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S31655 Stainless Steel vs. EN 1.0644 Steel

Both S31655 stainless steel and EN 1.0644 steel are iron alloys. They have 69% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31655 stainless steel and the bottom bar is EN 1.0644 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
17
Fatigue Strength, MPa 300
380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 490
420
Tensile Strength: Ultimate (UTS), MPa 710
690
Tensile Strength: Yield (Proof), MPa 350
570

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1010
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.8
Embodied Energy, MJ/kg 46
24
Embodied Water, L/kg 160
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
870
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 16
22

Alloy Composition

Aluminum (Al), % 0
0.010 to 0.050
Carbon (C), % 0 to 0.030
0.16 to 0.22
Chromium (Cr), % 19.5 to 21.5
0 to 0.3
Copper (Cu), % 0 to 1.0
0 to 0.3
Iron (Fe), % 63.2 to 71.9
96.1 to 98.4
Manganese (Mn), % 0 to 2.0
1.3 to 1.7
Molybdenum (Mo), % 0.5 to 1.5
0 to 0.080
Nickel (Ni), % 8.0 to 9.5
0 to 0.4
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0.14 to 0.25
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.1 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.035
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0.080 to 0.15