EN 1.4988 (X8CrNiMoVNb16-13) Stainless Steel
Other Steels
Property Overview
Density7.9g/cm³
Elastic Modulus200GPa
Tensile Strength640MPa
Yield Strength255MPa
Brinell Hardness190HB
Maximum Service Temperature920°C
Chemical Composition
C
0.040 to 0.1%
CR
15.5 to 17.5%
NI
12.5 to 14.5%
MO
1.1 to 1.5%
MN
0 to 1.5%
SI
0.3 to 0.6%
N
0.060 to 0.14%
P
0 to 0.035%
S
0 to 0.015%
NB
0.4 to 1.2%
V
0.6 to 0.85%
FE
62.1 to 69.5%
Mechanical
A - Min. elongation at fracture (%) (+P)
30
+P
A - Min. elongation at fracture (%) longitud., (+AT)
30
+AT
A - Min. elongation at fracture (%) transverse, (+AT)
20
+AT
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
34 %
Fatigue Strength
230 MPa
KV - Impact energy (J) longitud., (+AT)
+20° 60
+AT
KV - Impact energy (J) transverse, (+AT)
+20° 40
+AT
Poisson's Ratio
0.28
R p0.2 0.2% proof strength (MPa) (+AT)
255
+AT
R p0.2 0.2% proof strength (MPa) (+P)
255
+P
Rm - Tensile strength (MPa) (+AT)
540-740
+AT
Rm - Tensile strength (MPa) (+P)
540-740
+P
Shear Modulus
77 GPa
Shear Strength
430 MPa
Tensile Strength: Ultimate (UTS)
640 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
190
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
520 °C
Maximum Temperature: Mechanical
920 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1400 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
15 W/m-K
Thermal Diffusivity
4.0 mm 2 /s
Thermal Expansion
16 µm/m-K
Thermal Shock Resistance
14 points
Electrical
Electrical Conductivity: Equal Volume
2.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.5 % IACS
Calculated
PREN (Pitting Resistance)
22
Resilience: Ultimate (Unit Rupture Work)
180 MJ/m 3
Resilience: Unit (Modulus of Resilience)
210 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
23 points
Strength to Weight: Bending
21 points
Environmental
Base Metal Price
23 % relative
Embodied Carbon
6.0 kg CO 2 /kg material
Embodied Energy
89 MJ/kg
Embodied Energy
89 MJ/kg 38 x 10 3 BTU/lb
Embodied Water
150 L/kg
Embodied Water
150 L/kg 18 gal/lb
Registered Designations & Aliases
1.49881.4988EN 1.4988 (X8CrNiMoVNb16-13) Stainless SteelX8CrNiMoVNb16-13X8CrNiMoVNb16-13
Standards
EN 10088-1 EN 10088-1: 2005 Stainless steels. List of stainless steels
EN 10088-1 EN 10088-1: Stainless steels - Part 1: List of stainless steels
EN 10216-5 EN 10216-5: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Stainless steel tubes
EN 10302 EN 10302: 2008 Creep resisting steels, nickel and cobalt alloys
EN 10302 EN 10302: Creep resisting steels, nickel and cobalt alloys
EN 10302 EN 10302: Creep resisting steels, nickel and cobalt alloys Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005 EN 10088-1: Stainless steels - Part 1: List of stainless steels