UNS S41041 Stainless Steel
S41041 stainless steel is a martensitic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the heat treated (HT) condition. It has a moderately high tensile strength among the wrought martensitic stainless steels in the database.
The graph bars on the material properties cards below compare S41041 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
240
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
17 %
Fatigue Strength
350 MPa 51 x 103 psi
Impact Strength: V-Notched Charpy
31 J 23 ft-lb
Poisson's Ratio
0.28
Reduction in Area
56 %
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
560 MPa 81 x 103 psi
Tensile Strength: Ultimate (UTS)
910 MPa 130 x 103 psi
Tensile Strength: Yield (Proof)
580 MPa 84 x 103 psi
Thermal Properties
Latent Heat of Fusion
270 J/g
Maximum Temperature: Corrosion
430 °C 800 °F
Maximum Temperature: Mechanical
740 °C 1360 °F
Melting Completion (Liquidus)
1450 °C 2640 °F
Melting Onset (Solidus)
1410 °C 2560 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
29 W/m-K 17 BTU/h-ft-°F
Thermal Expansion
10 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.3 % IACS
Otherwise Unclassified Properties
Base Metal Price
8.5 % relative
Density
7.8 g/cm3 480 lb/ft3
Embodied Carbon
2.2 kg CO2/kg material
Embodied Energy
31 MJ/kg 13 x 103 BTU/lb
Embodied Water
100 L/kg 12 gal/lb
Common Calculations
PREN (Pitting Resistance)
13
Resilience: Ultimate (Unit Rupture Work)
140 MJ/m3
Resilience: Unit (Modulus of Resilience)
860 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
32 points
Strength to Weight: Bending
27 points
Thermal Diffusivity
7.8 mm2/s
Thermal Shock Resistance
33 points
Alloy Composition
Among wrought stainless steels, the composition of S41041 stainless steel is notable for including aluminum (Al) and niobium (Nb). Aluminum is used to improve oxidation resistance. It can also enhance the effects of heat treatment. Niobium is primarily used to improve yield strength, particularly at elevated temperatures.
| Fe | 84.5 to 87.8 | |
| Cr | 11.5 to 13 | |
| Mn | 0.4 to 0.6 | |
| Nb | 0.15 to 0.45 | |
| Si | 0 to 0.5 | |
| Ni | 0 to 0.5 | |
| C | 0.13 to 0.18 | |
| Mo | 0 to 0.2 | |
| Al | 0 to 0.050 | |
| P | 0 to 0.030 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM A565: Standard Specification for Martensitic Stainless Steel Bars for High-Temperature Service
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