H900 Hardened S17400 Stainless Steel
H900 hardened S17400 stainless steel is S17400 stainless steel in the hardened (H) condition. It has the highest strength compared to the other variants of S17400 stainless steel.
The graph bars on the material properties cards below compare H900 hardened S17400 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
440
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
11 %
Fatigue Strength
670 MPa 98 x 103 psi
Fracture Toughness
53 MPa-m1/2 48 x 103 psi-in1/2
Poisson's Ratio
0.28
Reduction in Area
40 %
Rockwell C Hardness
42
Shear Modulus
75 GPa 11 x 106 psi
Shear Strength
830 MPa 120 x 103 psi
Tensile Strength: Ultimate (UTS)
1390 MPa 200 x 103 psi
Tensile Strength: Yield (Proof)
1250 MPa 180 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
450 °C 840 °F
Maximum Temperature: Mechanical
850 °C 1570 °F
Melting Completion (Liquidus)
1440 °C 2620 °F
Melting Onset (Solidus)
1400 °C 2550 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
17 W/m-K 9.7 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
14 % 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 16 gal/lb
Common Calculations
PREN (Pitting Resistance)
16
Resilience: Ultimate (Unit Rupture Work)
140 MJ/m3
Resilience: Unit (Modulus of Resilience)
4060 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
49 points
Strength to Weight: Bending
35 points
Thermal Diffusivity
4.5 mm2/s
Thermal Shock Resistance
46 points
Alloy Composition
| Fe | 70.4 to 78.9 | |
| Cr | 15 to 17 | |
| Ni | 3.0 to 5.0 | |
| Cu | 3.0 to 5.0 | |
| 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
Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010
ASTM A276: Standard Specification for 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
Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993
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