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SAE-AISI 4340M Steel vs. Nickel 693

SAE-AISI 4340M steel belongs to the iron alloys classification, while nickel 693 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, 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 693.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.0
34
Fatigue Strength, MPa 690
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 1360
440
Tensile Strength: Ultimate (UTS), MPa 2340
660
Tensile Strength: Yield (Proof), MPa 1240
310

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 430
1010
Melting Completion (Liquidus), °C 1440
1350
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 38
9.1
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
60
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.9
9.9
Embodied Energy, MJ/kg 26
140
Embodied Water, L/kg 55
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 84
23
Strength to Weight: Bending, points 51
21
Thermal Diffusivity, mm2/s 10
2.3
Thermal Shock Resistance, points 70
19

Alloy Composition

Aluminum (Al), % 0
2.5 to 4.0
Carbon (C), % 0.38 to 0.43
0 to 0.15
Chromium (Cr), % 0.7 to 1.0
27 to 31
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 93.3 to 94.8
2.5 to 6.0
Manganese (Mn), % 0.65 to 0.9
0 to 1.0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
53.3 to 67.5
Niobium (Nb), % 0
0.5 to 2.5
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0 to 0.5
Sulfur (S), % 0 to 0.012
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Vanadium (V), % 0.050 to 0.1
0