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.
| Fe | 56.9 to 60.5 | |
| Ni | 17 to 18 | |
| Cr | 17 to 18 | |
| Si | 5.0 to 5.6 | |
| Mn | 0.5 to 0.8 | |
| Cu | 0 to 0.35 | |
| Mo | 0 to 0.2 | |
| N | 0 to 0.050 | |
| P | 0 to 0.030 | |
| C | 0 to 0.015 | |
| 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