Condition HT Heat Treated S41425 Stainless Steel
Condition HT S41425 stainless steel is S41425 stainless steel in the heat treated (HT) condition. The graph bars on the material properties cards below compare condition HT S41425 stainless steel to: wrought martensitic 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
280
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
17 %
Fatigue Strength
450 MPa 66 x 103 psi
Impact Strength: V-Notched Charpy
76 J 56 ft-lb
Poisson's Ratio
0.28
Reduction in Area
51 %
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
570 MPa 82 x 103 psi
Tensile Strength: Ultimate (UTS)
920 MPa 130 x 103 psi
Tensile Strength: Yield (Proof)
750 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
390 °C 740 °F
Maximum Temperature: Mechanical
810 °C 1490 °F
Melting Completion (Liquidus)
1450 °C 2650 °F
Melting Onset (Solidus)
1410 °C 2570 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
16 W/m-K 9.4 BTU/h-ft-°F
Thermal Expansion
10 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.7 % IACS
Otherwise Unclassified Properties
Base Metal Price
13 % relative
Density
7.9 g/cm3 490 lb/ft3
Embodied Carbon
2.9 kg CO2/kg material
Embodied Energy
40 MJ/kg 17 x 103 BTU/lb
Embodied Water
120 L/kg 14 gal/lb
Common Calculations
PREN (Pitting Resistance)
21
Resilience: Ultimate (Unit Rupture Work)
150 MJ/m3
Resilience: Unit (Modulus of Resilience)
1420 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
33 points
Strength to Weight: Bending
27 points
Thermal Diffusivity
4.4 mm2/s
Thermal Shock Resistance
33 points
Alloy Composition
| Fe | 74 to 81.9 | |
| Cr | 12 to 15 | |
| Ni | 4.0 to 7.0 | |
| Mo | 1.5 to 2.0 | |
| Mn | 0.5 to 1.0 | |
| Si | 0 to 0.5 | |
| Cu | 0 to 0.3 | |
| N | 0.060 to 0.12 | |
| C | 0 to 0.050 | |
| P | 0 to 0.020 | |
| S | 0 to 0.0050 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM A565: Standard Specification for Martensitic Stainless Steel Bars for High-Temperature Service
ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
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