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EN 1.7703 Steel vs. EN 1.8522 Steel

Both EN 1.7703 steel and EN 1.8522 steel are iron alloys. Their average alloy composition is basically identical. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 1.8522 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
220 to 380
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Tensile Strength: Ultimate (UTS), MPa 670 to 690
730 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 460
470
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
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
4.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.5
2.2
Embodied Energy, MJ/kg 35
31
Embodied Water, L/kg 61
63

Common Calculations

PREN (Pitting Resistance) 5.6
6.2
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
26 to 44
Strength to Weight: Bending, points 22
23 to 33
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 19 to 20
21 to 36

Alloy Composition

Carbon (C), % 0.11 to 0.15
0.29 to 0.36
Chromium (Cr), % 2.0 to 2.5
2.8 to 3.3
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 94.6 to 96.4
93.7 to 96
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.7
Molybdenum (Mo), % 0.9 to 1.1
0.7 to 1.2
Nickel (Ni), % 0 to 0.25
0 to 0.3
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
0.15 to 0.25

Comparable Variants