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EN 1.4958 Stainless Steel vs. Grade M30H Nickel

EN 1.4958 stainless steel belongs to the iron alloys classification, while grade M30H nickel belongs to the nickel alloys. They have a modest 34% 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 (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4958 stainless steel and the bottom bar is grade M30H nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
160
Elongation at Break, % 40
11
Fatigue Strength, MPa 170
230
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
61
Tensile Strength: Ultimate (UTS), MPa 630
770
Tensile Strength: Yield (Proof), MPa 190
470

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1090
900
Melting Completion (Liquidus), °C 1400
1250
Melting Onset (Solidus), °C 1350
1200
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 12
22
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 30
50
Density, g/cm3 8.0
8.6
Embodied Carbon, kg CO2/kg material 5.3
7.7
Embodied Energy, MJ/kg 75
110
Embodied Water, L/kg 200
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
75
Resilience: Unit (Modulus of Resilience), kJ/m3 95
700
Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.2
5.7
Thermal Shock Resistance, points 15
27

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.3
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
27 to 33
Iron (Fe), % 41.1 to 50.6
0 to 3.5
Manganese (Mn), % 0 to 1.5
0 to 1.5
Nickel (Ni), % 30 to 32.5
57.9 to 70.3
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.7
2.7 to 3.7
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.2 to 0.5
0