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SAE-AISI 6150 Steel vs. R30556 Alloy

Both SAE-AISI 6150 steel and R30556 alloy are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 SAE-AISI 6150 steel and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 15 to 23
45
Fatigue Strength, MPa 300 to 750
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Shear Strength, MPa 400 to 730
550
Tensile Strength: Ultimate (UTS), MPa 630 to 1200
780
Tensile Strength: Yield (Proof), MPa 420 to 1160
350

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1330
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 46
11
Thermal Expansion, µm/m-K 12 to 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.0
8.7
Embodied Energy, MJ/kg 28
130
Embodied Water, L/kg 51
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
290
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3590
290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22 to 43
26
Strength to Weight: Bending, points 21 to 32
22
Thermal Diffusivity, mm2/s 13
2.9
Thermal Shock Resistance, points 20 to 38
18

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.5
Boron (B), % 0
0 to 0.020
Carbon (C), % 0.48 to 0.53
0.050 to 0.15
Chromium (Cr), % 0.8 to 1.1
21 to 23
Cobalt (Co), % 0
16 to 21
Iron (Fe), % 96.7 to 97.7
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Manganese (Mn), % 0.7 to 0.9
0.5 to 2.0
Molybdenum (Mo), % 0
2.5 to 4.0
Nickel (Ni), % 0
19 to 22.5
Niobium (Nb), % 0
0 to 0.3
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0.2 to 0.8
Sulfur (S), % 0 to 0.040
0 to 0.015
Tantalum (Ta), % 0
0.3 to 1.3
Tungsten (W), % 0
2.0 to 3.5
Vanadium (V), % 0.15 to 0.3
0
Zinc (Zn), % 0
0.0010 to 0.1