# UNS S32003 Stainless Steel

S32003 stainless steel is a duplex stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. The graph bars on the material properties cards below compare S32003 stainless steel to: wrought duplex 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

250

Elastic (Young's, Tensile) Modulus

200 *GPa* 29 *x 10 ^{6} psi*

Elongation at Break

28 *%*

Fatigue Strength

370 *MPa* 54 *x 10 ^{3} psi*

Poisson's Ratio

0.27

Rockwell C Hardness

27

Shear Modulus

79 *GPa* 11 *x 10 ^{6} psi*

Shear Strength

480 *MPa* 69 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

730 *MPa* 110 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

510 *MPa* 74 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

290 *J/g*

Maximum Temperature: Corrosion

430 *°C* 800 *°F*

Maximum Temperature: Mechanical

1010 *°C* 1850 *°F*

Melting Completion (Liquidus)

1440 *°C* 2620 *°F*

Melting Onset (Solidus)

1400 *°C* 2540 *°F*

Specific Heat Capacity

480 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

15 *W/m-K* 8.5 *BTU/h-ft-°F*

Thermal Expansion

13 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

2.2 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

2.5 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

14 *% relative*

Density

7.8 *g/cm ^{3}* 480

*lb/ft*

^{3}Embodied Carbon

3.0 *kg CO _{2}/kg material*

Embodied Energy

42 *MJ/kg* 18 *x 10 ^{3} BTU/lb*

Embodied Water

150 *L/kg* 18 *gal/lb*

## Common Calculations

PREN (Pitting Resistance)

29

Resilience: Ultimate (Unit Rupture Work)

180 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

660 *kJ/m ^{3}*

Stiffness to Weight: Axial

14 *points*

Stiffness to Weight: Bending

25 *points*

Strength to Weight: Axial

26 *points*

Strength to Weight: Bending

23 *points*

Thermal Diffusivity

4.0 *mm ^{2}/s*

Thermal Shock Resistance

21 *points*

## Alloy Composition

Among wrought stainless steels, the composition of S32003 stainless steel is notable for containing a comparatively high amount of chromium (Cr). Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.

Fe | 68.2 to 75.9 | |

Cr | 19.5 to 22.5 | |

Ni | 3.0 to 4.0 | |

Mo | 1.5 to 2.0 | |

Mn | 0 to 2.0 | |

Si | 0 to 1.0 | |

N | 0.14 to 0.2 | |

C | 0 to 0.030 | |

P | 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

Duplex Stainless Steels, Iris Alvarez-Armas and Suzanne Degallaix-Moreuil (editors), 2009

Duplex Stainless Steels: Microstructure, Properties and Applications, Robert N. Gunn (editor), 1997

ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

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