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ASTM A227 Spring Steel vs. N06920 Nickel

ASTM A227 spring steel belongs to the iron alloys classification, while N06920 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 N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 12
39
Fatigue Strength, MPa 900 to 1160
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
82
Shear Strength, MPa 1030 to 1330
500
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
730
Tensile Strength: Yield (Proof), MPa 1430 to 1850
270

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
990
Melting Completion (Liquidus), °C 1450
1500
Melting Onset (Solidus), °C 1410
1440
Specific Heat Capacity, J/kg-K 470
440
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
55
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 1.4
9.4
Embodied Energy, MJ/kg 19
130
Embodied Water, L/kg 46
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 61 to 79
24
Strength to Weight: Bending, points 41 to 48
21
Thermal Diffusivity, mm2/s 14
2.8
Thermal Shock Resistance, points 55 to 71
19

Alloy Composition

Carbon (C), % 0.45 to 0.85
0 to 0.030
Chromium (Cr), % 0
20.5 to 23
Cobalt (Co), % 0
0 to 5.0
Iron (Fe), % 97.4 to 99.1
17 to 20
Manganese (Mn), % 0.3 to 1.3
0 to 1.0
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0
36.9 to 53.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030
Tungsten (W), % 0
1.0 to 3.0