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ASTM A369 Grade FP21 vs. Grade M30C Nickel

ASTM A369 grade FP21 belongs to the iron alloys classification, while grade M30C nickel belongs to the nickel 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 ASTM A369 grade FP21 and the bottom bar is grade M30C nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Elongation at Break, % 20
29
Fatigue Strength, MPa 160
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
61
Tensile Strength: Ultimate (UTS), MPa 470
510
Tensile Strength: Yield (Proof), MPa 240
250

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 470
900
Melting Completion (Liquidus), °C 1470
1290
Melting Onset (Solidus), °C 1430
1240
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 41
22
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
60
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 1.8
9.5
Embodied Energy, MJ/kg 23
140
Embodied Water, L/kg 61
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
200
Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 17
16
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 11
5.7
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.3
Chromium (Cr), % 2.7 to 3.4
0
Copper (Cu), % 0
26 to 33
Iron (Fe), % 94.3 to 96.2
0 to 3.5
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.8 to 1.1
0
Nickel (Ni), % 0
56.6 to 72
Niobium (Nb), % 0
1.0 to 3.0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
1.0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.030