UNS S35315 (353 MA) Stainless Steel
S35315 stainless steel is a superaustenitic (highly alloyed) stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. S35315 is the UNS number for this material. 353 MA is the common industry name.
It has a fairly high ductility and a moderately high tensile strength among wrought superaustenitic stainless steels.
The graph bars on the material properties cards below compare S35315 stainless steel to: wrought superaustenitic 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
200 GPa 29 x 106 psi
Elongation at Break
46 %
Fatigue Strength
280 MPa 41 x 103 psi
Poisson's Ratio
0.28
Rockwell B Hardness
82
Shear Modulus
78 GPa 11 x 106 psi
Shear Strength
520 MPa 75 x 103 psi
Tensile Strength: Ultimate (UTS)
740 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
300 MPa 44 x 103 psi
Thermal Properties
Latent Heat of Fusion
330 J/g
Maximum Temperature: Corrosion
450 °C 830 °F
Maximum Temperature: Mechanical
1100 °C 2010 °F
Melting Completion (Liquidus)
1370 °C 2510 °F
Melting Onset (Solidus)
1330 °C 2420 °F
Specific Heat Capacity
480 J/kg-K 0.12 BTU/lb-°F
Thermal Conductivity
12 W/m-K 6.8 BTU/h-ft-°F
Thermal Expansion
16 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.7 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.0 % IACS
Otherwise Unclassified Properties
Base Metal Price
34 % relative
Density
7.9 g/cm3 500 lb/ft3
Embodied Carbon
5.7 kg CO2/kg material
Embodied Energy
81 MJ/kg 35 x 103 BTU/lb
Embodied Water
220 L/kg 26 gal/lb
Common Calculations
PREN (Pitting Resistance)
27
Resilience: Ultimate (Unit Rupture Work)
270 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
26 points
Strength to Weight: Bending
23 points
Thermal Diffusivity
3.1 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
Among wrought stainless steels, the composition of S35315 stainless steel is notable for including cerium (Ce) and containing a comparatively high amount of silicon (Si). Cerium is used to improve high temperature oxidation resistance. Silicon content is typically governed by metallurgical processing concerns, but it can also be added for the purpose of improving oxidation resistance.
| Fe | 33.6 to 40.6 | |
| Ni | 34 to 36 | |
| Cr | 24 to 26 | |
| Si | 1.2 to 2.0 | |
| Mn | 0 to 2.0 | |
| N | 0.12 to 0.18 | |
| Ce | 0.030 to 0.1 | |
| C | 0.040 to 0.080 | |
| 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
EN 10095: Heat resisting steels and nickel alloys
ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
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
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984
ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010