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S44660 Stainless Steel vs. EN 1.4550 Stainless Steel

Both S44660 stainless steel and EN 1.4550 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S44660 stainless steel and the bottom bar is EN 1.4550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
200
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 20
42
Fatigue Strength, MPa 330
210
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 410
430
Tensile Strength: Ultimate (UTS), MPa 660
620
Tensile Strength: Yield (Proof), MPa 510
230

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 640
480
Maximum Temperature: Mechanical, °C 1100
940
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 21
18
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 4.3
3.6
Embodied Energy, MJ/kg 61
51
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 38
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
210
Resilience: Unit (Modulus of Resilience), kJ/m3 640
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 4.5
4.0
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 25 to 28
17 to 19
Iron (Fe), % 60.4 to 71
64.9 to 74
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 1.0 to 3.5
9.0 to 12
Niobium (Nb), % 0.2 to 1.0
0 to 1.0
Nitrogen (N), % 0 to 0.040
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0.2 to 1.0
0