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SAE-AISI 4028 Steel vs. EN 1.0070 Steel

Both SAE-AISI 4028 steel and EN 1.0070 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 4028 steel and the bottom bar is EN 1.0070 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 190
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 23
9.1
Fatigue Strength, MPa 180 to 330
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 310 to 380
440
Tensile Strength: Ultimate (UTS), MPa 490 to 630
740
Tensile Strength: Yield (Proof), MPa 260 to 520
350

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49
53
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
7.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
1.7
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 47
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81 to 95
56
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 720
320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 22
26
Strength to Weight: Bending, points 18 to 21
23
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 16 to 20
23

Alloy Composition

Carbon (C), % 0.25 to 0.3
0
Iron (Fe), % 98.1 to 98.7
99.876 to 100
Manganese (Mn), % 0.7 to 0.9
0
Molybdenum (Mo), % 0.2 to 0.3
0
Nitrogen (N), % 0
0 to 0.014
Phosphorus (P), % 0 to 0.035
0 to 0.055
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0.035 to 0.050
0 to 0.055