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EN 1.4125 Stainless Steel vs. Grade 1 Titanium

EN 1.4125 stainless steel belongs to the iron alloys classification, while grade 1 titanium belongs to the titanium alloys. 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 1.4125 stainless steel and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
120
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 19
28
Fatigue Strength, MPa 300
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
39
Shear Strength, MPa 500
200
Tensile Strength: Ultimate (UTS), MPa 800
310
Tensile Strength: Yield (Proof), MPa 470
220

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 870
320
Melting Completion (Liquidus), °C 1430
1660
Melting Onset (Solidus), °C 1390
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 15
20
Thermal Expansion, µm/m-K 10
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.3
31
Embodied Energy, MJ/kg 32
510
Embodied Water, L/kg 120
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
79
Resilience: Unit (Modulus of Resilience), kJ/m3 570
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 29
19
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.1
8.2
Thermal Shock Resistance, points 29
24

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.080
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78 to 82.7
0 to 0.2
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.4 to 0.8
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
99.095 to 100
Residuals, % 0
0 to 0.4