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SAE-AISI 5155 Steel vs. EN 1.4112 Stainless Steel

Both SAE-AISI 5155 steel and EN 1.4112 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 81% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5155 steel and the bottom bar is EN 1.4112 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
20
Fatigue Strength, MPa 260
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 390
470
Tensile Strength: Ultimate (UTS), MPa 620
750
Tensile Strength: Yield (Proof), MPa 380
430

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 420
910
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 49
15
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 19
37
Embodied Water, L/kg 49
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 380
480
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
27
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 13
4.1
Thermal Shock Resistance, points 20
26

Alloy Composition

Carbon (C), % 0.51 to 0.59
0.85 to 1.0
Chromium (Cr), % 0.7 to 0.9
17 to 19
Iron (Fe), % 97.2 to 97.9
76.6 to 81.2
Manganese (Mn), % 0.7 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015
Vanadium (V), % 0
0.070 to 0.12