UNS S44535 Stainless Steel
S44535 stainless steel is a ferritic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. It has a fairly high ductility and a moderately low tensile strength among wrought ferritic stainless steels.
The graph bars on the material properties cards below compare S44535 stainless steel to: wrought ferritic stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
170
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
28 %
Fatigue Strength
210 MPa 30 x 103 psi
Poisson's Ratio
0.27
Rockwell B Hardness
77
Shear Modulus
78 GPa 11 x 106 psi
Shear Strength
290 MPa 42 x 103 psi
Tensile Strength: Ultimate (UTS)
450 MPa 65 x 103 psi
Tensile Strength: Yield (Proof)
290 MPa 41 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
450 °C 850 °F
Maximum Temperature: Mechanical
1000 °C 1840 °F
Melting Completion (Liquidus)
1430 °C 2610 °F
Melting Onset (Solidus)
1390 °C 2530 °F
Specific Heat Capacity
480 J/kg-K 0.12 BTU/lb-°F
Thermal Conductivity
21 W/m-K 12 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.1 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
2.4 kg CO2/kg material
Embodied Energy
34 MJ/kg 15 x 103 BTU/lb
Embodied Water
140 L/kg 17 gal/lb
Common Calculations
PREN (Pitting Resistance)
22
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m3
Resilience: Unit (Modulus of Resilience)
200 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
17 points
Thermal Diffusivity
5.6 mm2/s
Thermal Shock Resistance
15 points
Alloy Composition
Among wrought stainless steels, the composition of S44535 stainless steel is notable for including lanthanum (La) and aluminum (Al). Lanthanum is used to get better mechanical properties from heat treatment. Aluminum is used to improve oxidation resistance. It can also enhance the effects of heat treatment.
| Fe | 73.2 to 79.6 | |
| Cr | 20 to 24 | |
| Mn | 0.3 to 0.8 | |
| Si | 0 to 0.5 | |
| Al | 0 to 0.5 | |
| Cu | 0 to 0.5 | |
| La | 0.040 to 0.2 | |
| Ti | 0.030 to 0.2 | |
| P | 0 to 0.050 | |
| C | 0 to 0.030 | |
| S | 0 to 0.020 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016
ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
Corrosion of Stainless Steels, A. John Sedriks, 1996
ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015