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EN 1.1127 Steel vs. EN 1.4634 Stainless Steel

Both EN 1.1127 steel and EN 1.4634 stainless 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 1.1127 steel and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 25
21
Fatigue Strength, MPa 280 to 370
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 420 to 480
340
Tensile Strength: Ultimate (UTS), MPa 660 to 790
540
Tensile Strength: Yield (Proof), MPa 410 to 580
280

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
900
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 49
21
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.9
Embodied Energy, MJ/kg 19
42
Embodied Water, L/kg 49
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 140
93
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 880
200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 28
20
Strength to Weight: Bending, points 22 to 24
19
Thermal Diffusivity, mm2/s 13
5.8
Thermal Shock Resistance, points 21 to 25
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0.34 to 0.42
0 to 0.030
Chromium (Cr), % 0 to 0.4
17.5 to 18.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 96.6 to 98.1
74.9 to 81.8
Manganese (Mn), % 1.4 to 1.7
0 to 1.0
Molybdenum (Mo), % 0 to 0.1
0 to 0.5
Nickel (Ni), % 0 to 0.4
0 to 0.5
Niobium (Nb), % 0
0.3 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0.15 to 0.35
0.2 to 1.5
Sulfur (S), % 0 to 0.035
0 to 0.050