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SAE-AISI M3 Class 1 Steel vs. Nickel 685

SAE-AISI M3 class 1 steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
1250

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1610
1380
Melting Onset (Solidus), °C 1570
1330
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 26
13
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
75
Density, g/cm3 8.3
8.4
Embodied Carbon, kg CO2/kg material 10
10
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 100
340

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26 to 72
42
Strength to Weight: Bending, points 22 to 44
31
Thermal Diffusivity, mm2/s 7.2
3.3
Thermal Shock Resistance, points 24 to 67
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 1.0 to 1.1
0.030 to 0.1
Chromium (Cr), % 3.8 to 4.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 76.9 to 82.9
0 to 2.0
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 4.8 to 6.5
3.5 to 5.0
Nickel (Ni), % 0 to 0.3
49.6 to 62.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.3 to 2.8
0
Zinc (Zn), % 0
0.020 to 0.12