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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.

Iron (Fe) 84.5 to 89
Chromium (Cr) 11 to 13
Manganese (Mn) 0 to 1.0
Silicon (Si) 0 to 1.0
Niobium (Nb) 0.050 to 0.3
Carbon (C) 0 to 0.18
Phosphorus (P) 0 to 0.040
Sulfur (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