EN 1.0452 (P255QL) Non-Alloy Steel
Carbon & Non-Alloy Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength430MPa
Yield Strength255MPa
Brinell Hardness120HB
Maximum Service Temperature400°C
Chemical Composition
C
0 to 0.17%
CR
0 to 0.3%
NI
0 to 0.3%
MO
0 to 0.080%
MN
0.4 to 1.2%
SI
0 to 0.35%
P
0 to 0.025%
S
0 to 0.010%
CU
0 to 0.3%
NB
0 to 0.010%
TI
0 to 0.040%
V
0 to 0.020%
AL
0.020 to 0.060%
FE
97.1 to 99.58%
Mechanical
A - Min. elongation at fracture (%) longitud., (+QT)
23
+QT
A - Min. elongation at fracture (%) transverse, (+QT)
21
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
25 %
Fatigue Strength
210 MPa
Impact Strength: V-Notched Charpy
51 J
KV - Impact energy (J) longitud., (+QT)
-50° 40
+QT
KV - Impact energy (J) longitud., (+QT)
-40° 40-45
+QT
KV - Impact energy (J) longitud., (+QT)
-20° 45-50
+QT
KV - Impact energy (J) longitud., (+QT)
+20° 55-60
+QT
KV - Impact energy (J) transverse, (+QT)
-50° 27
+QT
KV - Impact energy (J) transverse, (+QT)
-40° 27-30
+QT
KV - Impact energy (J) transverse, (+QT)
-20° 30-35
+QT
KV - Impact energy (J) transverse, (+QT)
+20° 35-40
+QT
Poisson's Ratio
0.29
R p0.2 0.2% proof strength (MPa) (+QT)
255
+QT
Rm - Tensile strength (MPa) (+QT)
360-490
+QT
Shear Modulus
73 GPa
Shear Strength
270 MPa
Tensile Strength: Ultimate (UTS)
430 MPa
Tensile Strength: Yield (Proof)
290 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
120
Physical
Density
7.9 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
48 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
13 points
Electrical
Electrical Conductivity: Equal Volume
7.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.3 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
94 MJ/m 3
Resilience: Unit (Modulus of Resilience)
220 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
15 points
Strength to Weight: Bending
16 points
Environmental
Base Metal Price
2.1 % relative
Embodied Carbon
1.5 kg CO 2 /kg material
Embodied Energy
19 MJ/kg
Embodied Energy
19 MJ/kg 8.3 x 10 3 BTU/lb
Embodied Water
48 L/kg
Embodied Water
48 L/kg 5.7 gal/lb
Registered Designations & Aliases
1.04521.0452EN 1.0452 (P255QL) Non-Alloy SteelP255QLP255QL
Standards
EN 10216-4 EN 10216-4: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified low temperature properties
EN 10216-4 EN 10216-4: Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties
EN 10216-4 EN 10216-4: Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 4: Non-alloy and alloy steel tubes with specified low temperature properties Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011