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R30556 Alloy vs. ASTM A182 Grade F6b

Both R30556 alloy and ASTM A182 grade F6b are iron alloys. Both are furnished in the annealed condition. They have 45% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is ASTM A182 grade F6b.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
18
Fatigue Strength, MPa 320
440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
76
Shear Strength, MPa 550
530
Tensile Strength: Ultimate (UTS), MPa 780
850
Tensile Strength: Yield (Proof), MPa 350
710

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
390
Maximum Temperature: Mechanical, °C 1100
750
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
25
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 70
8.0
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.2
Embodied Energy, MJ/kg 130
30
Embodied Water, L/kg 300
100

Common Calculations

PREN (Pitting Resistance) 40
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
140
Resilience: Unit (Modulus of Resilience), kJ/m3 290
1280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
30
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 2.9
6.7
Thermal Shock Resistance, points 18
31

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 21 to 23
11.5 to 13.5
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 20.4 to 38.2
81.2 to 87.1
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 4.0
0.4 to 0.6
Nickel (Ni), % 19 to 22.5
1.0 to 2.0
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.2 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0