Condition H (Hardened) 414 Stainless Steel
Hardened AISI 414 is AISI 414 stainless steel in the hardened (H) condition. The graph bars on the material properties cards below compare hardened AISI 414 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
190 GPa 28 x 106 psi
Elongation at Break
17 %
Fatigue Strength
480 MPa 70 x 103 psi
Poisson's Ratio
0.28
Reduction in Area
50 %
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
590 MPa 86 x 103 psi
Tensile Strength: Ultimate (UTS)
960 MPa 140 x 103 psi
Tensile Strength: Yield (Proof)
790 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
390 °C 730 °F
Maximum Temperature: Mechanical
750 °C 1380 °F
Melting Completion (Liquidus)
1440 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2550 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
25 W/m-K 14 BTU/h-ft-°F
Thermal Expansion
10 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.9 % IACS
Otherwise Unclassified Properties
Base Metal Price
8.0 % relative
Density
7.8 g/cm3 480 lb/ft3
Embodied Carbon
2.1 kg CO2/kg material
Embodied Energy
29 MJ/kg 12 x 103 BTU/lb
Embodied Water
100 L/kg 12 gal/lb
Common Calculations
PREN (Pitting Resistance)
13
Resilience: Ultimate (Unit Rupture Work)
150 MJ/m3
Resilience: Unit (Modulus of Resilience)
1590 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
34 points
Strength to Weight: Bending
28 points
Thermal Diffusivity
6.7 mm2/s
Thermal Shock Resistance
35 points
Alloy Composition
| Fe | 81.8 to 87.3 | |
| Cr | 11.5 to 13.5 | |
| Ni | 1.3 to 2.5 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| C | 0 to 0.15 | |
| P | 0 to 0.040 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM A473: Standard Specification for Stainless Steel Forgings
Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
Corrosion of Stainless Steels, A. John Sedriks, 1996
ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010