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S15700 Stainless Steel vs. Grade 37 Titanium

S15700 stainless steel belongs to the iron alloys classification, while grade 37 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 S15700 stainless steel and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 1.1 to 29
22
Fatigue Strength, MPa 370 to 770
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Shear Strength, MPa 770 to 1070
240
Tensile Strength: Ultimate (UTS), MPa 1180 to 1890
390
Tensile Strength: Yield (Proof), MPa 500 to 1770
250

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 870
310
Melting Completion (Liquidus), °C 1440
1650
Melting Onset (Solidus), °C 1400
1600
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 11
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.4
31
Embodied Energy, MJ/kg 47
500
Embodied Water, L/kg 140
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 270
76
Resilience: Unit (Modulus of Resilience), kJ/m3 640 to 4660
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 42 to 67
24
Strength to Weight: Bending, points 32 to 43
26
Thermal Diffusivity, mm2/s 4.2
8.4
Thermal Shock Resistance, points 39 to 63
29

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
1.0 to 2.0
Carbon (C), % 0 to 0.090
0 to 0.080
Chromium (Cr), % 14 to 16
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 69.6 to 76.8
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 6.5 to 7.7
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
96.9 to 99
Residuals, % 0
0 to 0.4