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EN 1.7767 Steel vs. EN 1.4931 Steel

Both EN 1.7767 steel and EN 1.4931 steel are iron alloys. They have a moderately high 90% 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 1.7767 steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 320 to 340
410
Impact Strength: V-Notched Charpy, J 46
30
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Tensile Strength: Ultimate (UTS), MPa 670 to 690
810
Tensile Strength: Yield (Proof), MPa 460 to 500
620

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 480
600
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 40
24
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
11

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
8.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.4
2.9
Embodied Energy, MJ/kg 33
42
Embodied Water, L/kg 64
100

Common Calculations

PREN (Pitting Resistance) 6.4
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
29
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 11
6.5
Thermal Shock Resistance, points 19 to 20
22

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.2 to 0.26
Chromium (Cr), % 2.8 to 3.3
11.3 to 12.2
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.8 to 95.8
83.2 to 86.8
Manganese (Mn), % 0.3 to 0.6
0.5 to 0.8
Molybdenum (Mo), % 0.9 to 1.1
1.0 to 1.2
Nickel (Ni), % 0 to 0.25
0 to 1.0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.15
0 to 0.4
Sulfur (S), % 0 to 0.0050
0 to 0.020
Titanium (Ti), % 0 to 0.030
0
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0.2 to 0.3
0.25 to 0.35