H850 Hardened S35500 Stainless Steel
H850 hardened S35500 stainless steel is S35500 stainless steel in the hardened (H) condition. The graph bars on the material properties cards below compare H850 hardened S35500 stainless 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 29 x 106 psi
Elongation at Break
14 %
Fatigue Strength
730 MPa 110 x 103 psi
Poisson's Ratio
0.28
Rockwell C Hardness
33
Shear Modulus
78 GPa 11 x 106 psi
Shear Strength
910 MPa 130 x 103 psi
Tensile Strength: Ultimate (UTS)
1490 MPa 220 x 103 psi
Tensile Strength: Yield (Proof)
1280 MPa 190 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
440 °C 830 °F
Maximum Temperature: Mechanical
870 °C 1610 °F
Melting Completion (Liquidus)
1460 °C 2660 °F
Melting Onset (Solidus)
1420 °C 2580 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
16 W/m-K 9.5 BTU/h-ft-°F
Thermal Expansion
11 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
16 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
3.5 kg CO2/kg material
Embodied Energy
47 MJ/kg 20 x 103 BTU/lb
Embodied Water
130 L/kg 16 gal/lb
Common Calculations
PREN (Pitting Resistance)
27
Resilience: Ultimate (Unit Rupture Work)
190 MJ/m3
Resilience: Unit (Modulus of Resilience)
4100 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
53 points
Strength to Weight: Bending
37 points
Thermal Diffusivity
4.4 mm2/s
Thermal Shock Resistance
49 points
Alloy Composition
| Fe | 73.2 to 77.7 | |
| Cr | 15 to 16 | |
| Ni | 4.0 to 5.0 | |
| Mo | 2.5 to 3.2 | |
| Mn | 0.5 to 1.3 | |
| Nb | 0.1 to 0.5 | |
| Si | 0 to 0.5 | |
| C | 0.1 to 0.15 | |
| N | 0.070 to 0.13 | |
| 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 A693: Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005
ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
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