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EN 1.7767 Steel vs. EN 1.4490 Stainless Steel

Both EN 1.7767 steel and EN 1.4490 stainless steel are iron alloys. They have 71% 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 1.7767 steel and the bottom bar is EN 1.4490 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
34
Fatigue Strength, MPa 320 to 340
210
Impact Strength: V-Notched Charpy, J 46
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 670 to 690
560
Tensile Strength: Yield (Proof), MPa 460 to 500
260

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 480
990
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.4
3.7
Embodied Energy, MJ/kg 33
52
Embodied Water, L/kg 64
150

Common Calculations

PREN (Pitting Resistance) 6.4
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
160
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
20
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 11
4.1
Thermal Shock Resistance, points 19 to 20
16

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.030
Chromium (Cr), % 2.8 to 3.3
18 to 20
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.8 to 95.8
61.7 to 70.9
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
2.0 to 2.5
Nickel (Ni), % 0 to 0.25
9.0 to 12
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0.12 to 0.2
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.15
0 to 1.5
Sulfur (S), % 0 to 0.0050
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.2 to 0.3
0