AISI 410Cb (XM-30, S41040) Stainless Steel
AISI 410Cb stainless steel is a martensitic stainless steel formulated for primary forming into wrought products. 410Cb is the AISI designation for this material. XM-30 is the ASTM designation. And S41040 is the UNS number.
It has a moderately low ductility among the wrought martensitic stainless steels in the database.
The properties of AISI 410Cb stainless steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare AISI 410Cb 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
200 to 270
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
15 %
Fatigue Strength
180 to 460 MPa 26 to 66 x 103 psi
Poisson's Ratio
0.28
Reduction in Area
50 to 51 %
Shear Modulus
76 GPa 11 x 106 psi
Shear Strength
340 to 590 MPa 49 to 85 x 103 psi
Tensile Strength: Ultimate (UTS)
550 to 960 MPa 80 to 140 x 103 psi
Tensile Strength: Yield (Proof)
310 to 790 MPa 45 to 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
270 J/g
Maximum Temperature: Corrosion
410 °C 770 °F
Maximum Temperature: Mechanical
730 °C 1340 °F
Melting Completion (Liquidus)
1450 °C 2630 °F
Melting Onset (Solidus)
1400 °C 2560 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
27 W/m-K 16 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
7.5 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
2.0 kg CO2/kg material
Embodied Energy
29 MJ/kg 12 x 103 BTU/lb
Embodied Water
97 L/kg 12 gal/lb
Common Calculations
PREN (Pitting Resistance)
12
Resilience: Ultimate (Unit Rupture Work)
70 to 130 MJ/m3
Resilience: Unit (Modulus of Resilience)
240 to 1600 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
20 to 35 points
Strength to Weight: Bending
19 to 28 points
Thermal Diffusivity
7.3 mm2/s
Thermal Shock Resistance
20 to 35 points
Alloy Composition
Among wrought stainless steels, the composition of AISI 410Cb stainless steel is notable for including niobium (Nb). Niobium is primarily used to improve yield strength, particularly at elevated temperatures.
| Fe | 84.5 to 89 | |
| Cr | 11 to 13 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| Nb | 0.050 to 0.3 | |
| C | 0 to 0.18 | |
| P | 0 to 0.040 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
Creep-Resistant Steels, Fujio Abe et al. (editors), 2008
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012
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
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