S550QL1

 
    Grade :  S550QL1
    Number:  1.8986
    Standard:  EN 10025 - 6 : 2004   Technical delivery conditions for flat Products of high yield strength structural steels in the quenched and tempered condition
    Classification:  High yield strength structural steels in the quenched and tempered condition

Chemical composition % of the ladle analysis   of grade   S550QL1 (1.8986)
Nominal thickness =< 50(mm) CEV max = 0.65
Nominal thickness from 50 to 100 (mm) CEV max = 0.77
Depending on the thickness of the product and the manufacturing conditions, the manufacturer may add to the steel one or several alloying elements up to the maximum values given in order to obtain the specified properties
Nb, Ti, V, Zr: There shall be at least 0.015% of a grain-refining element present. AL is also one of these elements. The minimum content of 0.015% applies to soluble aluminium, this value is regarded as attained if the total aluminium content is at least 0.018%; in case of dispute the soluble aluminium content shall be determined

 
C  Si  Mn  Ni P S Cr Mo V N Nb Ti Cu Zr B CEV 
max   0.2 max   0.8 max   1.7 max   2 max   0.02 max   0.01 max   1.5 max   0.7 max   0.12 max   0.015 max   0.06 max   0.05 max   0.5 max   0.15 max   0.005 max   0.83

Mechanical properties of grade   S550QL1 (1.8986)
 
Nominal thickness (mm) 3 - 50 50 - 100 100 - 150
   
ReH - Minimum yield strength (MPa) 550 530 490

 
Nominal thickness (mm) 3 - 50 50 - 100 100 - 150
   
Rm -Tensile strength (MPa) 640-820 640-820 590-770

 
Nominal thickness (mm) - 
   
A - Minimum elongation Lo = 5,65 √ So (%) 16.

 
Temperature -60 -40 -20 0
 
Notch impact test. Min. absorbed energy 30 40 50 60

Equivalent grades of grade   S550QL1 (1.8986)
Germany
DIN,WNr
EStE550V

 
Product description:
Step Shaft S550QL1   Tube S550QL1   Pie-shaped S550QL1   Ring S550QL1    Module Large valves of the main S550QL1    Other Profiled forgings S550QL1

Special Steel classification:

Stainless steel, Hi-Steel HSLA-80, mould steel,  Heat resistant steel, Tool steel, Ball bearing steel,Spring steel,  Alloy steel,  Construction steel,  Die steel, High-speed steel,  angles, flanges, tube sheet, tee, welded pipes, seamless tubes

Standard:
Chinese GB, Japanese JIS, US ASTM, UK BS, EU DIN standards and so on.