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AISI 444 Stainless Steel vs. S31060 Stainless Steel

Both AISI 444 stainless steel and S31060 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 84% of their average alloy composition in common.

For each property being compared, the top bar is AISI 444 stainless steel and the bottom bar is S31060 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
46
Fatigue Strength, MPa 210
290
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 83
82
Shear Modulus, GPa 78
78
Shear Strength, MPa 300
480
Tensile Strength: Ultimate (UTS), MPa 470
680
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 580
440
Maximum Temperature: Mechanical, °C 930
1080
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
18
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.4
3.4
Embodied Energy, MJ/kg 47
48
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 26
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
260
Resilience: Unit (Modulus of Resilience), kJ/m3 240
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 6.2
4.0
Thermal Shock Resistance, points 16
15

Alloy Composition

Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0 to 0.025
0.050 to 0.1
Cerium (Ce), % 0
0 to 0.070
Chromium (Cr), % 17.5 to 19.5
22 to 24
Iron (Fe), % 73.3 to 80.8
61.4 to 67.8
Lanthanum (La), % 0
0 to 0.070
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.8 to 2.5
0
Nickel (Ni), % 0 to 1.0
10 to 12.5
Niobium (Nb), % 0.2 to 0.8
0
Nitrogen (N), % 0 to 0.035
0.18 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.2 to 0.8
0