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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.

Iron (Fe) 33.6 to 40.6
Nickel (Ni) 34 to 36
Chromium (Cr) 24 to 26
Silicon (Si) 1.2 to 2.0
Manganese (Mn) 0 to 2.0
Nitrogen (N) 0.12 to 0.18
Cerium (Ce) 0.030 to 0.1
Carbon (C) 0.040 to 0.080
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

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