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UNS S46500 (Alloy 465) Stainless Steel

S46500 stainless steel is a precipitation-hardening stainless steel formulated for primary forming into wrought products. S46500 is the UNS number for this material. Alloy 465 is the common industry name.

It can have a moderately high tensile strength and has a moderately high embodied energy among wrought precipitation-hardening stainless steels.

The properties of S46500 stainless steel include seven common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare S46500 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

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

2.3 to 14 %

Fatigue Strength

550 to 890 MPa 79 to 130 x 103 psi

Poisson's Ratio

0.28

Rockwell C Hardness

29 to 54

Shear Modulus

75 GPa 11 x 106 psi

Shear Strength

730 to 1120 MPa 110 to 160 x 103 psi

Tensile Strength: Ultimate (UTS)

1260 to 1930 MPa 180 to 280 x 103 psi

Tensile Strength: Yield (Proof)

1120 to 1810 MPa 160 to 260 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

680 °C 1260 °F

Maximum Temperature: Mechanical

780 °C 1430 °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 Expansion

11 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

15 % relative

Density

7.9 g/cm3 490 lb/ft3

Embodied Carbon

3.6 kg CO2/kg material

Embodied Energy

51 MJ/kg 22 x 103 BTU/lb

Embodied Water

120 L/kg 14 gal/lb

Common Calculations

PREN (Pitting Resistance)

15

Resilience: Ultimate (Unit Rupture Work)

43 to 210 MJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

44 to 68 points

Strength to Weight: Bending

33 to 44 points

Thermal Shock Resistance

44 to 67 points

Alloy Composition

Among wrought stainless steels, the composition of S46500 stainless steel is notable for including titanium (Ti). Titanium is used to broadly improve mechanical properties.

Iron (Fe) 72.6 to 76.1
Chromium (Cr) 11 to 12.5
Nickel (Ni) 10.7 to 11.3
Titanium (Ti) 1.5 to 1.8
Molybdenum (Mo) 0.75 to 1.3
Manganese (Mn) 0 to 0.25
Silicon (Si) 0 to 0.25
Carbon (C) 0 to 0.020
Phosphorus (P) 0 to 0.015
Sulfur (S) 0 to 0.010
Nitrogen (N) 0 to 0.010

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM A693: Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

ASTM A564: Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes

Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012

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