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Annealed 303 Stainless Steel

Annealed AISI 303 is AISI 303 stainless steel in the annealed condition. The graph bars on the material properties cards below compare annealed AISI 303 to: wrought austenitic 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 28 x 106 psi

Elongation at Break

51 %

Fatigue Strength

230 MPa 33 x 103 psi

Poisson's Ratio

0.28

Reduction in Area

57 %

Shear Modulus

77 GPa 11 x 106 psi

Shear Strength

430 MPa 62 x 103 psi

Tensile Strength: Ultimate (UTS)

600 MPa 87 x 103 psi

Tensile Strength: Yield (Proof)

230 MPa 34 x 103 psi

Thermal Properties

Latent Heat of Fusion

290 J/g

Maximum Temperature: Corrosion

410 °C 780 °F

Maximum Temperature: Mechanical

930 °C 1700 °F

Melting Completion (Liquidus)

1450 °C 2640 °F

Melting Onset (Solidus)

1400 °C 2550 °F

Specific Heat Capacity

480 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

16 W/m-K 9.4 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

2.4 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.8 % IACS

Otherwise Unclassified Properties

Base Metal Price

15 % relative

Calomel Potential

-80 mV

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

3.0 kg CO2/kg material

Embodied Energy

42 MJ/kg 18 x 103 BTU/lb

Embodied Water

140 L/kg 17 gal/lb

Common Calculations

PREN (Pitting Resistance)

18

Resilience: Ultimate (Unit Rupture Work)

240 MJ/m3

Resilience: Unit (Modulus of Resilience)

140 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

21 points

Strength to Weight: Bending

20 points

Thermal Diffusivity

4.4 mm2/s

Thermal Shock Resistance

13 points

Alloy Composition

Iron (Fe)Fe 67.3 to 74.9
Chromium (Cr)Cr 17 to 19
Nickel (Ni)Ni 8.0 to 10
Manganese (Mn)Mn 0 to 2.0
Silicon (Si)Si 0 to 1.0
Sulfur (S)S 0.15 to 0.35
Phosphorus (P)P 0 to 0.2
Carbon (C)C 0 to 0.15

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM A895: Standard Specification for Free-Machining Stainless Steel Plate, Sheet, and Strip

ASTM A473: Standard Specification for Stainless Steel Forgings

ASTM A276: Standard Specification for Stainless Steel Bars and Shapes

ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Corrosion of Austenitic Stainless Steels: Mechanism, Mitigation and Monitoring, H. S. Khatak and B. Raj (editors), 2002

Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984

ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994

Advances in Stainless Steels, Baldev Raj et al. (editors), 2010