RH950 Hardened S15700 Stainless Steel
RH950 hardened S15700 stainless steel is S15700 stainless steel in the hardened (H) condition. The graph bars on the material properties cards below compare RH950 hardened S15700 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
460
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
8.0 %
Fatigue Strength
690 MPa 100 x 103 psi
Poisson's Ratio
0.28
Reduction in Area
28 %
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
930 MPa 130 x 103 psi
Tensile Strength: Ultimate (UTS)
1570 MPa 230 x 103 psi
Tensile Strength: Yield (Proof)
1360 MPa 200 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
400 °C 750 °F
Maximum Temperature: Mechanical
870 °C 1590 °F
Melting Completion (Liquidus)
1440 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2550 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
16 W/m-K 9.0 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.6 % IACS
Otherwise Unclassified Properties
Base Metal Price
15 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
3.4 kg CO2/kg material
Embodied Energy
47 MJ/kg 20 x 103 BTU/lb
Embodied Water
140 L/kg 17 gal/lb
Common Calculations
PREN (Pitting Resistance)
23
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
4660 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
56 points
Strength to Weight: Bending
39 points
Thermal Diffusivity
4.2 mm2/s
Thermal Shock Resistance
52 points
Alloy Composition
| Fe | 69.6 to 76.8 | |
| Cr | 14 to 16 | |
| Ni | 6.5 to 7.7 | |
| Mo | 2.0 to 3.0 | |
| Al | 0.75 to 1.5 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| C | 0 to 0.090 | |
| 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
Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016
Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012
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
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015