UNS S44660 (26-3-3) Stainless Steel
Ferritic Stainless Steels
Property Overview
Density7.7g/cm³
Elastic Modulus210GPa
Tensile Strength660MPa
Yield Strength510MPa
Brinell Hardness210HB
Maximum Service Temperature1100°C
Chemical Composition
C
0 to 0.030%
CR
25 to 28%
NI
1.0 to 3.5%
MO
3.0 to 4.0%
MN
0 to 1.0%
SI
0 to 1.0%
N
0 to 0.040%
P
0 to 0.040%
S
0 to 0.030%
NB
0.2 to 1.0%
TI
0.2 to 1.0%
FE
60.4 to 71%
Mechanical
Elastic (Young's, Tensile) Modulus
210 GPa
Elongation at Break
20 %
Fatigue Strength
330 MPa
Poisson's Ratio
0.27
Shear Modulus
81 GPa
Shear Strength
410 MPa
Tensile Strength: Ultimate (UTS)
660 MPa
Tensile Strength: Yield (Proof)
510 MPa
Hardness
Brinell Hardness
210
Rockwell B Hardness
88
Physical
Density
7.7 g/cm 3
Thermal
Latent Heat of Fusion
300 J/g
Maximum Temperature: Corrosion
640 °C
Maximum Temperature: Mechanical
1100 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
17 W/m-K
Thermal Diffusivity
4.5 mm 2 /s
Thermal Expansion
11 µm/m-K
Thermal Shock Resistance
21 points
Electrical
Electrical Conductivity: Equal Volume
2.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.9 % IACS
Calculated
PREN (Pitting Resistance)
38
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
640 kJ/m 3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Environmental
Base Metal Price
21 % relative
Embodied Carbon
4.3 kg CO 2 /kg material
Embodied Energy
61 MJ/kg
Embodied Energy
61 MJ/kg 26 x 10 3 BTU/lb
Embodied Water
180 L/kg
Embodied Water
180 L/kg 21 gal/lb
Registered Designations & Aliases
26-3-3S44660UNS S44660 (26-3-3) Stainless Steel
Standards
ASTM A240 ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
ASTM A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels