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ASTM A232 Spring Steel vs. Grade FDSiCrV Steel

Both ASTM A232 spring steel and grade FDSiCrV steel are iron alloys. Their average alloy composition is basically identical. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
630
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 46
42
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 1790
2100

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.3
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.0
1.9
Embodied Energy, MJ/kg 28
26
Embodied Water, L/kg 51
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 64
75
Strength to Weight: Bending, points 42
47
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 53
63

Alloy Composition

Carbon (C), % 0.48 to 0.53
0.5 to 0.7
Chromium (Cr), % 0.8 to 1.1
0.5 to 1.0
Copper (Cu), % 0
0 to 0.12
Iron (Fe), % 96.8 to 97.7
96 to 97.8
Manganese (Mn), % 0.7 to 0.9
0.4 to 0.9
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0.15 to 0.35
1.2 to 1.7
Sulfur (S), % 0 to 0.035
0 to 0.025
Vanadium (V), % 0.15 to 0.3
0.1 to 0.25