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EN 1.4634 Stainless Steel vs. EN 1.1181 Steel

Both EN 1.4634 stainless steel and EN 1.1181 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 (4, 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 1.1181 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
19 to 20
Fatigue Strength, MPa 180
190 to 260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 340
350 to 390
Tensile Strength: Ultimate (UTS), MPa 540
560 to 620
Tensile Strength: Yield (Proof), MPa 280
280 to 380

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
42
Thermal Expansion, µm/m-K 10
11

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
90 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 200
210 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
20 to 22
Strength to Weight: Bending, points 19
19 to 21
Thermal Diffusivity, mm2/s 5.8
11
Thermal Shock Resistance, points 19
19 to 21

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0.32 to 0.39
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
97.4 to 99.18
Manganese (Mn), % 0 to 1.0
0.5 to 0.8
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