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EN 1.4347 Stainless Steel vs. EN 1.7767 Steel

Both EN 1.4347 stainless steel and EN 1.7767 steel are iron alloys. They have 70% 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 1.4347 stainless steel and the bottom bar is EN 1.7767 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
20
Fatigue Strength, MPa 320
320 to 340
Impact Strength: V-Notched Charpy, J 34
46
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 660
670 to 690
Tensile Strength: Yield (Proof), MPa 480
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
480
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
4.5
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.1
2.4
Embodied Energy, MJ/kg 44
33
Embodied Water, L/kg 170
64

Common Calculations

PREN (Pitting Resistance) 28
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 570
570 to 650
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 19
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.050
0.1 to 0.15
Chromium (Cr), % 25 to 27
2.8 to 3.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 62.2 to 69.4
93.8 to 95.8
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 5.5 to 7.5
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0.1 to 0.2
0 to 0.012
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 1.5
0 to 0.15
Sulfur (S), % 0 to 0.020
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0.2 to 0.3