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EN 1.0644 Steel vs. EN 1.4405 Stainless Steel

Both EN 1.0644 steel and EN 1.4405 stainless steel are iron alloys. Both are furnished in the quenched and tempered condition. They have 78% of their average alloy composition in common. There are 30 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 EN 1.0644 steel and the bottom bar is EN 1.4405 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
17
Fatigue Strength, MPa 380
370
Impact Strength: V-Notched Charpy, J 38
68
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 690
860
Tensile Strength: Yield (Proof), MPa 570
610

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
870
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 47
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
2.8
Embodied Energy, MJ/kg 24
39
Embodied Water, L/kg 50
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 870
950
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
31
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 13
4.6
Thermal Shock Resistance, points 22
29

Alloy Composition

Aluminum (Al), % 0.010 to 0.050
0
Carbon (C), % 0.16 to 0.22
0 to 0.060
Chromium (Cr), % 0 to 0.3
15 to 17
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.1 to 98.4
73.6 to 80.3
Manganese (Mn), % 1.3 to 1.7
0 to 1.0
Molybdenum (Mo), % 0 to 0.080
0.7 to 1.5
Nickel (Ni), % 0 to 0.4
4.0 to 6.0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.1 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.035
0 to 0.025
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0.080 to 0.15
0