EN 1.4912 (X7CrNiNb18-10) Stainless Steel
Other Steels
Property Overview
Density7.8g/cm³
Elastic Modulus200GPa
Tensile Strength610MPa
Yield Strength205MPa
Brinell Hardness180HB
Maximum Service Temperature940°C
Chemical Composition
C
0.040 to 0.1%
CR
17 to 19%
NI
9.0 to 12%
MN
0 to 2.0%
SI
0 to 1.0%
P
0 to 0.045%
S
0 to 0.015%
NB
0.4 to 1.2%
FE
64.6 to 73.6%
Mechanical
A - Min. elongation at fracture (%) longitud., (+AT)
40
+AT
A - Min. elongation at fracture (%) transverse, (+AT)
30
+AT
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
40 %
Fatigue Strength
200 MPa
Impact Strength: V-Notched Charpy
90 J
KV - Impact energy (J) longitud., (+AT)
+20° 100
+AT
KV - Impact energy (J) transverse, (+AT)
+20° 60
+AT
KV - Impact energy (J) transverse, (+AT)
-196° 40
+AT
Poisson's Ratio
0.28
R p0.2 0.2% proof strength (MPa) (+AT)
205
+AT
Rm - Tensile strength (MPa) (+AT)
510-710
+AT
Shear Modulus
77 GPa
Shear Strength
420 MPa
Tensile Strength: Ultimate (UTS)
610 MPa
Tensile Strength: Yield (Proof)
230 MPa
Hardness
Brinell Hardness
180
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
520 °C
Maximum Temperature: Mechanical
940 °C
Melting Completion (Liquidus)
1430 °C
Melting Onset (Solidus)
1390 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
16 W/m-K
Thermal Diffusivity
4.2 mm 2 /s
Thermal Expansion
16 µm/m-K
Thermal Shock Resistance
14 points
Electrical
Electrical Conductivity: Equal Volume
2.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.7 % IACS
Calculated
PREN (Pitting Resistance)
18
Resilience: Ultimate (Unit Rupture Work)
190 MJ/m 3
Resilience: Unit (Modulus of Resilience)
130 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
22 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
20 % relative
Embodied Carbon
3.8 kg CO 2 /kg material
Embodied Energy
55 MJ/kg
Embodied Energy
55 MJ/kg 24 x 10 3 BTU/lb
Embodied Water
140 L/kg
Embodied Water
140 L/kg 17 gal/lb
Registered Designations & Aliases
1.49121.4912EN 1.4912 (X7CrNiNb18-10) Stainless SteelX7CrNiNb18-10X7CrNiNb18-10
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 10222-5 EN 10222-5: 2000 Steel forgings for pressure purposes. Martensitic, austenitic and austenitic-ferritic stainless steels
EN 10222-5 EN 10222-5: Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels
EN 10222-5 EN 10222-5: Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels EN 10088-1: Stainless steels - Part 1: List of stainless steels