# ASTM A203 Grade F Nickel Steel

ASTM A203 grade F is a type of ASTM A203 steel. Cited properties are appropriate for the normalized condition. It has the highest strength and lowest ductility compared to the other variants of ASTM A203 steel.

The graph bars on the material properties cards below compare ASTM A203 grade F to: wrought alloy steels in the same category (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

180

Elastic (Young's, Tensile) Modulus

190 *GPa* 27 *x 10 ^{6} psi*

Elongation at Break

22 *%*

Fatigue Strength

280 *MPa* 40 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

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

Shear Strength

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

Tensile Strength: Ultimate (UTS)

590 *MPa* 85 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

390 *MPa* 57 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

250 *J/g*

Maximum Temperature: Mechanical

410 *°C* 770 *°F*

Melting Completion (Liquidus)

1460 *°C* 2660 *°F*

Melting Onset (Solidus)

1420 *°C* 2580 *°F*

Specific Heat Capacity

470 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

52 *W/m-K* 30 *BTU/h-ft-°F*

Thermal Expansion

13 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

7.6 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

8.7 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

4.0 *% relative*

Density

7.9 *g/cm ^{3}* 490

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

23 *MJ/kg* 9.8 *x 10 ^{3} BTU/lb*

Embodied Water

52 *L/kg* 6.2 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

120 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

410 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

24 *points*

Strength to Weight: Axial

21 *points*

Strength to Weight: Bending

20 *points*

Thermal Diffusivity

14 *mm ^{2}/s*

Thermal Shock Resistance

17 *points*

## Alloy Composition

Fe | 94.6 to 96.7 | |

Ni | 3.2 to 3.8 | |

Mn | 0 to 0.88 | |

Si | 0.13 to 0.45 | |

C | 0 to 0.23 | |

P | 0 to 0.035 | |

S | 0 to 0.035 |

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

## Followup Questions

## Similar Alloys

## Further Reading

ASTM A203: Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel

Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011

Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005

Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008

Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015