S550A
Other Steels
Property Overview
Density-g/cm³
Elastic ModulusUnknown
Tensile Strength650-820MPa
Yield Strength530-550MPa
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
Mechanical
A - Min. elongation Lo = 5,65 √ So (%)
16
KV - Impact energy (J) longitud.,
0° 55
KV - Impact energy (J) longitud.,
-20° 40
ReH - Minimum yield strength (MPa)
530-550
Rm - Tensile strength (MPa)
650-820
Hardness
+A Soft annealed +AC Annealed to achieve spheroidization of the carbides +AR As rolled +AT Solution annealed +C Cold drawn / hard +CR Cold rolled +FP Treated to ferrite-pearlite structure and hardness range +I Isothermal annealing +LC Cold drawn / soft +M Thermo mechanical rolling +N Normalized +NT Normalized and tempered
+P Precipitation hardened +PE Peeled +QA Air quenched and tempered +QL Liquid quenched and tempered +QT Quenched and tempered +S Treated to improve shearability +SH As rolled and turned +SR Cold drawn and stress relieved +T Tempered +TH Treated to hardness range +WW Warm worked +U Untreated
Registered Designations & Aliases
1.8991S550A
Standards
EN 10137-3 EN 10137-3: 1996 Plates and wide flats made of high yield strength structural steels in the quenched and tempered or precipitation hardened conditions. Delivery conditions for precipitation hardened steels