H900 Hardened S45500 Stainless Steel vs. H950 Hardened S45500 Stainless Steel
Both H900 hardened S45500 stainless steel and H950 hardened S45500 stainless steel are variants of the same material. They share alloy composition and many physical properties, but develop different mechanical properties as a result of different processing.
For each property being compared, the top bar is H900 hardened S45500 stainless steel and the bottom bar is H950 hardened S45500 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 500 | |
| 460 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 9.1 | |
| 11 |
| Fatigue Strength, MPa | 890 | |
| 870 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Reduction in Area, % | 34 | |
| 45 |
| Rockwell C Hardness | 54 | |
| 50 |
| Shear Modulus, GPa | 75 | |
| 75 |
| Shear Strength, MPa | 1090 | |
| 1030 |
| Tensile Strength: Ultimate (UTS), MPa | 1850 | |
| 1730 |
| Tensile Strength: Yield (Proof), MPa | 1700 | |
| 1580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 620 | |
| 620 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 760 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1400 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 11 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 17 | |
| 17 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.8 | |
| 3.8 |
| Embodied Energy, MJ/kg | 57 | |
| 57 |
| Embodied Water, L/kg | 120 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 13 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 | |
| 190 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 65 | |
| 61 |
| Strength to Weight: Bending, points | 42 | |
| 41 |
| Thermal Shock Resistance, points | 64 | |
| 60 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.050 |
| Chromium (Cr), % | 11 to 12.5 | |
| 11 to 12.5 |
| Copper (Cu), % | 1.5 to 2.5 | |
| 1.5 to 2.5 |
| Iron (Fe), % | 71.5 to 79.2 | |
| 71.5 to 79.2 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 to 0.5 |
| Nickel (Ni), % | 7.5 to 9.5 | |
| 7.5 to 9.5 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 to 0.5 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 to 0.5 | |
| 0 to 0.5 |
| Titanium (Ti), % | 0.8 to 1.4 | |
| 0.8 to 1.4 |