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EN 1.7703 Steel vs. EN 1.8507 Steel

Both EN 1.7703 steel and EN 1.8507 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.7703 steel and the bottom bar is EN 1.8507 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
16
Fatigue Strength, MPa 320 to 340
440
Impact Strength: V-Notched Charpy, J 46
40
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
72
Shear Strength, MPa 420 to 430
550
Tensile Strength: Ultimate (UTS), MPa 670 to 690
900
Tensile Strength: Yield (Proof), MPa 460 to 500
670

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 460
430
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
2.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.6
Embodied Energy, MJ/kg 35
21
Embodied Water, L/kg 61
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
1210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
32
Strength to Weight: Bending, points 22
27
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 19 to 20
26

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.11 to 0.15
0.3 to 0.37
Chromium (Cr), % 2.0 to 2.5
1.0 to 1.3
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
96.1 to 97.7
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.7
Molybdenum (Mo), % 0.9 to 1.1
0.15 to 0.25
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 0.025
Silicon (Si), % 0 to 0.1
0 to 0.4
Sulfur (S), % 0 to 0.0050
0 to 0.035
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0