EN 1.0571 (P355QH1) Non-Alloy Steel
Carbon & Non-Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength550MPa
Yield Strength310MPa
Brinell Hardness160HB
Maximum Service Temperature400°C
Chemical Composition
C
0 to 0.2%
CR
0 to 0.3%
NI
0 to 0.3%
MO
0 to 0.080%
MN
0.9 to 1.7%
SI
0.1 to 0.5%
N
0 to 0.020%
P
0 to 0.025%
S
0 to 0.015%
CU
0 to 0.2%
NB
0 to 0.050%
V
0 to 0.1%
AL
0 to 0.060%
FE
96.5 to 99%
Mechanical
A - Min. elongation at fracture (%) longitud.,
21-23
A - Min. elongation at fracture (%) transverse,
19-21
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
23 %
Fatigue Strength
220 MPa
KV - Impact energy (J) longitud., (+QT)
+20° 63
+QT
KV - Impact energy (J) longitud., (+QT)
0° 55
+QT
KV - Impact energy (J) longitud., (+QT)
-20° 47
+QT
KV - Impact energy (J) longitud., (+QT)
-40° 34
+QT
KV - Impact energy (J) transverse, (+QT)
+20° 40
+QT
KV - Impact energy (J) transverse, (+QT)
0° 34
+QT
KV - Impact energy (J) transverse, (+QT)
-20° 27
+QT
Poisson's Ratio
0.29
ReH - Minimum yield strength (MPa)
275-355
Rm - Tensile strength (MPa)
470-630
Shear Modulus
73 GPa
Shear Strength
350 MPa
Tensile Strength: Ultimate (UTS)
550 MPa
Tensile Strength: Yield (Proof)
310 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
7.8 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
400 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
52 W/m-K
Thermal Diffusivity
14 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
17 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
260 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
2.3 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
21 MJ/kg
Embodied Energy
21 MJ/kg 9.2 x 10 3 BTU/lb
Embodied Water
49 L/kg
Embodied Water
49 L/kg 5.9 gal/lb
Registered Designations & Aliases
1.05711.0571EN 1.0571 (P355QH1) Non-Alloy SteelP355QH1P355QH1
Standards
EN 10222-4 EN 10222-4: 1999 Steel forgings for pressure purposes. Weldable fine-grain steels with high proof strength
EN 10222-4 EN 10222-4: Steel forgings for pressure purposes - Part 4: Weldable fine-grain steels with high proof strength