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Nickel 30 vs. ASTM A231 Spring Steel

Nickel 30 belongs to the nickel alloys classification, while ASTM A231 spring steel belongs to the iron alloys. There are 29 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 nickel 30 and the bottom bar is ASTM A231 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
14
Fatigue Strength, MPa 200
1000
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 82
73
Shear Strength, MPa 440
1080
Tensile Strength: Ultimate (UTS), MPa 660
1790
Tensile Strength: Yield (Proof), MPa 270
1570

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1020
420
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 10
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 60
2.3
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 9.4
2.0
Embodied Energy, MJ/kg 130
28
Embodied Water, L/kg 290
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
64
Strength to Weight: Bending, points 20
42
Thermal Diffusivity, mm2/s 2.7
14
Thermal Shock Resistance, points 18
53

Alloy Composition

Carbon (C), % 0 to 0.030
0.48 to 0.53
Chromium (Cr), % 28 to 31.5
0.8 to 1.1
Cobalt (Co), % 0 to 5.0
0
Copper (Cu), % 1.0 to 2.4
0
Iron (Fe), % 13 to 17
96.7 to 97.7
Manganese (Mn), % 0 to 0.030
0.7 to 0.9
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 30.2 to 52.2
0
Niobium (Nb), % 0.3 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.8
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040
Tungsten (W), % 1.5 to 4.0
0
Vanadium (V), % 0
0.15 to 0.3