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EN 1.7703 Steel vs. SAE-AISI 1039 Steel

Both EN 1.7703 steel and SAE-AISI 1039 steel are iron alloys. They have a very high 96% 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 EN 1.7703 steel and the bottom bar is SAE-AISI 1039 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
14 to 18
Fatigue Strength, MPa 320 to 340
230 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 420 to 430
380 to 420
Tensile Strength: Ultimate (UTS), MPa 670 to 690
610 to 690
Tensile Strength: Yield (Proof), MPa 460 to 500
340 to 580

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 460
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.4
Embodied Energy, MJ/kg 35
18
Embodied Water, L/kg 61
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
88 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
310 to 890
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
22 to 24
Strength to Weight: Bending, points 22
20 to 22
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 19 to 20
19 to 22

Alloy Composition

Carbon (C), % 0.11 to 0.15
0.37 to 0.44
Chromium (Cr), % 2.0 to 2.5
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
98.5 to 98.9
Manganese (Mn), % 0.3 to 0.6
0.7 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0 to 0.25
0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.0050
0 to 0.050
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0