EN 1.4449 (X3CrNiMo18-12-3) Stainless Steel
Other Steels
Property Overview
Density7.9g/cm³
Elastic Modulus200GPa
Tensile Strength620MPa
Yield Strength220MPa
Brinell Hardness190HB
Maximum Service Temperature960°C
Chemical Composition
C
0 to 0.035%
CR
17 to 18.2%
NI
11.5 to 12.5%
MO
2.3 to 2.8%
MN
0 to 2.0%
SI
0 to 1.0%
N
0 to 0.080%
P
0 to 0.045%
S
0 to 0.015%
CU
0 to 1.0%
FE
62.4 to 69.3%
Mechanical
A - Min. elongation at fracture (%) longitud., (+AT)
45
+AT
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
48 %
Fatigue Strength
240 MPa
Impact Strength: V-Notched Charpy
91 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° 60
+AT
Poisson's Ratio
0.28
R p0.2 0.2% proof strength (MPa) (+AT)
220
+AT
Rm - Tensile strength (MPa) (+AT)
520-720
+AT
Shear Modulus
78 GPa
Shear Strength
440 MPa
Tensile Strength: Ultimate (UTS)
620 MPa
Tensile Strength: Yield (Proof)
250 MPa
Hardness
Brinell Hardness
190
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
410 °C
Maximum Temperature: Mechanical
960 °C
Melting Completion (Liquidus)
1440 °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
2.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.6 % IACS
Calculated
PREN (Pitting Resistance)
27
Resilience: Ultimate (Unit Rupture Work)
240 MJ/m 3
Resilience: Unit (Modulus of Resilience)
160 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
19 % relative
Embodied Carbon
3.9 kg CO 2 /kg material
Embodied Energy
54 MJ/kg
Embodied Energy
54 MJ/kg 23 x 10 3 BTU/lb
Embodied Water
150 L/kg
Embodied Water
150 L/kg 18 gal/lb
Registered Designations & Aliases
1.44491.4449EN 1.4449 (X3CrNiMo18-12-3) Stainless SteelX3CrNiMo18-12-3X3CrNiMo18-12-3
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 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 Metallic Materials: Physical, Mechanical, and Corrosion Properties, Philip A. Schweitzer, 2003 EN 10088-1: Stainless steels - Part 1: List of stainless steels