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SAE-AISI 1141 Steel vs. EN 1.6579 Steel

Both SAE-AISI 1141 steel and EN 1.6579 steel are iron alloys. They have a very high 96% 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 SAE-AISI 1141 steel and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 220
260 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
11 to 14
Fatigue Strength, MPa 270 to 430
380 to 570
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 740 to 810
850 to 980
Tensile Strength: Yield (Proof), MPa 400 to 700
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
3.7
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.7
Embodied Energy, MJ/kg 19
22
Embodied Water, L/kg 47
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 110
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1290
950 to 2210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 29
30 to 35
Strength to Weight: Bending, points 23 to 25
25 to 28
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 24 to 26
25 to 29

Alloy Composition

Carbon (C), % 0.37 to 0.45
0.32 to 0.38
Chromium (Cr), % 0
1.4 to 1.7
Iron (Fe), % 97.7 to 98.2
94.2 to 96.1
Manganese (Mn), % 1.4 to 1.7
0.6 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.35
Nickel (Ni), % 0
1.4 to 1.7
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0.080 to 0.13
0 to 0.030

Comparable Variants