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Grade 1 Titanium vs. ASTM A232 Spring Steel

Grade 1 titanium belongs to the titanium alloys classification, while ASTM A232 spring steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is ASTM A232 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
540
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 28
14
Fatigue Strength, MPa 170
1040
Poisson's Ratio 0.32
0.29
Reduction in Area, % 36
46
Shear Modulus, GPa 39
73
Shear Strength, MPa 200
1090
Tensile Strength: Ultimate (UTS), MPa 310
1790
Tensile Strength: Yield (Proof), MPa 220
1610

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
420
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 20
52
Thermal Expansion, µm/m-K 8.8
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
2.0
Embodied Energy, MJ/kg 510
28
Embodied Water, L/kg 110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 19
64
Strength to Weight: Bending, points 23
42
Thermal Diffusivity, mm2/s 8.2
14
Thermal Shock Resistance, points 24
53

Alloy Composition

Carbon (C), % 0 to 0.080
0.48 to 0.53
Chromium (Cr), % 0
0.8 to 1.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
96.8 to 97.7
Manganese (Mn), % 0
0.7 to 0.9
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 99.095 to 100
0
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 0 to 0.4
0