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EN 1.4122 Stainless Steel vs. SAE-AISI 1049 Steel

Both EN 1.4122 stainless steel and SAE-AISI 1049 steel are iron alloys. They have 81% 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 1.4122 stainless steel and the bottom bar is SAE-AISI 1049 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14
11 to 17
Fatigue Strength, MPa 260 to 360
250 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 480 to 520
420 to 450
Tensile Strength: Ultimate (UTS), MPa 790 to 850
680 to 750
Tensile Strength: Yield (Proof), MPa 450 to 630
370 to 640

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.4
1.4
Embodied Energy, MJ/kg 33
18
Embodied Water, L/kg 120
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
75 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
370 to 1090
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 31
24 to 27
Strength to Weight: Bending, points 25 to 26
22 to 23
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 28 to 30
22 to 24

Alloy Composition

Carbon (C), % 0.33 to 0.45
0.46 to 0.53
Chromium (Cr), % 15.5 to 17.5
0
Iron (Fe), % 77.2 to 83.4
98.5 to 98.9
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Molybdenum (Mo), % 0.8 to 1.3
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0 to 0.050