EN 1.8866 (P355Q) Steel
Other Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength540MPa
Yield Strength355MPa
Brinell Hardness160HB
Maximum Service Temperature410°C
Chemical Composition
C
0 to 0.16%
CR
0 to 0.3%
NI
0 to 0.5%
MO
0 to 0.25%
MN
0 to 1.5%
SI
0 to 0.4%
N
0 to 0.015%
P
0 to 0.025%
S
0 to 0.010%
CU
0 to 0.3%
NB
0 to 0.050%
TI
0 to 0.030%
V
0 to 0.060%
B
0 to 0.0050%
ZR
0 to 0.050%
FE
96.3 to 100%
Mechanical
A - Min. elongation at fracture (%) (+QT)
22
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
25 %
Fatigue Strength
260 MPa
Impact Strength: V-Notched Charpy
67 J
KV - Impact energy (J) transverse, (+QT)
-20° 27
+QT
KV - Impact energy (J) transverse, (+QT)
0° 40
+QT
KV - Impact energy (J) transverse, (+QT)
+20° 60
+QT
Poisson's Ratio
0.29
ReH - Minimum yield strength (MPa) (+QT)
355
+QT
ReH - Minimum yield strength (MPa) (+QT)
335
+QT
ReH - Minimum yield strength (MPa) (+QT)
315
+QT
Rm - Tensile strength (MPa) (+QT)
490-630
+QT
Rm - Tensile strength (MPa) (+QT)
450-590
+QT
Shear Modulus
73 GPa
Shear Strength
350 MPa
Tensile Strength: Ultimate (UTS)
540 MPa
Tensile Strength: Yield (Proof)
350 MPa
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
+A
Brinell Hardness
160
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
410 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
48 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
16 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Other
Nominal thickness (mm):
to 100
Nominal thickness (mm):
100 - 150
Nominal thickness (mm):
to 50
Nominal thickness (mm):
50 - 100
Calculated
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
330 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
19 points
Environmental
Base Metal Price
2.4 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
21 MJ/kg
Embodied Energy
21 MJ/kg 9.1 x 10 3 BTU/lb
Embodied Water
48 L/kg
Embodied Water
48 L/kg 5.7 gal/lb
Registered Designations & Aliases
1.88661.8866EN 1.8866 (P355Q) SteelP355QP355Q
Standards
EN 10028-6 EN 10028-6: 2009 Flat products made of steels for pressure purposes. Weldable fine grain steels, quenched and tempered
EN 10028-6 EN 10028-6: Flat products made of steels for pressure purposes - Part 6: Weldable fine grain steels, quenched and tempered