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EN 1.4981 Stainless Steel vs. Grade M30C Nickel

EN 1.4981 stainless steel belongs to the iron alloys classification, while grade M30C nickel belongs to the nickel alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4981 stainless steel and the bottom bar is grade M30C nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
160
Elongation at Break, % 39
29
Fatigue Strength, MPa 210
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
61
Tensile Strength: Ultimate (UTS), MPa 610
510
Tensile Strength: Yield (Proof), MPa 240
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 940
900
Melting Completion (Liquidus), °C 1440
1290
Melting Onset (Solidus), °C 1400
1240
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 16
22
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
60
Density, g/cm3 7.9
8.8
Embodied Carbon, kg CO2/kg material 4.8
9.5
Embodied Energy, MJ/kg 67
140
Embodied Water, L/kg 150
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
200
Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 21
16
Strength to Weight: Bending, points 20
16
Thermal Diffusivity, mm2/s 4.3
5.7
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.3
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
26 to 33
Iron (Fe), % 59.6 to 66.7
0 to 3.5
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 1.6 to 2.0
0
Nickel (Ni), % 15.5 to 17.5
56.6 to 72
Niobium (Nb), % 0.4 to 1.2
1.0 to 3.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.3 to 0.6
1.0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.030