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SAE-AISI 4130 Steel vs. EN 1.7379 Steel

Both SAE-AISI 4130 steel and EN 1.7379 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 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 4130 steel and the bottom bar is EN 1.7379 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 300
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 13 to 26
21
Fatigue Strength, MPa 320 to 660
320
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 530 to 1040
670
Tensile Strength: Yield (Proof), MPa 440 to 980
460

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 420
460
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 43
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
3.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.8
Embodied Energy, MJ/kg 20
23
Embodied Water, L/kg 50
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 180
120
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 2550
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 37
24
Strength to Weight: Bending, points 19 to 29
22
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 16 to 31
19

Alloy Composition

Carbon (C), % 0.28 to 0.33
0.13 to 0.2
Chromium (Cr), % 0.8 to 1.1
2.0 to 2.5
Iron (Fe), % 97.3 to 98.2
94.5 to 96.5
Manganese (Mn), % 0.4 to 0.6
0.5 to 0.9
Molybdenum (Mo), % 0.15 to 0.25
0.9 to 1.2
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030