Half-Hard N08800 Stainless Steel
Half-hard N08800 stainless steel is N08800 stainless steel in the half-hard temper. The graph bars on the material properties cards below compare half-hard N08800 stainless steel to: wrought superaustenitic 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 29 x 106 psi
Elongation at Break
15 %
Fatigue Strength
270 MPa 39 x 103 psi
Poisson's Ratio
0.28
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
500 MPa 73 x 103 psi
Tensile Strength: Ultimate (UTS)
830 MPa 120 x 103 psi
Tensile Strength: Yield (Proof)
460 MPa 67 x 103 psi
Thermal Properties
Curie Temperature
-120 °C -180 °F
Latent Heat of Fusion
300 J/g
Maximum Temperature: Corrosion
490 °C 920 °F
Maximum Temperature: Mechanical
1100 °C 2010 °F
Melting Completion (Liquidus)
1390 °C 2530 °F
Melting Onset (Solidus)
1360 °C 2470 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
12 W/m-K 6.6 BTU/h-ft-°F
Thermal Expansion
14 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.7 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.9 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.0 g/cm3 500 lb/ft3
Embodied Carbon
5.3 kg CO2/kg material
Embodied Energy
76 MJ/kg 33 x 103 BTU/lb
Embodied Water
200 L/kg 24 gal/lb
Common Calculations
PREN (Pitting Resistance)
21
Resilience: Ultimate (Unit Rupture Work)
100 MJ/m3
Resilience: Unit (Modulus of Resilience)
550 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
29 points
Strength to Weight: Bending
24 points
Thermal Diffusivity
3.0 mm2/s
Thermal Shock Resistance
21 points
Alloy Composition
| Fe | 39.5 to 50.7 | |
| Ni | 30 to 35 | |
| Cr | 19 to 23 | |
| Mn | 0 to 1.5 | |
| Si | 0 to 1.0 | |
| Al | 0.15 to 0.6 | |
| Ti | 0.15 to 0.6 | |
| Cu | 0 to 0.75 | |
| C | 0 to 0.1 | |
| P | 0 to 0.045 | |
| S | 0 to 0.015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B407: Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube
EN 10095: Heat resisting steels and nickel alloys
ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys, Joseph R. Davis (editor), 2000
Nickel Alloys, Ulrich Heubner (editor), 1998
ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought 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
ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010