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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.

Iron (Fe) 73.2 to 79.6
Chromium (Cr) 20 to 24
Manganese (Mn) 0.3 to 0.8
Silicon (Si) 0 to 0.5
Aluminum (Al) 0 to 0.5
Copper (Cu) 0 to 0.5
Lanthanum (La) 0.040 to 0.2
Titanium (Ti) 0.030 to 0.2
Phosphorus (P) 0 to 0.050
Carbon (C) 0 to 0.030
Sulfur (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