EN 1.6308 (18MnMoNi5-5) Nickel-Molybdenum Steel
Other Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength610MPa
Yield Strength400MPa
Brinell Hardness180HB
Maximum Service Temperature410°C
Chemical Composition
C
0 to 0.2%
NI
0.5 to 0.8%
MO
0.45 to 0.55%
MN
1.2 to 1.6%
SI
0 to 0.4%
P
0 to 0.025%
S
0 to 0.015%
V
0 to 0.030%
FE
96.4 to 97.9%
Mechanical
A - Min. elongation at fracture (%) longitud., (+QT)
20
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
23 %
Fatigue Strength
320 MPa
Impact Strength: V-Notched Charpy
54 J
KV - Impact energy (J) longitud., (+QT)
+20° 56
+QT
KV - Impact energy (J) transverse, (+QT)
+20° 40
+QT
Poisson's Ratio
0.29
ReH - Minimum yield strength (MPa) (+QT)
400
+QT
Rm - Tensile strength (MPa) (+QT)
550-670
+QT
Shear Modulus
73 GPa
Shear Strength
390 MPa
Tensile Strength: Ultimate (UTS)
610 MPa
Tensile Strength: Yield (Proof)
460 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
180
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
39 W/m-K
Thermal Diffusivity
10 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
18 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
550 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
22 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
2.8 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
22 MJ/kg
Embodied Energy
22 MJ/kg 9.3 x 10 3 BTU/lb
Embodied Water
50 L/kg
Embodied Water
50 L/kg 6.0 gal/lb
Registered Designations & Aliases
1.63081.630818MnMoNi5-518MnMoNi5-5EN 1.6308 (18MnMoNi5-5) Nickel-Molybdenum Steel
Standards
EN 10222-2 EN 10222-2: 2000 Steel forgings for pressure purposes. Ferritic and martensitic steels with specified elevated temperature properties
EN 10222-2 EN 10222-2: Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels with specified elevated temperature properties
EN 10222-2 EN 10222-2: Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels with specified elevated temperature properties Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005