EN 1.8828 (P420ML2) Steel
Other Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength580MPa
Yield Strength420MPa
Brinell Hardness170HB
Maximum Service Temperature400°C
Chemical Composition
C
0 to 0.16%
NI
0 to 0.5%
MO
0 to 0.2%
MN
0 to 1.7%
SI
0 to 0.5%
N
0 to 0.020%
P
0 to 0.020%
S
0 to 0.0050%
NB
0 to 0.050%
TI
0 to 0.050%
V
0 to 0.1%
AL
0.020 to 0.040%
FE
96.7 to 99.98%
Mechanical
A - Min. elongation at fracture (%)
19
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
22 %
Fatigue Strength
310 MPa
Impact Strength: V-Notched Charpy
110 J
KV - Impact energy (J) transverse,
-50° 27
KV - Impact energy (J) transverse,
-40° 40
KV - Impact energy (J) transverse,
-20° 60
KV - Impact energy (J) transverse,
0° 80
Poisson's Ratio
0.29
ReH - Minimum yield strength (MPa)
420
ReH - Minimum yield strength (MPa)
400
ReH - Minimum yield strength (MPa)
390
Rm - Tensile strength (MPa)
500-660
Shear Modulus
73 GPa
Shear Strength
370 MPa
Tensile Strength: Ultimate (UTS)
580 MPa
Tensile Strength: Yield (Proof)
440 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
170
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
49 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
17 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Other
Nominal thickness (mm):
to 16
Nominal thickness (mm):
16 - 40
Nominal thickness (mm):
40 - 63
Calculated
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
530 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 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
48 L/kg
Embodied Water
48 L/kg 5.7 gal/lb
Registered Designations & Aliases
1.88281.8828EN 1.8828 (P420ML2) SteelP420ML2P420ML2
Standards
EN 10028-5 EN 10028-5: 2009 Flat products made of steels for pressure purposes. Weldable fine grain steels, thermomechanically rolled
EN 10028-5 EN 10028-5: Flat products made of steels for pressure purposes - Part 5: Weldable fine grain steels, thermomechanically rolled
EN 10028-5 EN 10028-5: Flat products made of steels for pressure purposes - Part 5: Weldable fine grain steels, thermomechanically rolled Welding Metallurgy, 2nd ed., Sindo Kou, 2003 Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005