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ASTM A232 Spring Steel vs. ASTM A369 Grade FP92

Both ASTM A232 spring steel and ASTM A369 grade FP92 are iron alloys. They have 89% of their average alloy composition in common. There are 30 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 ASTM A232 spring steel and the bottom bar is ASTM A369 grade FP92.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
19
Fatigue Strength, MPa 1040
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 1090
440
Tensile Strength: Ultimate (UTS), MPa 1790
710
Tensile Strength: Yield (Proof), MPa 1610
490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 420
590
Melting Completion (Liquidus), °C 1460
1490
Melting Onset (Solidus), °C 1410
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.0
2.8
Embodied Energy, MJ/kg 28
40
Embodied Water, L/kg 51
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
25
Strength to Weight: Bending, points 42
22
Thermal Diffusivity, mm2/s 14
6.9
Thermal Shock Resistance, points 53
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.48 to 0.53
0.070 to 0.13
Chromium (Cr), % 0.8 to 1.1
8.5 to 9.5
Iron (Fe), % 96.8 to 97.7
85.8 to 89.1
Manganese (Mn), % 0.7 to 0.9
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0.15 to 0.3
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010