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SAE-AISI A2 Steel vs. Nickel 685

SAE-AISI A2 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 (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A2 steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 710 to 2040
1250

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1450
1380
Melting Onset (Solidus), °C 1410
1330
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 38
13
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 5.5
75
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.7
10
Embodied Energy, MJ/kg 38
140
Embodied Water, L/kg 73
340

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25 to 73
42
Strength to Weight: Bending, points 23 to 46
31
Thermal Diffusivity, mm2/s 10
3.3
Thermal Shock Resistance, points 25 to 71
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), % 4.8 to 5.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 89.4 to 93.3
0 to 2.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.4
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 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Vanadium (V), % 0.15 to 0.5
0
Zinc (Zn), % 0
0.020 to 0.12