H925 Hardened S15500 Stainless Steel
H925 hardened S15500 stainless steel is S15500 stainless steel in the hardened (H) condition. It has the second highest strength and second lowest ductility compared to the other variants of S15500 stainless steel.
The graph bars on the material properties cards below compare H925 hardened S15500 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
420
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
8.0 %
Fatigue Strength
610 MPa 89 x 103 psi
Impact Strength: V-Notched Charpy
7.8 J 5.7 ft-lb
Poisson's Ratio
0.28
Reduction in Area
22 %
Rockwell C Hardness
43
Shear Modulus
75 GPa 11 x 106 psi
Shear Strength
790 MPa 110 x 103 psi
Tensile Strength: Ultimate (UTS)
1330 MPa 190 x 103 psi
Tensile Strength: Yield (Proof)
1200 MPa 170 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
440 °C 830 °F
Maximum Temperature: Mechanical
820 °C 1510 °F
Melting Completion (Liquidus)
1430 °C 2600 °F
Melting Onset (Solidus)
1380 °C 2520 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
17 W/m-K 9.8 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
2.7 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)
15
Resilience: Ultimate (Unit Rupture Work)
100 MJ/m3
Resilience: Unit (Modulus of Resilience)
3730 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
47 points
Strength to Weight: Bending
34 points
Thermal Diffusivity
4.6 mm2/s
Thermal Shock Resistance
45 points
Alloy Composition
| Fe | 71.9 to 79.9 | |
| Cr | 14 to 15.5 | |
| Ni | 3.5 to 5.5 | |
| Cu | 2.5 to 4.5 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| Nb | 0.15 to 0.45 | |
| C | 0 to 0.070 | |
| 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
Metallic Materials: Physical, Mechanical, and Corrosion Properties, Philip A. Schweitzer, 2003
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