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
| Fe | 61.2 to 69 | |
| Cr | 17 to 19 | |
| Mn | 11.5 to 14.5 | |
| Ni | 2.3 to 3.7 | |
| Si | 0 to 1.0 | |
| N | 0.2 to 0.4 | |
| C | 0 to 0.080 | |
| P | 0 to 0.060 | |
| 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