H900 Hardened S45000 Stainless Steel
H900 hardened S45000 stainless steel is S45000 stainless steel in the hardened (H) condition. It has the highest strength and lowest ductility compared to the other variants of S45000 stainless steel.
The graph bars on the material properties cards below compare H900 hardened S45000 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
Brinell Hardness
410
Elastic (Young's, Tensile) Modulus
200 GPa 28 x 106 psi
Elongation at Break
6.8 %
Fatigue Strength
650 MPa 95 x 103 psi
Poisson's Ratio
0.28
Reduction in Area
22 %
Rockwell C Hardness
44
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
830 MPa 120 x 103 psi
Tensile Strength: Ultimate (UTS)
1410 MPa 210 x 103 psi
Tensile Strength: Yield (Proof)
1310 MPa 190 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
400 °C 750 °F
Maximum Temperature: Mechanical
840 °C 1550 °F
Melting Completion (Liquidus)
1440 °C 2620 °F
Melting Onset (Solidus)
1390 °C 2540 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
17 W/m-K 9.6 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
13 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
39 MJ/kg 17 x 103 BTU/lb
Embodied Water
130 L/kg 15 gal/lb
Common Calculations
PREN (Pitting Resistance)
17
Resilience: Ultimate (Unit Rupture Work)
94 MJ/m3
Resilience: Unit (Modulus of Resilience)
4400 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
50 points
Strength to Weight: Bending
36 points
Thermal Diffusivity
4.5 mm2/s
Thermal Shock Resistance
47 points
Alloy Composition
| Fe | 72.1 to 79.3 | |
| Cr | 14 to 16 | |
| Ni | 5.0 to 7.0 | |
| Cu | 1.3 to 1.8 | |
| Mo | 0.5 to 1.0 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| C | 0 to 0.050 | |
| 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 A564: Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
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