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R30556 Alloy vs. AISI 316LN Stainless Steel

Both R30556 alloy and AISI 316LN stainless steel are iron alloys. Both are furnished in the annealed condition. They have 62% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is AISI 316LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
42
Fatigue Strength, MPa 320
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
82
Shear Strength, MPa 550
410
Tensile Strength: Ultimate (UTS), MPa 780
590
Tensile Strength: Yield (Proof), MPa 350
230

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
940
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 15
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
19
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.7
3.8
Embodied Energy, MJ/kg 130
53
Embodied Water, L/kg 300
150

Common Calculations

PREN (Pitting Resistance) 40
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
200
Resilience: Unit (Modulus of Resilience), kJ/m3 290
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 2.9
4.1
Thermal Shock Resistance, points 18
13

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 0.030
Chromium (Cr), % 21 to 23
16 to 18
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
62 to 71.9
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 4.0
2.0 to 3.0
Nickel (Ni), % 19 to 22.5
10 to 14
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0.1 to 0.16
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.2 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0