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Precipitation Hardened (+P1450) 1.4568 Stainless Steel

EN 1.4568 +P1450 steel is EN 1.4568 stainless steel in the aged (precipitation hardened) condition. The graph bars on the material properties cards below compare EN 1.4568 +P1450 steel to: wrought precipitation-hardening 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 106 psi

Elongation at Break

2.3 %

Fatigue Strength

670 MPa 97 x 103 psi

Poisson's Ratio

0.28

Shear Modulus

76 GPa 11 x 106 psi

Shear Strength

930 MPa 130 x 103 psi

Tensile Strength: Ultimate (UTS)

1620 MPa 240 x 103 psi

Tensile Strength: Yield (Proof)

1490 MPa 220 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

410 °C 770 °F

Maximum Temperature: Mechanical

890 °C 1640 °F

Melting Completion (Liquidus)

1420 °C 2600 °F

Melting Onset (Solidus)

1380 °C 2520 °F

Specific Heat Capacity

480 J/kg-K 0.12 BTU/lb-°F

Thermal Conductivity

16 W/m-K 9.3 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

13 % relative

Density

7.7 g/cm3 480 lb/ft3

Embodied Carbon

2.8 kg CO2/kg material

Embodied Energy

40 MJ/kg 17 x 103 BTU/lb

Embodied Water

140 L/kg 17 gal/lb

Common Calculations

PREN (Pitting Resistance)

17

Resilience: Ultimate (Unit Rupture Work)

36 MJ/m3

Resilience: Unit (Modulus of Resilience)

5710 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

58 points

Strength to Weight: Bending

40 points

Thermal Diffusivity

4.3 mm2/s

Thermal Shock Resistance

46 points

Alloy Composition

Iron (Fe)Fe 70.9 to 76.8
Chromium (Cr)Cr 16 to 18
Nickel (Ni)Ni 6.5 to 7.8
Aluminum (Al)Al 0.7 to 1.5
Manganese (Mn)Mn 0 to 1.0
Silicon (Si)Si 0 to 0.7
Carbon (C)C 0 to 0.090
Phosphorus (P)P 0 to 0.040
Sulfur (S)S 0 to 0.015

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

Followup Questions

Further Reading

EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes

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