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UNS S30601 (Alloy 611) Stainless Steel

S30601 stainless steel is an austenitic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. S30601 is the UNS number for this material. Alloy 611 is the common industry name.

It has a moderately low ductility among the wrought austenitic stainless steels in the database.

The graph bars on the material properties cards below compare S30601 stainless steel to: wrought austenitic 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

190

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

37 %

Fatigue Strength

250 MPa 36 x 103 psi

Poisson's Ratio

0.28

Reduction in Area

56 %

Shear Modulus

75 GPa 11 x 106 psi

Shear Strength

450 MPa 65 x 103 psi

Tensile Strength: Ultimate (UTS)

660 MPa 96 x 103 psi

Tensile Strength: Yield (Proof)

300 MPa 43 x 103 psi

Thermal Properties

Latent Heat of Fusion

370 J/g

Maximum Temperature: Corrosion

410 °C 780 °F

Maximum Temperature: Mechanical

950 °C 1740 °F

Melting Completion (Liquidus)

1360 °C 2470 °F

Melting Onset (Solidus)

1310 °C 2400 °F

Specific Heat Capacity

500 J/kg-K 0.12 BTU/lb-°F

Thermal Expansion

15 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

20 % relative

Density

7.6 g/cm3 470 lb/ft3

Embodied Carbon

3.9 kg CO2/kg material

Embodied Energy

55 MJ/kg 24 x 103 BTU/lb

Embodied Water

150 L/kg 18 gal/lb

Common Calculations

PREN (Pitting Resistance)

18

Resilience: Ultimate (Unit Rupture Work)

200 MJ/m3

Resilience: Unit (Modulus of Resilience)

230 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

22 points

Thermal Shock Resistance

16 points

Alloy Composition

Among wrought stainless steels, the composition of S30601 stainless steel is notable for containing a comparatively high amount of silicon (Si). Silicon content is typically governed by metallurgical processing concerns, but it can also be added for the purpose of improving oxidation resistance.

Iron (Fe)Fe 56.9 to 60.5
Nickel (Ni)Ni 17 to 18
Chromium (Cr)Cr 17 to 18
Silicon (Si)Si 5.0 to 5.6
Manganese (Mn)Mn 0.5 to 0.8
Copper (Cu)Cu 0 to 0.35
Molybdenum (Mo)Mo 0 to 0.2
Nitrogen (N)N 0 to 0.050
Phosphorus (P)P 0 to 0.030
Carbon (C)C 0 to 0.015
Sulfur (S)S 0 to 0.013

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

Followup Questions

Similar Alloys

Further Reading

ASTM A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

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

ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Corrosion of Austenitic Stainless Steels: Mechanism, Mitigation and Monitoring, H. S. Khatak and B. Raj (editors), 2002

Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984

Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993

ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994

Advances in Stainless Steels, Baldev Raj et al. (editors), 2010