Dimension
Property | Value |
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Dimensions | Please feel free to check the figure on the right side of the material page for more details. |
Mechanical
Property | Value | Comment |
---|---|---|
Elongation | 20 % Show Supplier Material materials with Elongation of 20 % | min. | for thickness 1-2 mm | A80 |
Tensile strength | 600 MPa Show Supplier Material materials with Tensile strength of 600 MPa | min. | for thickness 1-2 mm |
Yield strength | 34 MPa Show Supplier Material materials with Yield strength of 34 MPa | min. | for thickness 1-2 mm |
Chemical properties
Property | Value | Comment |
---|---|---|
Aluminium | 0.015 % Show Supplier Material materials with Aluminium of 0.015 % | min. |
Carbon | 0.15 % Show Supplier Material materials with Carbon of 0.15 % | max. |
Manganese | 2.5 % Show Supplier Material materials with Manganese of 2.5 % | max. |
Phosphorus | 0.04 % Show Supplier Material materials with Phosphorus of 0.04 % | max. |
Silicon | 0.015 % Show Supplier Material materials with Silicon of 0.015 % | max. |
Sulfur | 0.75 % Show Supplier Material materials with Sulfur of 0.75 % | max. |
Technological properties
Property | ||
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Application areas | This grade is specifically intended for use in the production of two-piece, refillable gas cylinders according to EN 14140 and EN 14638. Top and bottom shells are deep drawn, welded (GMAW, MAG) and non-heat treated. | |
Chemical composition | Notes: 1. The sum of the percentages by mass of the two elements chromium and molybdenum shall not exceed 1.0%. 2. The sum of the percentages by mass of the two elements niobium and titanium shall not exceed 0.150%. | |
Other | Please contact us for the regulatory-compliant certificate EN 10204-3.1 issued for this steel grade. | |
Processing methods | This dual-phase steel offers an excellent combination of strength and drawability as a result of its good ductility and strain-hardening capacity from the onset of deformation, which ensures homogeneous strain-redistribution and reduces local thinning. For example, yield strength can be increased by about 120 MPa after 2% plastic strain in uniaxial tension (a phenomenon known as work-hardening or WH2). Yield strength can be further increased through bake-hardening (BH2) after paint curing. Dual-phase steel can be drawn on conventional tools following the usual processing steps for this application, provided the settings are properly adjusted. For example, drawing pressure should be increased by approximately 20% compared with steel grade P355NB EN 10120. It should be noted that this dual-phase grade is more sensitive to wrinkling and the “springback phenomenon” than the conventional hot rolled steels used for gas cylinders. For more information about the forming of dual-phase steel, please contact us for further details and technical assistance. | |
Welding | All the usual arc welding methods for this application (MAG, GMAW, SAW) can be used. Gas cylinders remain in “as welded” condition. In joggle and bung joint MAG (Metal Active Gas) arc welding, maximum hardness in the fusion zone must not exceed 300 HV for dual-phase 600, regardless of the parameters. However, in areas of high structural stress, heat input should be limited. Generally recommended welding consumables: Based on many years’ practical experience in characterising its products, ArcelorMittal can provide technical assistance in optimising the welding parameters for this application. |