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EN 1.0402 Steel vs. SAE-AISI 4037 Steel

Both EN 1.0402 steel and SAE-AISI 4037 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0402 steel and the bottom bar is SAE-AISI 4037 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
23
Fatigue Strength, MPa 170
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 290
340
Tensile Strength: Ultimate (UTS), MPa 460
540
Tensile Strength: Yield (Proof), MPa 240
290

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 50
48
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
100
Resilience: Unit (Modulus of Resilience), kJ/m3 150
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
19
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 15
16

Alloy Composition

Carbon (C), % 0.17 to 0.24
0.35 to 0.4
Chromium (Cr), % 0 to 0.4
0
Iron (Fe), % 97.7 to 99.43
98 to 98.6
Manganese (Mn), % 0.4 to 0.7
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.1
0.2 to 0.3
Nickel (Ni), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0 to 0.045
0 to 0.040