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EN 1.7230 Steel vs. EN 1.7767 Steel

Both EN 1.7230 steel and EN 1.7767 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.7230 steel and the bottom bar is EN 1.7767 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 270
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 12
20
Fatigue Strength, MPa 320 to 460
320 to 340
Impact Strength: V-Notched Charpy, J 29 to 30
46
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 720 to 910
670 to 690
Tensile Strength: Yield (Proof), MPa 510 to 740
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
480
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 44
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
4.5
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
2.4
Embodied Energy, MJ/kg 20
33
Embodied Water, L/kg 51
64

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 97
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 1460
570 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 32
24
Strength to Weight: Bending, points 23 to 27
22
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 21 to 27
19 to 20

Alloy Composition

Carbon (C), % 0.3 to 0.37
0.1 to 0.15
Chromium (Cr), % 0.8 to 1.2
2.8 to 3.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.7 to 98.3
93.8 to 95.8
Manganese (Mn), % 0.5 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0.15 to 0.3
0.9 to 1.1
Nickel (Ni), % 0
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.025
0 to 0.015
Silicon (Si), % 0 to 0.6
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0.2 to 0.3