# UNS S44536 Stainless Steel

S44536 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 moderately low tensile strength and a moderately high embodied energy among wrought ferritic stainless steels.

The graph bars on the material properties cards below compare S44536 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 10 ^{6} psi*

Elongation at Break

22 *%*

Fatigue Strength

190 *MPa* 27 *x 10 ^{3} psi*

Poisson's Ratio

0.27

Rockwell B Hardness

79

Shear Modulus

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

Shear Strength

290 *MPa* 42 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

460 *MPa* 67 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

280 *MPa* 41 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

290 *J/g*

Maximum Temperature: Corrosion

560 *°C* 1040 *°F*

Maximum Temperature: Mechanical

990 *°C* 1810 *°F*

Melting Completion (Liquidus)

1440 *°C* 2620 *°F*

Melting Onset (Solidus)

1390 *°C* 2540 *°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)

3.0 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

13 *% relative*

Density

7.7 *g/cm ^{3}* 480

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

41 *MJ/kg* 17 *x 10 ^{3} BTU/lb*

Embodied Water

140 *L/kg* 17 *gal/lb*

## Common Calculations

PREN (Pitting Resistance)

22

Resilience: Ultimate (Unit Rupture Work)

89 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

200 *kJ/m ^{3}*

Stiffness to Weight: Axial

14 *points*

Stiffness to Weight: Bending

25 *points*

Strength to Weight: Axial

17 *points*

Strength to Weight: Bending

17 *points*

Thermal Diffusivity

5.6 *mm ^{2}/s*

Thermal Shock Resistance

16 *points*

## Alloy Composition

Among wrought stainless steels, the composition of S44536 stainless steel is notable for including titanium (Ti) and niobium (Nb). Titanium is used to broadly improve mechanical properties. Niobium is primarily used to improve yield strength, particularly at elevated temperatures.

Fe | 72.8 to 80 | |

Cr | 20 to 23 | |

Mn | 0 to 1.0 | |

Si | 0 to 1.0 | |

Nb | 0.050 to 0.8 | |

Ti | 0 to 0.8 | |

Ni | 0 to 0.5 | |

P | 0 to 0.040 | |

S | 0 to 0.030 | |

C | 0 to 0.015 | |

N | 0 to 0.015 |

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

## Followup Questions

## Similar Alloys

## Further Reading

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

Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005

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