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S31060 Stainless Steel vs. S44725 Stainless Steel

Both S31060 stainless steel and S44725 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 88% of their average alloy composition in common.

For each property being compared, the top bar is S31060 stainless steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
22
Fatigue Strength, MPa 290
210
Poisson's Ratio 0.27
0.27
Rockwell B Hardness 82
84
Shear Modulus, GPa 78
81
Shear Strength, MPa 480
320
Tensile Strength: Ultimate (UTS), MPa 680
500
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 440
500
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 18
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.4
3.1
Embodied Energy, MJ/kg 48
44
Embodied Water, L/kg 170
170

Common Calculations

PREN (Pitting Resistance) 26
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
99
Resilience: Unit (Modulus of Resilience), kJ/m3 250
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 15
16

Alloy Composition

Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0.050 to 0.1
0 to 0.015
Cerium (Ce), % 0 to 0.070
0
Chromium (Cr), % 22 to 24
25 to 28.5
Iron (Fe), % 61.4 to 67.8
67.6 to 73.5
Lanthanum (La), % 0 to 0.070
0
Manganese (Mn), % 0 to 1.0
0 to 0.4
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 10 to 12.5
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0.18 to 0.25
0 to 0.018
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.040
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.26