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ASTM A227 Spring Steel vs. N06025 Nickel

ASTM A227 spring steel belongs to the iron alloys classification, while N06025 nickel belongs to the nickel alloys. There are 29 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 A227 spring steel and the bottom bar is N06025 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12
32
Fatigue Strength, MPa 900 to 1160
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 1030 to 1330
500
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
760
Tensile Strength: Yield (Proof), MPa 1430 to 1850
310

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
1000
Melting Completion (Liquidus), °C 1450
1350
Melting Onset (Solidus), °C 1410
1300
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
11
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
50
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.4
8.4
Embodied Energy, MJ/kg 19
120
Embodied Water, L/kg 46
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 61 to 79
26
Strength to Weight: Bending, points 41 to 48
22
Thermal Diffusivity, mm2/s 14
2.9
Thermal Shock Resistance, points 55 to 71
21

Alloy Composition

Aluminum (Al), % 0
1.8 to 2.4
Carbon (C), % 0.45 to 0.85
0.15 to 0.25
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 97.4 to 99.1
8.0 to 11
Manganese (Mn), % 0.3 to 1.3
0 to 0.15
Nickel (Ni), % 0
59.2 to 65.9
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.010
Titanium (Ti), % 0
0.1 to 0.2
Yttrium (Y), % 0
0.050 to 0.12
Zinc (Zn), % 0
0.010 to 0.1