# Quenched and Tempered (+QT800) 1.4935 Stainless Steel

EN 1.4935 +QT800 steel is EN 1.4935 stainless steel in the quenched and tempered condition. The graph bars on the material properties cards below compare EN 1.4935 +QT800 steel to: wrought martensitic 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

Elastic (Young's, Tensile) Modulus

200 *GPa* 28 *x 10 ^{6} psi*

Elongation at Break

16 *%*

Fatigue Strength

400 *MPa* 58 *x 10 ^{3} psi*

Poisson's Ratio

0.28

Shear Modulus

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

Shear Strength

540 *MPa* 78 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

880 *MPa* 130 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

670 *MPa* 97 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

270 *J/g*

Maximum Temperature: Corrosion

380 *°C* 720 *°F*

Maximum Temperature: Mechanical

740 *°C* 1360 *°F*

Melting Completion (Liquidus)

1460 *°C* 2670 *°F*

Melting Onset (Solidus)

1420 *°C* 2590 *°F*

Specific Heat Capacity

470 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

24 *W/m-K* 14 *BTU/h-ft-°F*

Thermal Expansion

11 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

2.9 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

3.3 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

9.0 *% relative*

Density

7.8 *g/cm ^{3}* 490

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

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

Embodied Water

100 *L/kg* 12 *gal/lb*

## Common Calculations

PREN (Pitting Resistance)

16

Resilience: Ultimate (Unit Rupture Work)

130 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

1160 *kJ/m ^{3}*

Stiffness to Weight: Axial

14 *points*

Stiffness to Weight: Bending

25 *points*

Strength to Weight: Axial

31 *points*

Strength to Weight: Bending

26 *points*

Thermal Diffusivity

6.5 *mm ^{2}/s*

Thermal Shock Resistance

30 *points*

## Alloy Composition

Fe | 83 to 86.7 | |

Cr | 11 to 12.5 | |

Mo | 0.8 to 1.2 | |

Mn | 0.3 to 0.8 | |

Ni | 0.3 to 0.8 | |

W | 0.4 to 0.6 | |

Si | 0.1 to 0.5 | |

V | 0.2 to 0.35 | |

C | 0.17 to 0.24 | |

P | 0 to 0.025 | |

S | 0 to 0.015 |

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

## Followup Questions

## Further Reading

EN 10302: Creep resisting steels, nickel and cobalt alloys

Creep-Resistant Steels, Fujio Abe et al. (editors), 2008

EN 10088-1: Stainless steels - Part 1: List of stainless steels

Corrosion of Stainless Steels, A. John Sedriks, 1996

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