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ASTM B817 Type I vs. ASTM A217 Cast Steel

ASTM B817 type I belongs to the titanium alloys classification, while ASTM A217 cast steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I and the bottom bar is ASTM A217 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 4.0 to 13
21 to 27
Fatigue Strength, MPa 360 to 520
200 to 320
Poisson's Ratio 0.32
0.28 to 0.29
Reduction in Area, % 5.0 to 29
39 to 50
Shear Modulus, GPa 40
73 to 75
Tensile Strength: Ultimate (UTS), MPa 770 to 960
540 to 710
Tensile Strength: Yield (Proof), MPa 700 to 860
270 to 460

Thermal Properties

Latent Heat of Fusion, J/g 410
250 to 270
Maximum Temperature: Mechanical, °C 340
410 to 600
Melting Completion (Liquidus), °C 1600
1450 to 1460
Melting Onset (Solidus), °C 1550
1410 to 1420
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
26 to 50
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.3 to 9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.4 to 11

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.4 to 7.0
Density, g/cm3 4.4
7.8
Embodied Carbon, kg CO2/kg material 38
1.5 to 2.1
Embodied Energy, MJ/kg 610
20 to 28
Embodied Water, L/kg 200
47 to 87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
190 to 570
Stiffness to Weight: Axial, points 13
13 to 14
Stiffness to Weight: Bending, points 35
24 to 25
Strength to Weight: Axial, points 48 to 60
19 to 25
Strength to Weight: Bending, points 42 to 49
19 to 23
Thermal Diffusivity, mm2/s 2.9
6.9 to 14
Thermal Shock Resistance, points 54 to 68
16 to 20