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EN 1.4634 Stainless Steel vs. EN 1.1203 Steel

Both EN 1.4634 stainless steel and EN 1.1203 steel are iron alloys. They have 80% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4634 stainless steel and the bottom bar is EN 1.1203 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
12 to 15
Fatigue Strength, MPa 180
210 to 310
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 340
420 to 480
Tensile Strength: Ultimate (UTS), MPa 540
690 to 780
Tensile Strength: Yield (Proof), MPa 280
340 to 480

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 900
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
48
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.1
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.4
Embodied Energy, MJ/kg 42
19
Embodied Water, L/kg 140
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
69 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 200
310 to 610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
25 to 28
Strength to Weight: Bending, points 19
22 to 24
Thermal Diffusivity, mm2/s 5.8
13
Thermal Shock Resistance, points 19
22 to 25

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0.52 to 0.6
Chromium (Cr), % 17.5 to 18.5
0 to 0.4
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 74.9 to 81.8
97.1 to 98.9
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Molybdenum (Mo), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 0 to 0.5
0 to 0.4
Niobium (Nb), % 0.3 to 1.0
0
Phosphorus (P), % 0 to 0.050
0 to 0.035
Silicon (Si), % 0.2 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.035