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EN 1.4125 Stainless Steel vs. Grade C-6 Titanium

EN 1.4125 stainless steel belongs to the iron alloys classification, while grade C-6 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4125 stainless steel and the bottom bar is grade C-6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
290
Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 19
9.0
Fatigue Strength, MPa 300
460
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
39
Tensile Strength: Ultimate (UTS), MPa 800
890
Tensile Strength: Yield (Proof), MPa 470
830

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 870
310
Melting Completion (Liquidus), °C 1430
1580
Melting Onset (Solidus), °C 1390
1530
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
7.8
Thermal Expansion, µm/m-K 10
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
36
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.3
30
Embodied Energy, MJ/kg 32
480
Embodied Water, L/kg 120
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
78
Resilience: Unit (Modulus of Resilience), kJ/m3 570
3300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 29
55
Strength to Weight: Bending, points 25
46
Thermal Diffusivity, mm2/s 4.1
3.2
Thermal Shock Resistance, points 29
63

Alloy Composition

Aluminum (Al), % 0
4.0 to 6.0
Carbon (C), % 1.0 to 1.2
0 to 0.1
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78 to 82.7
0 to 0.5
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.4 to 0.8
0
Nickel (Ni), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0
89.7 to 94
Residuals, % 0
0 to 0.4