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SAE-AISI 1045 Steel vs. EN 1.4541 Stainless Steel

Both SAE-AISI 1045 steel and EN 1.4541 stainless steel are iron alloys. They have 70% 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 1045 steel and the bottom bar is EN 1.4541 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13 to 18
14 to 40
Fatigue Strength, MPa 220 to 370
190 to 330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 380 to 410
410 to 550
Tensile Strength: Ultimate (UTS), MPa 620 to 680
600 to 900
Tensile Strength: Yield (Proof), MPa 330 to 580
220 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
940
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.2
Embodied Energy, MJ/kg 18
46
Embodied Water, L/kg 46
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 93
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 900
120 to 830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 24
21 to 32
Strength to Weight: Bending, points 21 to 22
20 to 27
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 20 to 22
14 to 20

Alloy Composition

Carbon (C), % 0.43 to 0.5
0 to 0.080
Chromium (Cr), % 0
17 to 19
Iron (Fe), % 98.5 to 99
65.2 to 74
Manganese (Mn), % 0.6 to 0.9
0 to 2.0
Nickel (Ni), % 0
9.0 to 12
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.015
Titanium (Ti), % 0
0 to 0.7