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SAE-AISI 1144 Steel vs. EN 1.4109 Stainless Steel

Both SAE-AISI 1144 steel and EN 1.4109 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 31 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 SAE-AISI 1144 steel and the bottom bar is EN 1.4109 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
19
Fatigue Strength, MPa 280 to 430
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 460 to 510
480
Tensile Strength: Ultimate (UTS), MPa 750 to 840
770
Tensile Strength: Yield (Proof), MPa 420 to 690
420

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
820
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
30
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
8.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.2
Embodied Energy, MJ/kg 19
30
Embodied Water, L/kg 47
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 1290
460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 30
28
Strength to Weight: Bending, points 23 to 25
24
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 22 to 24
28

Alloy Composition

Carbon (C), % 0.4 to 0.48
0.6 to 0.75
Chromium (Cr), % 0
14 to 16
Iron (Fe), % 97.5 to 98
80.7 to 85
Manganese (Mn), % 1.4 to 1.7
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 0.7
Sulfur (S), % 0.24 to 0.33
0 to 0.015