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BS EN 10210 for Hot Finished Structural Hollow Sections

Date:2017-08-18    keywords:BS EN 10210 for Hot Finished Structural Hollow Sections
BS EN 10210 for Hot finished structural hollow sections of non-alloy and fine grain steels.

This part of this European Standard specifies technical delivery conditions for hot finished hollow sections of circular, square, rectangular or elliptical forms and applies to hollow sections formed hot, with or without subsequent heat treatment, or formed cold with subsequent heat treatment to obtain

equivalent metallurgical conditions to those obtained in the hot formed product. 

Chemical Composition for Hot Finished Circular Hollow Section

Chemical composition – ladle analysis

Hot Finished Circular Hollow Section

Specification

EN10210 S355J2H Part 1: 2006

% max

Carbon

0.22

Silicon

0.55

Manganese

1.60

Sulphur

0.030

Phosphorus

0.030

Carbon equivalent (CEV) mat T≤16mm

0.45

Type of deoxidation

Fully killed steel


Mechanical Properties for Hot Finished Circular Hollow Section

Specification

EN10210 S355J2H Part 1: 2006

Tensile Strength Rm N/mm2: 3 ≤ T ≤ 100mm

470 – 630

Yield Strength ReH Min, N/mm2: T ≤ 16mm

355

Min Elongation % T ≤ 40mm on gauge length 5.65. √S0

22

Impact properties Minimum Ave energy (J) at -20°C

27


Dimensional tolerances EN10210: 2006 Part 2

Square/Rectangular

Circular/Ovals

Outside dimension (D B and H)

±1% with a min of ±0.5mm

Circular ±1% with a min of ±0.5mm and

maximum of ±10mm

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)

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

Max 0.2% of total length & 3mm over every 1m length

Maximum 0.2% of the total length & 3mm over every 1m length. (The permitted tolerance is twice the value

for H<250)

Length

+150mm/-0mm

+150mm/-0mm

* Excludes RHS 250 x 200, which is 3T max at each corner in line with EN10210

EN10210 CHS-Circular hollow sections – length and tolerances

Outside Diameter

Welded

mm

Thickness

mm

Standard mill

lengths m

Special mill

lengths m*

Tolerance

mm

21.3 – 42.4

All

6.0, 6.4, 7.5

5.4 – 7.5

+150-0

48.3

All

6.0, 6.4, 7.5 & 10.0

5.4 – 14.6

+150-0

60.3 – 114.3

All

6.0, 6.4, 7.5 & 10.0

5.0 – 14.6

+150-0

139.7

All

7.5 & 10.0

6.0 – 14.5

+150-0

168.3 – 193.7

All

7.5, 10.0 & 12.0

6.0 – 14.6

+150-0

219.1 – 508.0

All

10.0 & 12.0

6.0 – 14.6

+150-0


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