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UNS S35000 (Alloy 350, Alloy 633) Stainless Steel

S35000 stainless steel is a precipitation-hardening stainless steel formulated for primary forming into wrought products. S35000 is the UNS number for this material. Additionally, the common industry name is Alloy 360.

It can have a moderately high tensile strength among the wrought precipitation-hardening stainless steels in the database.

The properties of S35000 stainless steel include three 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 S35000 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

200 GPa 29 x 106 psi

Elongation at Break

2.3 to 14 %

Fatigue Strength

380 to 520 MPa 54 to 75 x 103 psi

Poisson's Ratio

0.28

Rockwell C Hardness

26 to 37

Shear Modulus

78 GPa 11 x 106 psi

Shear Strength

740 to 950 MPa 110 to 140 x 103 psi

Tensile Strength: Ultimate (UTS)

1300 to 1570 MPa 190 to 230 x 103 psi

Tensile Strength: Yield (Proof)

660 to 1160 MPa 95 to 170 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

410 °C 760 °F

Maximum Temperature: Mechanical

900 °C 1650 °F

Melting Completion (Liquidus)

1460 °C 2660 °F

Melting Onset (Solidus)

1410 °C 2580 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

16 W/m-K 9.3 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

2.3 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

14 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

3.2 kg CO2/kg material

Embodied Energy

44 MJ/kg 19 x 103 BTU/lb

Embodied Water

130 L/kg 16 gal/lb

Common Calculations

PREN (Pitting Resistance)

28

Resilience: Ultimate (Unit Rupture Work)

28 to 170 MJ/m3

Resilience: Unit (Modulus of Resilience)

1070 to 3360 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

46 to 56 points

Strength to Weight: Bending

34 to 38 points

Thermal Diffusivity

4.4 mm2/s

Thermal Shock Resistance

42 to 51 points

Alloy Composition

Among wrought stainless steels, the composition of S35000 stainless steel is notable for containing comparatively high amounts of molybdenum (Mo) and chromium (Cr). Molybdenum is used to facilitate tempering. In addition, it offers modest bonuses to a wide range of material properties. Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.

Iron (Fe) 72.7 to 76.9
Chromium (Cr) 16 to 17
Nickel (Ni) 4.0 to 5.0
Molybdenum (Mo) 2.5 to 3.2
Manganese (Mn) 0.5 to 1.3
Silicon (Si) 0 to 0.5
Nitrogen (N) 0.070 to 0.13
Carbon (C) 0.070 to 0.11
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

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

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 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