BS EN 10120-2008 pdf download.Steel sheet and strip for welded gas cylinders.
rolling process in which the final deformation process is carried out in a certain temperature range leading to a material cond Won equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing
NOTE The symbo’ foc this delivery condition is N.
4 Classification and designation
4.1 Classification
The steels specified in this European Standard are non-alloy quality steels in accordance with EN 10020.
4.2 Designation
The steel grades are designated with steel names in accordance with EN 10027-1. The corresponding steel
numbers have been allocated in accordance with EN 10027-2.
5 Information to be supplied by the purchaser
5.1 Mandatory information
The following information shall be supplied by the purchaser at the time of enquiry and order:
a) quantity required;
b) type of flat products (sheet or strip);
c) nominal dimensions of the product (length1), width, thickness);
d) number of this European Standard;
e) steel name or number (see Table 1 or 3);
delivery condition (see 6.2 and 7.5);
g) inspection document to be delivered (see 8.1.1).
5.2 Options
A number of options are specified in this European Standard and listed below. If the purchaser does not indicate his wish to implement any of these options the products shall be supplied in accordance with the basic specification (see 5.1).
5.3 Example of ordering
10 t sheets with nominal dimensions of thickness = 4.0 mm, width = 600 mm, length = 1 200 mm, made of the steel grade P265NB (1.0423) as specified in EN 10120, delivered normalized, descaled and oiled, inspection certificate 3.1 in accordance with EN 10204:
10 t sheet — 600x1200x4.0 — EN 10120 — P265NB— normalized and oiled — EN 10204-3.1
lOt sheet — 600xl200x4,0 — EN 10120— 1.0423— normalized and oiled — EN 10204-3.1
6 Manufacturing process
6.1 Steelmaking process
6.1.1 .. The melting and deoxidation process shall be at the aiscretion of the manufacturer with me limitations to 6.1.2 and 6.1.3 and Table 1, unless otherwise agreed at the time of enquiry and ocder.
6.1.2 .. The steel shall be manufactured using the electric arc process or an oxygen process. Other melting processes may be used by agreement at the time of enquiry and order, On request, the purchaser shall be informed of the process used.
6.1.3 The used type of deoxidation shall ensure that the steel has an acceptable degree of resistance to ageing (see Table 1, footnote b).
6.2 Delivery condition
• The delivery condition shall be specified at the time of enquiry and order. Usual delivery conditions are:
a) hot rolled and normalized (N)2);
b) hot rolled (AR).
NOTE The delivery condition “hot rolled and normallzed” is generally used for gas cylinders which are only stress relieved after weldlng The That rolled” delivery condition Is only intended for gas cylinders which are normalized after weld ing
7 Requirements
7.1 Chemical composition
7.3 Weldability
The steels in accordance with this European Standard are weldable using the usual fusion welding processes.
7.4 Tolerances
Tolerances on dimensions and mass shall be in accordance with EN 10051.
7.5 Surface condition
• Depending on the specified surface condition, the sheet or strip shall be supplied either in the rolled condition or in the chemically or mechanically descaled and oiled condition.
External imperfections which do not impair the intended application shall not be the cause of rejection. Only the material involved can be rejected on the basis of external defects.
8 Inspection
8.1 Types of inspection and inspection documents
8.1.1 The compliance with the requirements of the order shall be checked for products in accordance with this European Standard by specific inspection.
• The purchaser shall state the required type of inspection document (3.1 or 3.2) in accordance with
EN 10204.
If an inspection document 3.2 is specified, the purchaser shall notify the manufacturer of the name and address of the organization or person who is to carry out the inspection and produce the inspection document. It shall be agreed which party shall issue the certificate.
8.1.2 The inspection document shall include, in accordance with EN 10168, the following codes and information:BS EN 10120-2008 pdf download.