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SAE-AISI 4340M Steel vs. Nickel 201

SAE-AISI 4340M steel belongs to the iron alloys classification, while nickel 201 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is nickel 201.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 6.0
4.5 to 45
Fatigue Strength, MPa 690
42 to 210
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 72
70
Shear Strength, MPa 1360
270 to 380
Tensile Strength: Ultimate (UTS), MPa 2340
390 to 660
Tensile Strength: Yield (Proof), MPa 1240
80 to 510

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Mechanical, °C 430
900
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1440
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 38
78
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
19
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
19

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
65
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 1.9
11
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 55
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
25 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
17 to 720
Stiffness to Weight: Axial, points 13
11
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 84
12 to 20
Strength to Weight: Bending, points 51
13 to 19
Thermal Diffusivity, mm2/s 10
20
Thermal Shock Resistance, points 70
11 to 19

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.020
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 93.3 to 94.8
0 to 0.4
Manganese (Mn), % 0.65 to 0.9
0 to 0.35
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
99 to 100
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0 to 0.35
Sulfur (S), % 0 to 0.012
0 to 0.010
Vanadium (V), % 0.050 to 0.1
0