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Cold Worked (+C800) 1.4378 Stainless Steel

EN 1.4378 +C800 steel is EN 1.4378 stainless steel in the cold worked (strain hardened) condition. The graph bars on the material properties cards below compare EN 1.4378 +C800 steel to: wrought austenitic 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

270

Elastic (Young's, Tensile) Modulus

200 GPa 29 x 106 psi

Elongation at Break

23 %

Fatigue Strength

500 MPa 72 x 103 psi

Poisson's Ratio

0.28

Shear Modulus

77 GPa 11 x 106 psi

Shear Strength

570 MPa 83 x 103 psi

Tensile Strength: Ultimate (UTS)

900 MPa 130 x 103 psi

Tensile Strength: Yield (Proof)

740 MPa 110 x 103 psi

Thermal Properties

Latent Heat of Fusion

290 J/g

Maximum Temperature: Corrosion

410 °C 780 °F

Maximum Temperature: Mechanical

910 °C 1660 °F

Melting Completion (Liquidus)

1390 °C 2530 °F

Melting Onset (Solidus)

1350 °C 2450 °F

Specific Heat Capacity

480 J/kg-K 0.12 BTU/lb-°F

Thermal Expansion

17 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

12 % relative

Density

7.6 g/cm3 480 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

39 MJ/kg 17 x 103 BTU/lb

Embodied Water

150 L/kg 18 gal/lb

Common Calculations

PREN (Pitting Resistance)

23

Resilience: Ultimate (Unit Rupture Work)

190 MJ/m3

Resilience: Unit (Modulus of Resilience)

1390 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

33 points

Strength to Weight: Bending

27 points

Thermal Shock Resistance

19 points

Alloy Composition

Iron (Fe)Fe 61.2 to 69
Chromium (Cr)Cr 17 to 19
Manganese (Mn)Mn 11.5 to 14.5
Nickel (Ni)Ni 2.3 to 3.7
Silicon (Si)Si 0 to 1.0
Nitrogen (N)N 0.2 to 0.4
Carbon (C)C 0 to 0.080
Phosphorus (P)P 0 to 0.060
Sulfur (S)S 0 to 0.030

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

Followup Questions

Further Reading

Welding Metallurgy, 2nd ed., Sindo Kou, 2003

EN 10088-3: Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes

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

Corrosion of Austenitic Stainless Steels: Mechanism, Mitigation and Monitoring, H. S. Khatak and B. Raj (editors), 2002

Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984

Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993

Advances in Stainless Steels, Baldev Raj et al. (editors), 2010