Finland · SFS

E355

SFS EN 10305-2

Chemical composition

wt% · log scale
0.010.1110Al0.02C0.22Mn1.6P0.025S0.025Si0.55
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥512 MPaTensile strength Rm≥640 MPaElongation A≥4 %welded steel tube +CYield strength Rp0.2≥413 MPaTensile strength Rm≥590 MPaElongation A≥6 %welded steel tube +LCYield strength Rp0.2≥355 MPaTensile strength Rm490–630 MPaElongation A≥22 %welded steel tube +NYield strength Rp0.2≥435 MPaTensile strength Rm≥590 MPaElongation A≥10 %welded steel tube +SR

Fatigue S-N curve

stress vs. cycles (log)
240241241242242110Cycles
  • 1.Plates; 20 mm thick; Weld metal, stress-relieved; Total strain control; R=-1; T: 23°C; Cylindrical; Diameter [mm]: 10; Gauge length [mm]: 12.5

Chemical composition

ElementminmaxSimilarRemarks
Al0.02Al total
C0.22
Mn1.6
Nb+Ti+VAddition of Nb
P0.025
S0.025
Si0.55

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
welded steel tube +C≥512 Reh >= 0.8 Rm≥640≥4 Elongation after fracture
welded steel tube +LC≥413 Reh >= 0.7 Rm≥590≥6 Elongation after fracture
welded steel tube +N≥355 Upper Yield Stress490–630≥22 Elongation after fracture
welded steel tube +SR≥435 Upper Yield Stress≥590≥10 Elongation after fracture
welded steel tube +A≥225 Reh >= 0.5 Rm≥450≥22 Elongation after fracture

Fatigue

Test conditions
ItemDetail
ProductPlates; 20 mm thick; Weld metal stress-relieved
ExperimentTotal strain control; R=-1; T: 23°C
SpecimenCylindrical; Diameter [mm]: 10; Gauge length [mm]: 12.5
Monotonic
PropertyValue
Elastic modulus (GPa)204.0
Yield strength (MPa)610.0
Tensile strength (MPa)708.0
Elongation (%)16.0
Reduction of area (%)72.0
Strength coefficient (MPa)750.0
Strain-hardening exponent0.034
Hardness (HV)235.0
Strain life
No.Cyclic yield strength (MPa)Cyclic strain-hardening exponent n′Cyclic strength coefficient K′ (MPa)Fatigue strength coefficient σ′f (MPa)Fatigue strength exponent bFatigue ductility coefficient ε′fFatigue ductility exponent c
13970.14809971002-0.09830.9988-0.6594
Stress life
No.SpecimenStress (MPa)Cycles
1Cylindrical; Diameter [mm]: 10; Gauge length [mm]: 12.52412E6