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EN 1.4849 Stainless Steel vs. SAE-AISI 1144 Steel

Both EN 1.4849 stainless steel and SAE-AISI 1144 steel are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4849 stainless steel and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.5
11 to 17
Fatigue Strength, MPa 120
280 to 430
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
72
Tensile Strength: Ultimate (UTS), MPa 480
750 to 840
Tensile Strength: Yield (Proof), MPa 250
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1020
400
Melting Completion (Liquidus), °C 1390
1450
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
51
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 42
1.9
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 7.1
1.4
Embodied Energy, MJ/kg 100
19
Embodied Water, L/kg 200
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
480 to 1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
27 to 30
Strength to Weight: Bending, points 17
23 to 25
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 11
22 to 24

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.4 to 0.48
Chromium (Cr), % 18 to 21
0
Iron (Fe), % 32.6 to 43.5
97.5 to 98
Manganese (Mn), % 0 to 2.0
1.4 to 1.7
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 36 to 39
0
Niobium (Nb), % 1.2 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
0
Sulfur (S), % 0 to 0.030
0.24 to 0.33