections are twice as stringent as the standard EN 10219 - part 2: unless noted otherwise.

  Circular   Square/Rectangular  
  Diameter (mm) Tolerance Side length (mm)  Tolerance
Outside dimension
(D B and H)		 ±0.5%; with min ±0.5 mm
and max ±10 mm		 H,B < 100 ±1% with a min
of ±0.5mm
100 ≤ H,B ±0.8%
H,B > 200 ±0.6%
Out of roundness (O)  If D/T < 100 0.01 -  
If D/T ≥ 100 To be agreed    
Concavity/Convexity
(independent tolerance
on outside dimensions)		   – Max 0.8% with
a min of 0.5mm		  
Squareness of side   – 90º ± 0.5º  
  Diameter (mm) Tolerance Thickness Tolerance
External corner profile2
EN10219: Part 2 Table 3		     T ≤ 6.0 2T ± 0.2T
(or 1.8T to 2.2T)
    6.0 < T ≤10.0 2.5T ± 0.25T
(or 2.25T to 2.75T)
    T > 10.0  3T ± 0.3T
(or 2.7T to 3.3T)
Mass (M) ±6% on
individual lengths		 ±6% on individual lengths   ±6% on individual lengths  
Length -0 +50mm -0 +50mm   -0 +50mm  
Thickness (T) 1 D ≤ 406.4; T ≤ 5 ± 10% T ≤ 5 ± 10%
D ≤ 406.4; T > 5 ± 0.50mm    
D > 406.4 ± 10% Max ± 2mm T > 5 ± 0.50mm
Twist (V) 1 -   2mm plus 0.5mm/m length
Straightness 1 0.20% of total length
and 3mm over 1m length		 0.15% of total length
and 3mm over 1m length

1. These dimensional tolerances of the cross sections  meet the standard EN 10219 - part 2.
2. Radius need not be tangential to the sides.

 

Download
Manual
Hybox and Hybox TT
Download:

 

 

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