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EN 1.7767 Steel vs. EN 1.4423 Stainless Steel

Both EN 1.7767 steel and EN 1.4423 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 32 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 1.7767 steel and the bottom bar is EN 1.4423 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 320 to 340
380
Impact Strength: V-Notched Charpy, J 46
110
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 420 to 430
520
Tensile Strength: Ultimate (UTS), MPa 670 to 690
850
Tensile Strength: Yield (Proof), MPa 460 to 500
630

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 480
780
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
16
Thermal Expansion, µm/m-K 13
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
14
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.4
3.2
Embodied Energy, MJ/kg 33
43
Embodied Water, L/kg 64
120

Common Calculations

PREN (Pitting Resistance) 6.4
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
1000
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
30
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 19 to 20
31

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.020
Chromium (Cr), % 2.8 to 3.3
11 to 13
Copper (Cu), % 0 to 0.25
0.2 to 0.8
Iron (Fe), % 93.8 to 95.8
73.8 to 80.5
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
2.3 to 2.8
Nickel (Ni), % 0 to 0.25
6.0 to 7.0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0 to 0.020
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.15
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.0030
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.2 to 0.3
0